/* =========================================================
   BNI Okinawa — Ryukyu Light Dashboard
   琉球ライト Design System (white paper + sea reflections)
   ========================================================= */

/* ---------- Design tokens ---------- */
:root {
  --color-canvas:   #f7f9fc;
  --color-paper:    #ffffff;
  --color-cream:    #fbf7ee;
  --color-abyss:    #0a1929;   /* primary text */
  --color-ink:      #1f3252;   /* headings */
  --color-mist:     #64748b;   /* muted */
  --color-hair:     rgba(15, 30, 59, 0.08);
  --color-hair-strong: rgba(15, 30, 59, 0.14);

  --color-aqua:     #00a89c;   /* 琉球 turquoise (AA on white) */
  --color-aqua-lo:  #d6f4f1;
  --color-coral:    #e13757;   /* BNI + hibiscus */
  --color-coral-lo: #ffe4e8;
  --color-gold:     #d19d2f;   /* bingata gold */
  --color-gold-lo:  #fbf1d8;
  --color-sunset:   #ee6b3e;

  --shadow-glow-aqua:  0 4px 24px rgba(0,168,156,0.18), 0 1px 3px rgba(0,168,156,0.10);
  --shadow-glow-coral: 0 4px 24px rgba(225,55,87,0.18), 0 1px 3px rgba(225,55,87,0.10);
  --shadow-panel:      0 10px 40px -12px rgba(15,30,59,0.12), 0 2px 8px -4px rgba(15,30,59,0.08);
  --shadow-panel-hover:0 20px 50px -14px rgba(15,30,59,0.20), 0 4px 12px -4px rgba(15,30,59,0.10);
  --panel-inner-top:   inset 0 1px 0 rgba(255,255,255,0.9);

  --font-display: 'Shippori Mincho', 'Yu Mincho', 'Hiragino Mincho ProN', serif;
  --font-body:    'Noto Sans JP', system-ui, -apple-system, "Segoe UI", "Hiragino Sans", sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --radius-sm: 6px;
  --radius:    12px;
  --radius-lg: 20px;
  --radius-panel: 16px;

  --ease-elastic: cubic-bezier(0.22, 1, 0.36, 1);

  --tab-x: 0px;
  --tab-w: 0px;
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }

html, body {
  min-height: 100vh;
}

body {
  margin: 0;
  color: var(--color-abyss);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  background: var(--color-canvas);
  overflow-x: hidden;
  position: relative;
}

::selection { background: rgba(0,168,156,0.20); color: var(--color-abyss); }

a { color: var(--color-aqua); text-decoration: none; }

/* ---------- Decorative overlays ---------- */
.scanline { display: none; } /* removed on light theme */

.grain {
  position: fixed; inset: 0; pointer-events: none; z-index: 2;
  opacity: 0.025;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 1 0'/></filter><rect width='160' height='160' filter='url(%23n)'/></svg>");
}

.aurora {
  position: fixed; inset: -25% -25% -25% -25%;
  z-index: -1; pointer-events: none;
  filter: blur(160px);
  opacity: 1;
}
.aurora__blob {
  position: absolute; width: 46vmax; height: 46vmax;
  border-radius: 50%; mix-blend-mode: multiply;
  will-change: transform;
}
.aurora__blob--a { background: radial-gradient(circle at 30% 30%, rgba(0,168,156,0.16), transparent 60%); top: -12%; left: -6%; animation: drift-a 52s ease-in-out infinite; }
.aurora__blob--b { background: radial-gradient(circle at 70% 30%, rgba(225,55,87,0.14), transparent 60%); top: 18%; right: -12%; animation: drift-b 58s ease-in-out infinite; }
.aurora__blob--c { background: radial-gradient(circle at 50% 70%, rgba(209,157,47,0.13), transparent 60%); bottom: -22%; left: 22%; animation: drift-c 64s ease-in-out infinite; }

@keyframes drift-a {
  0%,100% { transform: translate(0,0) rotate(0deg) scale(1); }
  33%     { transform: translate(22vw,14vh) rotate(28deg) scale(1.12); }
  66%     { transform: translate(-18vw,20vh) rotate(-14deg) scale(1.05); }
}
@keyframes drift-b {
  0%,100% { transform: translate(0,0) rotate(0deg) scale(1); }
  33%     { transform: translate(-24vw,16vh) rotate(-22deg) scale(1.15); }
  66%     { transform: translate(18vw,-12vh) rotate(18deg) scale(1.02); }
}
@keyframes drift-c {
  0%,100% { transform: translate(0,0) rotate(0deg) scale(1); }
  33%     { transform: translate(20vw,-18vh) rotate(24deg) scale(0.90); }
  66%     { transform: translate(-16vw,10vh) rotate(-16deg) scale(1.10); }
}

/* ---------- Okinawan motif layers ---------- */
/* 1. 青海波 (Seigaiha) — fixed full-page fish-scale wave pattern */
.seigaiha {
  position: fixed; inset: -10vh -5vw;
  z-index: -1; pointer-events: none;
  opacity: 0.06;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='80' height='40' viewBox='0 0 80 40'><g fill='none' stroke='%2300a89c' stroke-width='1'><path d='M0 40 A20 20 0 0 1 40 40 M40 40 A20 20 0 0 1 80 40'/><path d='M0 40 A14 14 0 0 1 40 40 M40 40 A14 14 0 0 1 80 40'/><path d='M0 40 A8 8 0 0 1 40 40 M40 40 A8 8 0 0 1 80 40'/><path d='M-40 40 A20 20 0 0 1 0 40 M80 40 A20 20 0 0 1 120 40'/></g></svg>");
  background-repeat: repeat;
  background-size: 80px 40px;
  animation: seigaiha-drift 42s linear infinite;
  will-change: background-position;
}
@keyframes seigaiha-drift {
  0%   { background-position: 0 0; }
  100% { background-position: 160px 80px; }
}

