/* ====================================================================
   GAKUEN IDOLMASTER × SWISS DESIGN
   Complete redesign merging International Typographic Style with
   bright idol aesthetics - Superior to official website
   ==================================================================== */

:root {
  /* Bright Gakumas Palette - From official branding */
  --gk-coral: #FF9B9B;
  --gk-mint: #6DD4C6;
  --gk-sky: #A8E6FF;
  --gk-peach: #FFB8A8;
  --gk-lime: #C7F59B;
  --gk-lavender: #D4B5FF;
  --gk-yellow: #FFE380;
  --gk-pink: #FFD4E5;

  /* Swiss Design Grays */
  --gk-black: #1A1A1A;
  --gk-charcoal: #333333;
  --gk-gray: #757575;
  --gk-silver: #C8C8C8;
  --gk-light: #F5F5F5;
  --gk-white: #FFFFFF;

  /* Swiss Grid System */
  --gk-unit: 8px;
  --gk-gutter: calc(var(--gk-unit) * 3);
  --gk-margin: calc(var(--gk-unit) * 4);

  /* Typography - Helvetica-inspired stack */
  --gk-sans: "Helvetica Neue", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Arial, sans-serif;
  --gk-mono: "SF Mono", "Menlo", "Consolas", "Monaco", monospace;

  /* Shadows - Minimal, precise */
  --gk-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --gk-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --gk-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);

  /* Animation curves - Precise, mechanical */
  --gk-ease: cubic-bezier(0.4, 0, 0.2, 1);
  --gk-ease-out: cubic-bezier(0, 0, 0.2, 1);
  --gk-ease-in: cubic-bezier(0.4, 0, 1, 1);
}

/* ====================================================================
   BASE & RESET
   ==================================================================== */

.gp-page {
  margin: 0;
  padding: 0;
  min-height: 100svh;
  font-family: var(--gk-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--gk-charcoal);
  background: var(--gk-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "kern" 1, "liga" 1;
  overflow-x: hidden;
}

.gp-page *,
.gp-page *::before,
.gp-page *::after {
  box-sizing: border-box;
}

.gp-page button {
  font-family: inherit;
  color: inherit;
  border: none;
  background: none;
  cursor: pointer;
  padding: 0;
  margin: 0;
}

.gp-page[data-phase="play"] { overflow: hidden; }
.gp-page[data-phase="play"] .gp-app { display: none; }
.gp-page [hidden] { display: none !important; }

.gp-defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

:is(.gp-app, .gp-player-bar, .gp-settings) svg {
  width: 1em;
  height: 1em;
  fill: currentColor;
  flex: none;
}

/* ====================================================================
   ANIMATED BACKGROUND - Floating petals & sparkles
   ==================================================================== */

.gp-page::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(255, 155, 155, 0.06) 0%, transparent 35%),
    radial-gradient(circle at 85% 70%, rgba(109, 212, 198, 0.06) 0%, transparent 35%),
    radial-gradient(circle at 50% 50%, rgba(168, 230, 255, 0.04) 0%, transparent 40%);
  pointer-events: none;
  z-index: 0;
  animation: gk-ambient-shift 20s ease-in-out infinite alternate;
}

@keyframes gk-ambient-shift {
  0% { opacity: 0.5; }
  100% { opacity: 1; }
}

/* Floating petals */
.gp-page::after {
  content: "";
  position: fixed;
  inset: -10%;
  background: url('./assets/petals.png') repeat;
  background-size: 400px 400px;
  opacity: 0.15;
  animation: gk-petals-float 60s linear infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes gk-petals-float {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(-20px, -100px) rotate(360deg); }
}

/* ====================================================================
   GRID SYSTEM - Strict Swiss layout
   ==================================================================== */

.gp-app {
  position: relative;
  z-index: 1;
  min-height: 100svh;
  display: grid;
  grid-template-columns:
    [full-start] var(--gk-margin)
    [content-start] 1fr [content-end]
    var(--gk-margin) [full-end];
  grid-template-rows: auto 1fr auto;
  gap: 0;
}

.gp-app > * {
  grid-column: content;
}

/* ====================================================================
   HEADER - Minimalist with precise alignment
   ==================================================================== */

.gp-header {
  position: sticky;
  top: 0;
  z-index: 100;
  grid-column: full;
  display: grid;
  grid-template-columns: subgrid;
  align-items: center;
  height: calc(var(--gk-unit) * 10);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px) saturate(1.8);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  animation: gk-slide-down 0.6s var(--gk-ease-out) backwards;
}

@keyframes gk-slide-down {
  from {
    opacity: 0;
    transform: translateY(-100%);
  }
}

.gp-header > * {
  grid-column: content;
}

.gp-header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  height: 100%;
}

.gp-header .gp-settings-button,
.gp-player .gp-player-settings {
  min-width: calc(var(--gk-unit) * 9);
  height: calc(var(--gk-unit) * 5);
  padding: 0 calc(var(--gk-unit) * 2);
  border: 1px solid var(--gk-black);
  background: var(--gk-white);
  color: var(--gk-black);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.gp-player .gp-player-settings {
  border-color: rgba(255, 255, 255, 0.7);
  background: rgba(0, 0, 0, 0.35);
  color: var(--gk-white);
}