/* 2. 紅型 (Bingata) tint bands — top & bottom */
.bingata-band {
  position: fixed; left: 0; right: 0;
  height: 42px;
  z-index: 0; pointer-events: none;
  opacity: 0.14;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='42' viewBox='0 0 120 42'><g fill='none'><g transform='translate(15 21)'><g fill='%23e13757' opacity='0.85'><ellipse cx='0' cy='-6' rx='3' ry='5'/><ellipse cx='5.7' cy='-1.8' rx='3' ry='5' transform='rotate(72 5.7 -1.8)'/><ellipse cx='3.5' cy='4.9' rx='3' ry='5' transform='rotate(144 3.5 4.9)'/><ellipse cx='-3.5' cy='4.9' rx='3' ry='5' transform='rotate(216 -3.5 4.9)'/><ellipse cx='-5.7' cy='-1.8' rx='3' ry='5' transform='rotate(288 -5.7 -1.8)'/><circle cx='0' cy='0' r='1.6' fill='%23d19d2f'/></g></g><path d='M42 21 L48 27 L54 21 L48 15 Z' fill='%2300a89c' opacity='0.7'/><path d='M66 8 Q72 2 78 8 T90 8' stroke='%2300a89c' stroke-width='1.2' fill='none' opacity='0.6'/><path d='M66 34 Q72 28 78 34 T90 34' stroke='%2300a89c' stroke-width='1.2' fill='none' opacity='0.6'/><circle cx='102' cy='12' r='1.6' fill='%23d19d2f'/><circle cx='108' cy='30' r='1.6' fill='%23d19d2f'/><path d='M100 22 L104 26 L108 22 L104 18 Z' fill='%23ee6b3e' opacity='0.65'/></g></svg>");
  background-repeat: repeat-x;
  background-size: 120px 42px;
  animation: bingata-slide 60s linear infinite;
  will-change: background-position;
}
.bingata-band--top {
  top: 0;
  mask-image: linear-gradient(180deg, #000 0%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 100%);
}
.bingata-band--bottom {
  bottom: 0;
  mask-image: linear-gradient(0deg, #000 0%, transparent 100%);
  -webkit-mask-image: linear-gradient(0deg, #000 0%, transparent 100%);
  animation-direction: reverse;
}
@keyframes bingata-slide {
  0%   { background-position: 0 0; }
  100% { background-position: 240px 0; }
}

/* 3. Animated ocean waves — three stacked layers, bottom of viewport */
.waves {
  position: fixed; left: 0; right: 0; bottom: 0;
  height: 140px;
  z-index: 0; pointer-events: none;
  overflow: hidden;
}
.waves__layer {
  position: absolute; left: -50%; right: -50%; bottom: 0;
  width: 200%; height: 120px;
  background-repeat: repeat-x;
  background-size: 1440px 120px;
  will-change: transform;
}
.waves__layer--back {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 120' preserveAspectRatio='none'><path d='M0 70 Q 180 20 360 70 T 720 70 T 1080 70 T 1440 70 V120 H0 Z' fill='%2300a89c' fill-opacity='0.08'/></svg>");
  animation: wave-drift 40s linear infinite;
  opacity: 0.9;
}
.waves__layer--mid {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 120' preserveAspectRatio='none'><path d='M0 78 Q 200 30 400 78 T 800 78 T 1200 78 T 1440 78 V120 H0 Z' fill='%2300a89c' fill-opacity='0.14'/></svg>");
  animation: wave-drift-reverse 32s linear infinite;
  bottom: -6px;
}
.waves__layer--front {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 120' preserveAspectRatio='none'><path d='M0 84 Q 160 46 320 84 T 640 84 T 960 84 T 1280 84 T 1440 84 V120 H0 Z' fill='%2300a89c' fill-opacity='0.20'/></svg>");
  animation: wave-drift 24s linear infinite;
  bottom: -14px;
}
@keyframes wave-drift {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-720px); }
}
@keyframes wave-drift-reverse {
  0%   { transform: translateX(-720px); }
  100% { transform: translateX(0); }
}

/* 4. Sea life — drifting Okinawan reef creatures viewed from above */
.sealife {
  position: fixed; inset: 0;
  z-index: 1; pointer-events: none;
  overflow: hidden;
}
.creature {
  position: absolute;
  opacity: 0;
  will-change: transform, opacity;
}
.creature svg { width: 100%; height: 100%; display: block; overflow: visible; }

/* Whale shark — the icon of Okinawa, slow majestic pass */
.creature--whaleshark {
  width: 320px; height: 110px;
  top: 34%;
  animation: swim-lr 78s linear infinite;
  animation-delay: -22s;
}
.creature--whaleshark .body  { fill: var(--color-ink);  opacity: 0.60; }
.creature--whaleshark .fin   { fill: var(--color-ink);  opacity: 0.55; }
.creature--whaleshark .spot  { fill: var(--color-aqua); opacity: 0.85; }

/* Sea turtle — diagonal glide */
.creature--turtle {
  width: 92px; height: 68px;
  top: 55%;
  animation: swim-diag 52s linear infinite;
  animation-delay: -9s;
}
.creature--turtle .shell   { fill: var(--color-gold); opacity: 0.90; }
.creature--turtle .pattern { fill: none; stroke: var(--color-ink); stroke-width: 0.9; opacity: 0.40; }
.creature--turtle .flipper { fill: var(--color-gold); opacity: 0.80; }
.creature--turtle .head    { fill: var(--color-gold); opacity: 0.85; }

/* Manta ray — undulating wings, opposite direction */
.creature--manta {
  width: 190px; height: 120px;
  top: 66%;
  animation: swim-rl 92s linear infinite;
  animation-delay: -34s;
}
.creature--manta .wing  { fill: var(--color-ink); opacity: 0.55;
  transform-origin: 50% 50%; animation: manta-flap 3.6s ease-in-out infinite; }
.creature--manta .belly { fill: var(--color-paper); opacity: 0.40; }
.creature--manta .tail  { fill: var(--color-ink); opacity: 0.45; }

/* Jellyfish — rising, pulsing, gently swaying */
.creature--jellyfish { width: 54px; height: 96px; }
.creature--jellyfish .bell { fill: var(--color-aqua); opacity: 0.85;
  transform-origin: 50% 45%; animation: jelly-pulse 4s ease-in-out infinite; }
.creature--jellyfish .tent { fill: none; stroke: var(--color-aqua); stroke-width: 1.2; opacity: 0.55; }
.creature--jellyfish--a { left: 18%; animation: jelly-rise 38s linear infinite; }
.creature--jellyfish--b {
  left: 76%; width: 46px; height: 82px;
  animation: jelly-rise 46s linear infinite; animation-delay: -19s;
}

/* Octopus — jet-propulsion drift */
.creature--octopus {
  width: 90px; height: 108px;
  top: 48%;
  animation: swim-lr 62s linear infinite;
  animation-delay: -14s;
}
.creature--octopus .mantle { fill: var(--color-coral); opacity: 0.80;
  transform-origin: 50% 40%; animation: octo-jet 6s ease-in-out infinite; }
.creature--octopus .arm { fill: none; stroke: var(--color-coral); stroke-width: 4; stroke-linecap: round; opacity: 0.70; }
.creature--octopus .eye { fill: var(--color-canvas); opacity: 0.95; }

/* Clownfish — quick playful darts */
.creature--clownfish { width: 40px; height: 24px; }
.creature--clownfish .body { fill: var(--color-sunset); opacity: 0.95; }
.creature--clownfish .fin  { fill: var(--color-sunset); opacity: 0.80; }
.creature--clownfish .band { fill: none; stroke: var(--color-canvas); stroke-width: 1.6; opacity: 0.90; }
.creature--clownfish--a { top: 26%; animation: dart-lr 24s linear infinite; }
.creature--clownfish--b { top: 62%; animation: dart-rl 27s linear infinite; animation-delay: -11s; }

/* Fish school — a cluster of tiny tropicals */
.creature--fishschool { width: 150px; height: 44px; }
.creature--fishschool .f-a { fill: var(--color-aqua);   opacity: 0.85; }
.creature--fishschool .f-b { fill: var(--color-gold);   opacity: 0.85; }
.creature--fishschool .f-c { fill: var(--color-coral);  opacity: 0.85; }
.creature--fishschool--a { top: 24%; animation: school-lr 42s linear infinite; animation-delay: -7s; }
.creature--fishschool--b { top: 58%; animation: school-rl 36s linear infinite; animation-delay: -21s; }

/* Garden eels — fixed at the bottom, wobbling in place */
.creature--gardeneel {
  bottom: 6vh; width: 14px; height: 62px;
  transform-origin: 50% 100%;
}
.creature--gardeneel .body { fill: var(--color-ink); opacity: 0.60; }
.creature--gardeneel .dot  { fill: var(--color-canvas); opacity: 0.95; }
.creature--gardeneel--a { left: 14%; opacity: 0.24; animation: eel-wobble 3.6s ease-in-out infinite; }
.creature--gardeneel--b { left: 82%; opacity: 0.22; animation: eel-wobble 4.2s ease-in-out infinite; animation-delay: -1.6s; }

@keyframes swim-lr {
  0%   { transform: translate(-26vw, 0);            opacity: 0; }
  8%   {                                             opacity: 0.15; }
  25%  { transform: translate(15vw, -6px);           opacity: 0.16; }
  50%  { transform: translate(50vw, 4px);            opacity: 0.16; }
  75%  { transform: translate(85vw, -8px);           opacity: 0.15; }
  92%  {                                             opacity: 0.14; }
  100% { transform: translate(126vw, 0);             opacity: 0; }
}
@keyframes swim-rl {
  0%   { transform: translate(126vw, 0);             opacity: 0; }
  8%   {                                             opacity: 0.13; }
  25%  { transform: translate(85vw, 6px);            opacity: 0.14; }
  50%  { transform: translate(50vw, -4px);           opacity: 0.14; }
  75%  { transform: translate(15vw, 8px);            opacity: 0.13; }
  92%  {                                             opacity: 0.12; }
  100% { transform: translate(-26vw, 0);             opacity: 0; }
}
@keyframes swim-diag {
  0%   { transform: translate(-18vw, 6vh) rotate(-3deg); opacity: 0; }
  10%  { opacity: 0.22; }
  50%  { transform: translate(52vw, -4vh) rotate(4deg);  opacity: 0.24; }
  90%  { opacity: 0.22; }
  100% { transform: translate(122vw, -6vh) rotate(-2deg); opacity: 0; }
}
@keyframes jelly-rise {
  0%   { transform: translate(0, 108vh);   opacity: 0; }
  10%  { opacity: 0.20; }
  50%  { transform: translate(22px, 48vh); opacity: 0.22; }
  90%  { opacity: 0.18; }
  100% { transform: translate(-16px, -25vh); opacity: 0; }
}
@keyframes jelly-pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.15); }
}
@keyframes manta-flap {
  0%, 100% { transform: scaleY(0.95); }
  50%      { transform: scaleY(1.06); }
}
@keyframes octo-jet {
  0%, 100% { transform: scaleY(1)    translateY(0); }
  40%      { transform: scaleY(0.86) translateY(-3px); }
  60%      { transform: scaleY(1.10) translateY(2px); }
}
@keyframes dart-lr {
  0%   { transform: translate(-12vw, 0);          opacity: 0; }
  6%   { opacity: 0.30; }
  25%  { transform: translate(20vw, -18px); }
  50%  { transform: translate(52vw, 14px); }
  75%  { transform: translate(82vw, -14px); }
  94%  { opacity: 0.30; }
  100% { transform: translate(116vw, 0);          opacity: 0; }
}
@keyframes dart-rl {
  0%   { transform: translate(116vw, 0) scaleX(-1);   opacity: 0; }
  6%   { opacity: 0.30; }
  25%  { transform: translate(82vw, 14px) scaleX(-1); }
  50%  { transform: translate(50vw, -16px) scaleX(-1); }
  75%  { transform: translate(20vw, 12px) scaleX(-1); }
  94%  { opacity: 0.30; }
  100% { transform: translate(-12vw, 0) scaleX(-1);   opacity: 0; }
}
@keyframes school-lr {
  0%   { transform: translate(-22vw, 0);          opacity: 0; }
  8%   { opacity: 0.32; }
  25%  { transform: translate(20vw, -12px); }
  50%  { transform: translate(50vw, 10px); }
  75%  { transform: translate(82vw, -8px); }
  92%  { opacity: 0.32; }
  100% { transform: translate(122vw, 0);          opacity: 0; }
}
@keyframes school-rl {
  0%   { transform: translate(122vw, 0) scaleX(-1);   opacity: 0; }
  8%   { opacity: 0.32; }
  25%  { transform: translate(82vw, 12px) scaleX(-1); }
  50%  { transform: translate(50vw, -10px) scaleX(-1); }
  75%  { transform: translate(20vw, 10px) scaleX(-1); }
  92%  { opacity: 0.32; }
  100% { transform: translate(-22vw, 0) scaleX(-1);   opacity: 0; }
}
@keyframes eel-wobble {
  0%, 100% { transform: rotate(-9deg); }
  50%      { transform: rotate(9deg); }
}

/* 5. Coral silhouettes in bottom corners */
.coral-silhouette {
  position: fixed; bottom: 0;
  z-index: 0; pointer-events: none;
  opacity: 0.12;
  width: 220px; height: 200px;
  color: var(--color-sunset);
}
.coral-silhouette svg { width: 100%; height: 100%; display: block; }
.coral-silhouette--left  { left: -20px; animation: coral-sway 9s ease-in-out infinite; transform-origin: 50% 100%; }
.coral-silhouette--right { right: -20px; transform: scaleX(-1); animation: coral-sway-r 11s ease-in-out infinite; transform-origin: 50% 100%; }
.coral-silhouette--center {
  left: calc(50% - 60px);
  width: 120px; height: 110px;
  opacity: 0.10;
  color: var(--color-coral);
  animation: coral-sway 12s ease-in-out infinite;
  transform-origin: 50% 100%;
}
@keyframes coral-sway {
  0%,100% { transform: rotate(-1.5deg); }
  50%     { transform: rotate(1.5deg); }
}
@keyframes coral-sway-r {
  0%,100% { transform: scaleX(-1) rotate(-1.5deg); }
  50%     { transform: scaleX(-1) rotate(1.5deg); }
}

/* 6. Sun rays — diagonal shafts sweeping */
.rays {
  position: fixed; inset: 0;
  z-index: 0; pointer-events: none;
  overflow: hidden;
  mix-blend-mode: soft-light;
}
.ray {
  position: absolute;
  top: -20vh; left: -30vw;
  width: 40vw; height: 160vh;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(255,255,255,0.55) 45%,
    rgba(255,240,200,0.55) 55%,
    transparent 100%);
  transform: rotate(18deg);
  opacity: 0;
  will-change: transform, opacity;
}
.ray--a { animation: ray-sweep 22s ease-in-out infinite; animation-delay: 2s; }
.ray--b { animation: ray-sweep 28s ease-in-out infinite; animation-delay: 13s; top: -10vh; }
@keyframes ray-sweep {
  0%   { transform: translate(-30vw, -20vh) rotate(18deg); opacity: 0; }
  20%  { opacity: 0.35; }
  50%  { opacity: 0.30; }
  80%  { opacity: 0.30; }
  100% { transform: translate(140vw, 60vh) rotate(18deg); opacity: 0; }
}