.gp-header .gp-settings-button:hover,
.gp-player .gp-player-settings:hover {
  background: var(--gk-mint);
  border-color: var(--gk-mint);
  color: var(--gk-black);
}

.gp-brand {
  display: flex;
  align-items: center;
  gap: calc(var(--gk-unit) * 2);
  text-decoration: none;
  color: var(--gk-black);
  transition: transform 0.3s var(--gk-ease);
}

.gp-brand:hover {
  transform: translateX(2px);
}

.gp-mark {
  width: 180px;
  height: auto;
  display: block;
}

.gp-mark img {
  width: 100%;
  height: auto;
  display: block;
}

.gp-header-actions {
  display: flex;
  gap: calc(var(--gk-unit) * 2);
  align-items: center;
}

.gp-icon-button {
  width: calc(var(--gk-unit) * 5);
  height: calc(var(--gk-unit) * 5);
  display: grid;
  place-items: center;
  border-radius: 0;
  background: var(--gk-black);
  color: var(--gk-white);
  font-size: 18px;
  transition: all 0.2s var(--gk-ease);
  position: relative;
  overflow: hidden;
}

.gp-icon-button::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gk-mint);
  transform: translateY(100%);
  transition: transform 0.3s var(--gk-ease);
}

.gp-icon-button svg {
  position: relative;
  z-index: 1;
}

.gp-icon-button:hover::before {
  transform: translateY(0);
}

.gp-icon-button:active {
  transform: scale(0.95);
}

/* ====================================================================
   HERO - Bold Swiss typography with geometric accents
   ==================================================================== */

.gp-hero {
  margin-top: calc(var(--gk-unit) * 10);
  margin-bottom: calc(var(--gk-unit) * 8);
  position: relative;
  animation: gk-fade-up 0.8s var(--gk-ease-out) 0.2s backwards;
}

@keyframes gk-fade-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
}

.gp-kicker {
  margin: 0 0 calc(var(--gk-unit) * 2);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gk-mint);
  display: flex;
  align-items: center;
  gap: calc(var(--gk-unit) * 2);
}

.gp-kicker::before,
.gp-kicker::after {
  content: "";
  height: 1px;
  background: currentColor;
  flex: 0 0 calc(var(--gk-unit) * 4);
}

.gp-hero h1 {
  margin: 0;
  font-size: clamp(36px, 7vw, 72px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--gk-black);
  position: relative;
  display: inline-block;
}

.gp-hero h1::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 60%;
  height: 6px;
  background: linear-gradient(90deg,
    var(--gk-coral) 0%,
    var(--gk-peach) 33%,
    var(--gk-mint) 66%,
    var(--gk-sky) 100%
  );
  animation: gk-underline-draw 0.8s var(--gk-ease-out) 0.6s backwards;
}

@keyframes gk-underline-draw {
  from {
    width: 0;
  }
}

.gp-sparkle {
  display: inline-block;
  width: 28px !important;
  height: 28px !important;
  margin-left: 8px;
  vertical-align: middle;
  animation: gk-sparkle-rotate 3s linear infinite;
}

@keyframes gk-sparkle-rotate {
  0%, 100% { transform: rotate(0deg) scale(1); }
  50% { transform: rotate(180deg) scale(1.1); }
}

.gp-hero-lead {
  margin: calc(var(--gk-unit) * 4) 0 0;
  max-width: 48em;
  font-size: 17px;
  line-height: 1.7;
  color: var(--gk-gray);
}

.gp-steps {
  margin: calc(var(--gk-unit) * 6) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: calc(var(--gk-unit) * 2);
  max-width: 600px;
}

.gp-steps li {
  display: flex;
  flex-direction: column;
  gap: calc(var(--gk-unit));
  padding: calc(var(--gk-unit) * 2);
  background: var(--gk-light);
  border-left: 3px solid var(--gk-silver);
  transition: all 0.3s var(--gk-ease);
  animation: gk-fade-up 0.5s var(--gk-ease-out) backwards;
}

.gp-steps li:nth-child(1) { animation-delay: 0.8s; }
.gp-steps li:nth-child(2) { animation-delay: 0.9s; }
.gp-steps li:nth-child(3) { animation-delay: 1.0s; }

.gp-steps li.is-current {
  background: var(--gk-black);
  color: var(--gk-white);
  border-left-color: var(--gk-mint);
}

.gp-steps li.is-done {
  border-left-color: var(--gk-mint);
  background: rgba(109, 212, 198, 0.1);
}

.gp-steps b {
  font-size: 24px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--gk-coral);
}

.gp-steps li.is-current b {
  color: var(--gk-mint);
}

.gp-steps span {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ====================================================================
   WORKSPACE - Asymmetric Swiss grid
   ==================================================================== */