/* 7. Ambient sparkles */
.sparkles {
  position: fixed; inset: 0;
  z-index: 1; pointer-events: none;
}
.sparkle {
  position: absolute;
  width: 3px; height: 3px;
  border-radius: 50%;
  background: radial-gradient(circle, #ffffff 0%, rgba(0,168,156,0.8) 55%, transparent 100%);
  opacity: 0;
  box-shadow: 0 0 8px rgba(0,168,156,0.55);
}
.sparkle:nth-child(1) { top: 12%; left: 18%; animation: twinkle 4s ease-in-out  1s infinite; }
.sparkle:nth-child(2) { top: 22%; left: 72%; animation: twinkle 5s ease-in-out  6s infinite; }
.sparkle:nth-child(3) { top: 38%; left: 42%; animation: twinkle 3.5s ease-in-out 11s infinite; }
.sparkle:nth-child(4) { top: 55%; left: 88%; animation: twinkle 4.2s ease-in-out 17s infinite; }
.sparkle:nth-child(5) { top: 68%; left: 12%; animation: twinkle 3.8s ease-in-out 22s infinite; }
.sparkle:nth-child(6) { top: 78%; left: 62%; animation: twinkle 4.6s ease-in-out  3s infinite; }
.sparkle:nth-child(7) { top: 88%; left: 30%; animation: twinkle 3.2s ease-in-out 14s infinite; }
.sparkle:nth-child(8) { top: 30%; left: 90%; animation: twinkle 5.2s ease-in-out 26s infinite; }
@keyframes twinkle {
  0%, 90%, 100% { opacity: 0; transform: scale(0.6); }
  45%           { opacity: 0.95; transform: scale(1.4); }
}

/* ---------- Layout wrapper ---------- */
.hero, nav.tabs, .controls, main, .footer, #app {
  position: relative; z-index: 3;
}
body.admin-page header { position: relative; z-index: 3; }

/* ---------- Hero ---------- */
.hero {
  padding: 40px clamp(20px, 5vw, 56px) 22px;
  display: grid;
  gap: 14px;
  animation: fade-up 800ms var(--ease-elastic) 950ms both;
  position: relative;
}
.hero::before {
  /* Subtle Okinawan sea-line motif (softened; bottom waves carry the main sea vibe) */
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 120px;
  pointer-events: none;
  opacity: 0.35;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='1600' height='120' viewBox='0 0 1600 120' preserveAspectRatio='none'><g fill='none' stroke='%2300a89c' stroke-width='1' stroke-linecap='round' opacity='0.28'><path d='M0 30 Q 80 10 160 30 T 320 30 T 480 30 T 640 30 T 800 30 T 960 30 T 1120 30 T 1280 30 T 1440 30 T 1600 30'/><path d='M0 60 Q 80 40 160 60 T 320 60 T 480 60 T 640 60 T 800 60 T 960 60 T 1120 60 T 1280 60 T 1440 60 T 1600 60' opacity='0.7'/><path d='M0 90 Q 80 70 160 90 T 320 90 T 480 90 T 640 90 T 800 90 T 960 90 T 1120 90 T 1280 90 T 1440 90 T 1600 90' opacity='0.45'/></g></svg>");
  background-repeat: no-repeat;
  background-size: 100% 120px;
  mask-image: linear-gradient(180deg, #000 0%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 100%);
  z-index: -1;
}
.hero__brand {
  display: flex; align-items: center; gap: 12px;
  animation: eyebrow-slide 800ms var(--ease-elastic) 150ms both;
}
.hero__mark {
  color: var(--color-aqua);
  font-size: 22px; line-height: 1;
  display: inline-block;
  animation: mark-drop 900ms var(--ease-elastic) 0ms both,
             pulse-mark 2.5s ease-in-out 1s infinite;
}
.hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-mist);
}
.hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.2rem, 5.5vw, 4.6rem);
  line-height: 1.05;
  display: flex; flex-direction: column; gap: 4px;
}
.hero__title-jp {
  color: var(--color-abyss);
  text-shadow: 0 1px 0 rgba(255,255,255,0.6);
  letter-spacing: 0.02em;
  animation: title-stretch 900ms var(--ease-elastic) 300ms both;
}
.hero__title-en {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(0.75rem, 1.4vw, 1rem);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--color-aqua);
  padding-top: 6px;
  position: relative;
  width: fit-content;
  padding-bottom: 6px;
  animation: en-tighten 850ms var(--ease-elastic) 500ms both;
}
.hero__title-en::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
  background: linear-gradient(90deg, var(--color-aqua), var(--color-coral));
  border-radius: 2px;
  animation: underline-draw 900ms var(--ease-elastic) 650ms both,
             pulse-underline 3.6s ease-in-out 1.5s infinite;
  transform-origin: left center;
}
.hero__meta {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  animation: fade-up 700ms var(--ease-elastic) 800ms both;
}
.hero__timestamp {
  animation: pill-bounce 800ms var(--ease-elastic) 800ms both;
}
.hero__timestamp {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-aqua);
  letter-spacing: 0.05em;
  padding: 6px 14px;
  border: 1px solid rgba(0,168,156,0.22);
  border-radius: 999px;
  background: var(--color-aqua-lo);
}
.hero__timestamp::before {
  content: "●";
  color: var(--color-aqua);
  margin-right: 8px;
  animation: pulse-mark 2s ease-in-out infinite;
}

/* ---------- Buttons ---------- */
.btn, .btn-admin, .btn-primary, .btn-danger {
  --btn-fg: var(--color-aqua);
  --btn-bg: var(--color-paper);
  --btn-bd: var(--color-aqua);
  --btn-glow: 0 1px 2px rgba(15,30,59,0.06);
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 18px;
  font-family: var(--font-body);
  font-size: 13px; font-weight: 600;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1px solid var(--btn-bd);
  border-radius: 999px;
  cursor: pointer;
  transition: transform 220ms var(--ease-elastic),
              box-shadow 220ms ease,
              border-color 220ms ease,
              background 220ms ease,
              color 220ms ease;
  text-decoration: none;
  box-shadow: var(--btn-glow);
  letter-spacing: 0.03em;
}
.btn:hover, .btn-admin:hover, .btn-primary:hover, .btn-danger:hover {
  transform: translateY(-1px);
  background: var(--color-aqua-lo);
  box-shadow: var(--shadow-glow-aqua);
}
.btn:active { transform: translateY(0); }
.btn__glyph { color: var(--color-aqua); font-family: var(--font-mono); }

.btn--ghost { background: var(--color-paper); }
.btn--primary, .btn-primary {
  --btn-bg: var(--color-coral);
  --btn-bd: var(--color-coral);
  --btn-fg: #ffffff;
  --btn-glow: var(--shadow-glow-coral);
  font-weight: 700;
}
.btn--primary .btn__glyph, .btn-primary .btn__glyph { color: #fff; }
.btn--primary, .btn-primary { position: relative; overflow: hidden; }
.btn--primary::before, .btn-primary::before {
  content: "";
  position: absolute; top: 0; bottom: 0; left: -60%;
  width: 40%;
  background: linear-gradient(120deg,
    transparent 0%,
    rgba(255,255,255,0.35) 50%,
    transparent 100%);
  transform: skewX(-18deg);
  pointer-events: none;
  transition: transform 700ms ease;
}
.btn--primary:hover::before, .btn-primary:hover::before {
  transform: skewX(-18deg) translateX(360%);
}
.btn--primary:hover, .btn-primary:hover {
  background: #c92c4b;
  border-color: #c92c4b;
  color: #ffffff;
  box-shadow: 0 6px 26px rgba(225,55,87,0.30), 0 2px 6px rgba(225,55,87,0.18);
}
.btn--danger, .btn-danger {
  --btn-bg: var(--color-coral-lo);
  --btn-bd: rgba(225,55,87,0.5);
  --btn-fg: var(--color-coral);
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 600;
}
.btn--danger:hover, .btn-danger:hover {
  --btn-fg: #ffffff;
  background: var(--color-coral);
  border-color: var(--color-coral);
  box-shadow: var(--shadow-glow-coral);
}

/* ---------- Tabs (segmented) ---------- */
nav.tabs {
  position: relative;
  display: flex; gap: 4px;
  padding: 8px;
  margin: 8px clamp(20px, 5vw, 56px) 4px;
  background: var(--color-paper);
  border: 1px solid var(--color-hair);
  border-radius: 999px;
  box-shadow: var(--panel-inner-top), var(--shadow-panel);
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(0,168,156,0.35) transparent;
  animation: fade-up 750ms var(--ease-elastic) 1100ms both;
}
nav.tabs::-webkit-scrollbar { height: 4px; }
nav.tabs::-webkit-scrollbar-thumb { background: rgba(0,168,156,0.35); border-radius: 2px; }

.tab {
  position: relative;
  padding: 9px 18px 12px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-mist);
  background: transparent;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex; align-items: center; gap: 8px;
  transition: color 220ms ease, transform 220ms var(--ease-elastic);
  z-index: 1;
}
.tab__num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--color-aqua);
  opacity: 0.6;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--color-aqua-lo);
  transition: color 220ms ease, background 220ms ease, opacity 220ms ease;
}
.tab:hover { color: var(--color-ink); }
.tab.active {
  color: var(--color-coral);
}
.tab.active .tab__num {
  color: var(--color-coral);
  background: var(--color-coral-lo);
  opacity: 1;
}
.tab__indicator {
  position: absolute;
  left: var(--tab-x);
  width: var(--tab-w);
  bottom: 4px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-aqua), var(--color-coral));
  border-radius: 2px;
  box-shadow: 0 2px 8px rgba(0,168,156,0.32);
  transition: left 520ms cubic-bezier(0.34, 1.56, 0.64, 1),
              width 520ms cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
  z-index: 0;
  opacity: 0;
}

/* Tab ripple */
.tab { overflow: hidden; }
.tab .tab__ripple {
  position: absolute;
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0);
  background: radial-gradient(circle, rgba(0,168,156,0.35) 0%, rgba(0,168,156,0) 70%);
  width: 200px; height: 200px;
  pointer-events: none;
  animation: ripple-spread 550ms ease-out forwards;
  z-index: 0;
}
@keyframes ripple-spread {
  0%   { transform: translate(-50%,-50%) scale(0); opacity: 0.75; }
  100% { transform: translate(-50%,-50%) scale(1.4); opacity: 0; }
}
.tab__indicator.ready { opacity: 1; }

/* ---------- Controls (selects) ---------- */
.controls {
  display: flex; gap: 14px; flex-wrap: wrap;
  padding: 18px clamp(20px, 5vw, 56px) 8px;
  animation: fade-up 700ms var(--ease-elastic) 1250ms both;
}
.controls label {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-mist);
}
.controls select,
select {
  appearance: none; -webkit-appearance: none;
  padding: 8px 34px 8px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-ink);
  background: var(--color-paper);
  border: 1px solid var(--color-hair-strong);
  border-radius: 8px;
  cursor: pointer;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'><path d='M2 4l4 4 4-4' fill='none' stroke='%2300a89c' stroke-width='1.6'/></svg>");
  background-repeat: no-repeat;
  background-position: right 12px center;
  transition: border-color 200ms ease, box-shadow 200ms ease;
}
select:hover { border-color: rgba(0,168,156,0.55); }
select:focus {
  outline: none;
  border-color: var(--color-aqua);
  box-shadow: 0 0 0 3px rgba(0,168,156,0.18);
}
select option {
  background: var(--color-paper);
  color: var(--color-ink);
}

input[type="text"], input[type="password"], input[type="number"], input[type="date"] {
  padding: 9px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-ink);
  background: var(--color-paper);
  border: 1px solid var(--color-hair-strong);
  border-radius: 8px;
  caret-color: var(--color-aqua);
  transition: border-color 200ms ease, box-shadow 200ms ease, background 200ms ease;
}
input:focus {
  outline: none;
  border-color: var(--color-aqua);
  box-shadow: 0 0 0 3px rgba(0,168,156,0.18);
}
input::placeholder { color: rgba(100,116,139,0.55); }

/* ---------- Stage frame (chart) ---------- */
main { padding: 8px clamp(20px, 5vw, 56px) 40px; }
.stage {
  animation: fade-up 800ms var(--ease-elastic) 1350ms both;
  perspective: 1200px;
}
.stage__frame {
  position: relative;
  padding: 28px;
  background: var(--color-paper);
  border: 1px solid var(--color-hair);
  border-radius: var(--radius-panel);
  box-shadow: var(--panel-inner-top), var(--shadow-panel);
  min-height: 420px;
  transition: box-shadow 320ms ease, transform 520ms var(--ease-elastic);
  transform-style: preserve-3d;
  will-change: transform;
}
.stage__frame:hover {
  box-shadow: var(--panel-inner-top), var(--shadow-panel-hover);
}
.stage__corners { position: absolute; inset: 0; pointer-events: none; }
.stage__corners > i {
  position: absolute; width: 18px; height: 18px;
  border: 1.5px solid var(--color-aqua);
  opacity: 0.6;
}
.stage__corners > i:nth-child(1) { top: -1px; left: -1px; border-right: none; border-bottom: none; border-top-left-radius: 6px; }
.stage__corners > i:nth-child(2) { top: -1px; right: -1px; border-left: none; border-bottom: none; border-top-right-radius: 6px; }
.stage__corners > i:nth-child(3) { bottom: -1px; left: -1px; border-right: none; border-top: none; border-bottom-left-radius: 6px; }
.stage__corners > i:nth-child(4) { bottom: -1px; right: -1px; border-left: none; border-top: none; border-bottom-right-radius: 6px; }

#chart {
  width: 100% !important;
  max-height: 560px;
  animation: chart-in 900ms var(--ease-elastic) both;
}

/* ---------- Heatmap ---------- */
#heatmap { overflow-x: auto; }
#heatmap table {
  border-collapse: separate;
  border-spacing: 4px;
  width: 100%;
}
#heatmap th {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-mist);
  padding: 6px 8px;
  background: transparent;
  border: none;
  text-align: left;
  font-weight: 500;
}
#heatmap tbody th {
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 12px;
  text-transform: none;
  letter-spacing: 0;
  white-space: nowrap;
  font-weight: 600;
}
#heatmap td {
  width: 42px; height: 42px;
  min-width: 42px;
  padding: 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--color-abyss);
  border-radius: 6px;
  border: 1px solid var(--color-hair);
  transition: transform 200ms var(--ease-elastic), box-shadow 200ms ease;
  cursor: default;
}
#heatmap td:hover {
  transform: scale(1.15);
  z-index: 2;
  position: relative;
}

/* ---------- Footer ---------- */
.footer {
  padding: 22px clamp(20px, 5vw, 56px);
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-mist);
  border-top: 1px solid var(--color-hair);
  background: linear-gradient(180deg, transparent, rgba(255,255,255,0.6));
}
.footer__section {
  display: inline-flex; align-items: center; gap: 10px;
}
.footer__mark { color: var(--color-aqua); font-size: 14px; }
.footer__credit-label {
  color: var(--color-mist);
  font-size: 10px;
  letter-spacing: 0.22em;
}
.footer__credit-link {
  position: relative;
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: none;
  color: var(--color-aqua);
  padding: 4px 2px;
  transition: color 220ms ease;
}
.footer__credit-link::after {
  content: "";
  position: absolute;
  left: 22px; right: 0; bottom: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 320ms var(--ease-elastic);
}
.footer__credit-link:hover { color: var(--color-coral); }
.footer__credit-link:hover::after { transform: scaleX(1); }
.footer__credit-mark {
  display: inline-block;
  transform: rotate(45deg);
  transition: transform 380ms var(--ease-elastic), color 220ms ease;
  color: var(--color-aqua);
}
.footer__credit-link:hover .footer__credit-mark {
  transform: rotate(90deg);
  color: var(--color-coral);
}

/* ---------- Admin: login modal ---------- */
.modal {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  z-index: 50;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(20px) saturate(120%);
  animation: fade-in 400ms ease both;
}
.modal-body {
  position: relative;
  min-width: 380px;
  max-width: 92vw;
  padding: 32px 32px 28px;
  background: var(--color-paper);
  border-radius: var(--radius-lg);
  color: var(--color-abyss);
  box-shadow: var(--panel-inner-top), 0 30px 80px -20px rgba(15,30,59,0.28), 0 6px 20px -6px rgba(15,30,59,0.14);
  border: 1px solid var(--color-hair);
  overflow: hidden;
  animation: pop 500ms var(--ease-elastic) both;
}
.modal-body::before {
  content: "";
  position: absolute; inset: -1px;
  border-radius: inherit;
  background: conic-gradient(from 0deg,
    rgba(0,168,156,0.25),
    rgba(225,55,87,0.18),
    rgba(209,157,47,0.20),
    rgba(0,168,156,0.25));
  filter: blur(14px);
  z-index: -1;
  animation: ring-rotate 12s linear infinite;
  opacity: 0.55;
}
.modal-body h2 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-abyss);
}
.modal-body label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-mist);
  margin-bottom: 6px;
}
.modal-body input[type="password"] {
  width: 100%;
  padding: 12px 14px;
  font-size: 16px;
  font-family: var(--font-mono);
  letter-spacing: 0.25em;
  background: #fafcff;
}
.modal-body .btn-primary { width: 100%; justify-content: center; }
.hidden { display: none !important; }

/* ---------- Admin: drop zone ---------- */
.drop-zone {
  border: 1.5px dashed rgba(0,168,156,0.4);
  border-radius: var(--radius-panel);
  padding: 60px 40px;
  text-align: center;
  color: var(--color-mist);
  cursor: pointer;
  background: var(--color-paper);
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: 0.05em;
  transition: border-color 240ms ease, background 240ms ease, transform 240ms var(--ease-elastic), box-shadow 240ms ease, color 240ms ease;
  position: relative;
  box-shadow: var(--panel-inner-top), var(--shadow-panel);
}
.drop-zone::before {
  content: "◆";
  display: block;
  font-size: 28px;
  color: var(--color-aqua);
  margin-bottom: 8px;
  animation: pulse-mark 2.5s ease-in-out infinite;
}
.drop-zone:hover {
  border-color: var(--color-aqua);
  transform: translateY(-2px);
  background: var(--color-aqua-lo);
  box-shadow: var(--panel-inner-top), var(--shadow-panel-hover);
  color: var(--color-ink);
}
.drop-zone.dragover {
  border-color: var(--color-coral);
  background: var(--color-coral-lo);
  color: var(--color-ink);
  box-shadow: var(--shadow-glow-coral);
}

/* ---------- Admin: views ---------- */
.view {
  animation: fade-up 600ms var(--ease-elastic) both;
}
.view h2, .view h3 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-ink);
  margin: 22px 0 12px;
  letter-spacing: 0.03em;
}
.view h2 { font-size: 1.4rem; }
.view h3 {
  font-size: 1.05rem;
  padding-left: 12px;
  border-left: 3px solid var(--color-aqua);
  padding-top: 2px; padding-bottom: 2px;
}
.view p { color: var(--color-mist); }

.view label {
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 13px;
  display: inline-flex; align-items: center; gap: 8px;
  margin-right: 12px;
}

#p-result, #republish-result, #login-error {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-aqua);
  letter-spacing: 0.05em;
}
#login-error:not(:empty) {
  color: var(--color-coral);
  margin-top: 10px;
  padding: 8px 12px;
  background: var(--color-coral-lo);
  border-left: 2px solid var(--color-coral);
  border-radius: 4px;
}

/* ---------- Tables (all admin data) ---------- */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 13px;
  background: var(--color-paper);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-hair);
  box-shadow: var(--panel-inner-top), 0 2px 8px -4px rgba(15,30,59,0.08);
}
th, td {
  padding: 10px 14px;
  border: none;
  border-bottom: 1px solid var(--color-hair);
  text-align: left;
  color: var(--color-abyss);
}
thead th {
  background: var(--color-aqua-lo);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
  position: sticky; top: 0;
  border-bottom: 1px solid rgba(0,168,156,0.28);
}
tbody tr {
  transition: background 200ms ease, box-shadow 200ms ease;
}
tbody tr:nth-child(even) td { background: var(--color-cream); }
tbody tr:hover td {
  background: var(--color-aqua-lo);
  box-shadow: inset 3px 0 0 var(--color-aqua);
}
td input[type="number"], .grid-input input {
  width: 68px;
  padding: 5px 8px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-abyss);
  border-radius: 4px;
}

/* ---------- Sessions accordion ---------- */
details {
  background: var(--color-paper);
  border: 1px solid var(--color-hair);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-bottom: 14px !important;
  transition: border-color 200ms ease, box-shadow 200ms ease;
  box-shadow: var(--panel-inner-top), 0 2px 6px -4px rgba(15,30,59,0.08);
}
details[open] {
  border-color: rgba(0,168,156,0.35);
  box-shadow: var(--panel-inner-top), var(--shadow-panel);
}
details summary {
  cursor: pointer;
  list-style: none;
  padding: 4px 0;
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 14px;
  display: flex; align-items: center; gap: 12px;
  outline: none;
}
details summary::-webkit-details-marker { display: none; }
details summary::before {
  content: "▸";
  color: var(--color-aqua);
  font-family: var(--font-mono);
  transition: transform 240ms var(--ease-elastic);
  display: inline-block;
}
details[open] summary::before { transform: rotate(90deg); }
details summary strong {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-aqua);
  letter-spacing: 0.05em;
}

/* ---------- Admin: preview section ---------- */
#preview {
  margin-top: 24px;
  padding: 24px;
  background: var(--color-paper);
  border: 1px solid var(--color-hair);
  border-radius: var(--radius-panel);
  box-shadow: var(--panel-inner-top), var(--shadow-panel);
  animation: fade-up 500ms var(--ease-elastic) both;
}
#preview label { margin-right: 14px; margin-bottom: 8px; }

/* ---------- Admin header ---------- */
body.admin-page header {
  padding: 24px clamp(20px, 5vw, 56px);
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--color-hair);
}
body.admin-page header h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--color-abyss);
  letter-spacing: 0.03em;
  text-shadow: 0 1px 0 rgba(255,255,255,0.6);
}
body.admin-page header h1::before {
  content: "◆ ";
  color: var(--color-aqua);
}
body.admin-page main#app {
  padding: 8px clamp(20px, 5vw, 56px) 40px;
}
body.admin-page .header-right { display: flex; gap: 10px; }

/* ---------- Number counter helper ---------- */
.num-ticking { font-variant-numeric: tabular-nums; }
.num-ticking .tick {
  display: inline-block;
  animation: digit-flick 480ms var(--ease-elastic) both;
  will-change: transform, opacity;
}
@keyframes digit-flick {
  0%   { opacity: 0; transform: translateY(-6px); }
  60%  { opacity: 1; transform: translateY(2px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ---------- Animations ---------- */
@keyframes pulse-mark {
  0%, 100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.15); opacity: 0.75; }
}
@keyframes pulse-underline {
  0%, 100% { opacity: 0.6; }
  50%      { opacity: 1; }
}
@keyframes ring-rotate {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
@keyframes fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes pop {
  from { opacity: 0; transform: scale(0.94) translateY(6px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes chart-in {
  from { opacity: 0; filter: blur(6px); transform: scale(0.98); }
  to   { opacity: 1; filter: blur(0);   transform: scale(1); }
}
@keyframes mark-drop {
  0%   { opacity: 0; transform: scale(0) rotate(-180deg); }
  70%  { opacity: 1; transform: scale(1.25) rotate(20deg); }
  100% { opacity: 1; transform: scale(1) rotate(0deg); }
}
@keyframes eyebrow-slide {
  from { opacity: 0; transform: translateX(-24px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes title-stretch {
  from { opacity: 0; letter-spacing: 0.5em; transform: translateY(10px); }
  to   { opacity: 1; letter-spacing: 0.02em; transform: translateY(0); }
}
@keyframes en-tighten {
  from { opacity: 0; letter-spacing: 0.9em; }
  to   { opacity: 1; letter-spacing: 0.32em; }
}
@keyframes underline-draw {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}
@keyframes pill-bounce {
  0%   { opacity: 0; transform: translateY(10px) scale(0.92); }
  60%  { opacity: 1; transform: translateY(-3px) scale(1.03); }
  100% { opacity: 1; transform: translateY(0)    scale(1); }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
  }
  .aurora { opacity: 0.6; }
  .sealife, .waves, .rays, .sparkles, .seigaiha, .bingata-band { display: none !important; }
  .stage__frame { transform: none !important; }
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .hero { padding: 28px 20px 16px; }
  nav.tabs {
    margin: 6px 12px 4px;
    padding: 6px;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
            mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  }
  .tab { padding: 8px 14px 11px; font-size: 12.5px; }
  .controls { padding: 14px 20px 4px; gap: 10px; }
  main { padding: 4px 12px 24px; }
  .stage__frame { padding: 16px; min-height: 340px; }
  #heatmap td { width: 34px; height: 34px; min-width: 34px; font-size: 10px; }
  .modal-body { min-width: 300px; padding: 24px 20px 20px; }
  .footer {
    padding: 18px 20px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

/* Focus visibility */
:focus-visible {
  outline: 2px solid var(--color-aqua);
  outline-offset: 3px;
  border-radius: 4px;
}

/* =========================================================
   Data table — attendance-rate roster below chart
   ========================================================= */
.data-table-section {
  position: relative;
  z-index: 3;
  padding: 0 clamp(20px, 5vw, 56px) 8px;
  margin-top: 48px;
  animation: data-table-in 700ms var(--ease-elastic) 1550ms both;
}
.data-table-header {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}
.data-table-heading {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  line-height: 1.15;
}
.data-table-heading__jp {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--color-ink);
  letter-spacing: 0.02em;
}
.data-table-heading__en {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-aqua);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  font-weight: 500;
}
.data-table-subtitle {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-mist);
  letter-spacing: 0.05em;
  min-height: 0;
}
.data-table-subtitle:empty {
  display: none;
}

.data-table-wrap {
  position: relative;
  background: var(--color-paper);
  border: 1px solid var(--color-hair);
  border-radius: var(--radius-panel);
  box-shadow: var(--panel-inner-top), var(--shadow-panel);
  overflow-x: auto;
  overflow-y: hidden;
  transition: box-shadow 320ms ease;
  scrollbar-width: thin;
  scrollbar-color: rgba(0,168,156,0.45) transparent;
}
.data-table-wrap:hover {
  box-shadow: var(--panel-inner-top), var(--shadow-panel-hover);
}
.data-table-wrap::-webkit-scrollbar { height: 8px; }
.data-table-wrap::-webkit-scrollbar-track { background: transparent; }
.data-table-wrap::-webkit-scrollbar-thumb {
  background: rgba(0,168,156,0.4);
  border-radius: 4px;
}
.data-table-wrap::-webkit-scrollbar-thumb:hover {
  background: rgba(0,168,156,0.6);
}

table.data-table {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
  min-width: 620px;
  margin: 0;
  background: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
  overflow: visible;
}
table.data-table thead th {
  background: var(--color-aqua-lo);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: none;
  padding: 12px 14px;
  border-bottom: 1px solid var(--color-hair);
  position: sticky;
  top: 0;
  z-index: 1;
  white-space: nowrap;
  text-align: left;
}
table.data-table thead th.data-table-month {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-align: center;
}
table.data-table thead th.data-table-rowhead {
  background: color-mix(in oklab, var(--color-aqua-lo) 65%, var(--color-paper) 35%);
  position: sticky;
  left: 0;
  z-index: 3;
}
table.data-table thead th.data-table-avg {
  background: color-mix(in oklab, var(--color-gold-lo) 60%, var(--color-paper) 40%);
  color: var(--color-ink);
  text-align: center;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
table.data-table tbody th,
table.data-table tbody td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--color-hair);
  text-align: left;
  color: var(--color-abyss);
  background: var(--color-paper);
}
table.data-table tbody tr:last-child th,
table.data-table tbody tr:last-child td {
  border-bottom: none;
}
table.data-table tbody tr {
  animation: table-row-in 400ms ease-out both;
  animation-delay: calc(var(--i, 0) * 40ms + 100ms);
}
table.data-table tbody th.data-table-rowhead {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-ink);
  white-space: nowrap;
  position: sticky;
  left: 0;
  z-index: 2;
  background: var(--color-paper);
  box-shadow: 1px 0 0 var(--color-hair);
}
table.data-table tbody tr:nth-child(even) th.data-table-rowhead,
table.data-table tbody tr:nth-child(even) td {
  background: rgba(0, 168, 156, 0.03);
}
table.data-table tbody tr:hover th.data-table-rowhead,
table.data-table tbody tr:hover td {
  background: rgba(0, 168, 156, 0.07);
}
table.data-table tbody tr:hover th.data-table-rowhead {
  box-shadow: 2px 0 0 var(--color-aqua);
}
table.data-table tbody td.data-table-cell {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-abyss);
  text-align: center;
  letter-spacing: 0.02em;
  transition: background 200ms ease;
}
table.data-table tbody td.data-table-cell[data-value] {
  background: rgba(0, 168, 156, calc(var(--v, 0) * 0.28));
}
table.data-table tbody tr:nth-child(even) td.data-table-cell[data-value] {
  background: rgba(0, 168, 156, calc(0.03 + var(--v, 0) * 0.28));
}
table.data-table tbody tr:hover td.data-table-cell[data-value] {
  background: rgba(0, 168, 156, calc(0.07 + var(--v, 0) * 0.28));
}
table.data-table tbody td.data-table-cell--null {
  color: var(--color-mist);
  font-style: italic;
  font-family: var(--font-mono);
  text-align: center;
  background: var(--color-paper);
}
table.data-table tbody tr:nth-child(even) td.data-table-cell--null {
  background: rgba(0, 168, 156, 0.03);
}
table.data-table tbody td.data-table-avg {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-gold);
  background: rgba(209, 157, 47, 0.06);
  text-align: center;
}
table.data-table tbody tr:nth-child(even) td.data-table-avg {
  background: rgba(209, 157, 47, 0.10);
}
table.data-table tbody tr:hover td.data-table-avg {
  background: rgba(209, 157, 47, 0.15);
}
table.data-table tbody td.data-table-avg.data-table-cell--null {
  color: var(--color-mist);
  background: rgba(209, 157, 47, 0.04);
  font-weight: 500;
}

.data-table-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
  box-shadow: 0 0 0 2px var(--color-paper), 0 1px 2px rgba(15,30,59,0.16);
}

.data-table-empty {
  text-align: center;
  padding: 32px 0;
  color: var(--color-mist);
  font-style: italic;
  font-family: var(--font-body);
  font-size: 0.9rem;
}

@keyframes data-table-in {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes table-row-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 640px) {
  .data-table-section {
    padding: 0 12px 8px;
    margin-top: 32px;
  }
  .data-table-heading__jp { font-size: 1.25rem; }
  .data-table-heading__en { font-size: 0.7rem; letter-spacing: 0.2em; }
  table.data-table thead th,
  table.data-table tbody th,
  table.data-table tbody td {
    padding: 8px 10px;
    font-size: 0.82rem;
  }
  table.data-table thead th.data-table-month { font-size: 9.5px; }
}

@media (prefers-reduced-motion: reduce) {
  .data-table-section,
  table.data-table tbody tr {
    animation: none !important;
  }
}

/* ── data table: sortable headers ─────────────────────────────── */
.data-table thead th.data-table-sortable {
  cursor: pointer;
  user-select: none;
  position: relative;
  transition: background-color 0.16s ease, color 0.16s ease;
}
.data-table thead th.data-table-sortable:hover {
  background: color-mix(in oklab, var(--color-aqua-lo) 100%, var(--color-aqua) 8%);
  color: var(--color-ink);
}
.data-table thead th.data-table-sortable:focus-visible {
  outline: 2px solid var(--color-aqua);
  outline-offset: -2px;
}
.data-table thead th.data-table-sortable[aria-sort="ascending"],
.data-table thead th.data-table-sortable[aria-sort="descending"] {
  background: color-mix(in oklab, var(--color-aqua-lo) 100%, var(--color-aqua) 14%);
  color: var(--color-ink);
  box-shadow: inset 0 -2px 0 var(--color-aqua);
}
.data-table thead th.data-table-sortable[aria-sort="ascending"].data-table-avg,
.data-table thead th.data-table-sortable[aria-sort="descending"].data-table-avg {
  background: color-mix(in oklab, var(--color-gold-lo) 100%, var(--color-gold) 18%);
  box-shadow: inset 0 -2px 0 var(--color-gold);
}
.data-table thead th.data-table-sortable .data-table-th-label {
  margin-right: 0.4em;
}
.data-table-sort-arrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72em;
  color: var(--color-aqua);
  vertical-align: middle;
  transition: transform 0.24s cubic-bezier(0.22, 1, 0.36, 1), color 0.16s ease, opacity 0.16s ease;
  will-change: transform;
}
.data-table thead th.data-table-sortable[aria-sort="ascending"] .data-table-sort-arrow {
  transform: translateY(-1px);
  color: var(--color-aqua);
}
.data-table thead th.data-table-sortable[aria-sort="descending"] .data-table-sort-arrow {
  transform: translateY(1px);
  color: var(--color-aqua);
}
.data-table-sort-arrow--idle {
  color: var(--color-mist);
  opacity: 0.5;
}
.data-table thead th.data-table-sortable:hover .data-table-sort-arrow--idle {
  opacity: 0.85;
  color: var(--color-aqua);
}
@media (prefers-reduced-motion: reduce) {
  .data-table-sort-arrow { transition: none; }
}

/* ---------- Admin: drop zone dual-line labels ---------- */
.drop-zone__title {
  display: block;
  font-family: var(--font-heading, 'Shippori Mincho', serif);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-ink);
  margin-bottom: 6px;
}
.drop-zone__hint {
  display: block;
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-mist);
}