.gp-workspace {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gk-gutter);
  margin-bottom: calc(var(--gk-unit) * 10);
  animation: gk-fade-up 0.8s var(--gk-ease-out) 1.1s backwards;
}

.gp-compose {
  grid-column: span 12;
}

.gp-script-card {
  grid-column: span 12;
}

@media (min-width: 1024px) {
  .gp-compose {
    grid-column: span 7;
  }

  .gp-script-card {
    grid-column: span 5;
  }
}

.gp-section-title {
  margin-bottom: calc(var(--gk-unit) * 3);
  display: flex;
  align-items: baseline;
  gap: calc(var(--gk-unit) * 2);
}

.gp-hex {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gk-white);
  background: var(--gk-black);
  padding: calc(var(--gk-unit) * 0.75) calc(var(--gk-unit) * 2);
  clip-path: polygon(
    6px 0, calc(100% - 6px) 0,
    100% 6px, 100% calc(100% - 6px),
    calc(100% - 6px) 100%, 6px 100%,
    0 calc(100% - 6px), 0 6px
  );
}

.gp-section-title h2 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--gk-black);
}

/* ==================================================================
   MODE SELECTOR - Geometric cards with color-coding
   ================================================================== */

.gp-modes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--gk-gutter);
  margin-bottom: calc(var(--gk-unit) * 4);
}

.gp-mode {
  --mode-color: var(--gk-coral);
  position: relative;
  padding: calc(var(--gk-unit) * 3);
  background: var(--gk-white);
  border: 2px solid var(--gk-light);
  transition: all 0.3s var(--gk-ease);
  cursor: pointer;
  overflow: hidden;
  animation: gk-scale-in 0.4s var(--gk-ease-out) backwards;
}

.gp-mode:nth-child(1) { animation-delay: 1.2s; }
.gp-mode:nth-child(2) { animation-delay: 1.3s; --mode-color: var(--gk-sky); }
.gp-mode:nth-child(3) { animation-delay: 1.4s; --mode-color: var(--gk-lime); }

@keyframes gk-scale-in {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
}

.gp-mode::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: var(--mode-color);
  transition: height 0.3s var(--gk-ease);
}

.gp-mode:hover {
  border-color: var(--mode-color);
  transform: translateY(-2px);
  box-shadow: var(--gk-shadow-md);
}

.gp-mode:hover::before,
.gp-mode.is-active::before {
  height: 100%;
}

.gp-mode.is-active {
  background: var(--gk-black);
  color: var(--gk-white);
  border-color: var(--gk-black);
  box-shadow: var(--gk-shadow-lg);
}

.gp-mode-icon {
  position: absolute;
  top: calc(var(--gk-unit) * 2);
  right: calc(var(--gk-unit) * 2);
  width: calc(var(--gk-unit) * 6);
  height: calc(var(--gk-unit) * 6);
  opacity: 0.15;
}

.gp-mode.is-active .gp-mode-icon {
  opacity: 0.3;
}

.gp-mode-no {
  font-size: 48px;
  font-weight: 300;
  line-height: 1;
  color: var(--mode-color);
  margin-bottom: calc(var(--gk-unit) * 2);
  font-variant-numeric: tabular-nums;
}

.gp-mode.is-active .gp-mode-no {
  color: var(--gk-mint);
}

.gp-mode strong {
  display: block;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: calc(var(--gk-unit) * 0.5);
}

.gp-mode small {
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mode-color);
  margin-bottom: calc(var(--gk-unit) * 1.5);
}

.gp-mode.is-active small {
  color: var(--gk-silver);
}

.gp-mode em {
  display: block;
  font-size: 13px;
  font-style: normal;
  line-height: 1.5;
  color: var(--gk-gray);
}

.gp-mode.is-active em {
  color: var(--gk-silver);
}

/* ====================================================================
   CARDS - Clean, bordered containers
   ==================================================================== */

.gp-card {
  background: var(--gk-white);
  border: 2px solid var(--gk-light);
  padding: calc(var(--gk-unit) * 3);
  position: relative;
  overflow: hidden;
  animation: gk-fade-up 0.6s var(--gk-ease-out) 1.4s backwards;
}

.gp-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg,
    var(--gk-coral) 0%,
    var(--gk-mint) 50%,
    var(--gk-sky) 100%
  );
}

.gp-card-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: calc(var(--gk-unit) * 2);
  padding-bottom: calc(var(--gk-unit) * 2);
  border-bottom: 1px solid var(--gk-light);
}

.gp-card-head small {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gk-mint);
}

.gp-card-head h3 {
  margin: calc(var(--gk-unit) * 0.5) 0 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--gk-black);
}

.gp-counter,
.gp-tag {
  font-size: 11px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  background: var(--gk-black);
  color: var(--gk-white);
  padding: calc(var(--gk-unit) * 0.75) calc(var(--gk-unit) * 1.5);
  letter-spacing: 0.05em;
}

.gp-tag.is-ready {
  background: var(--gk-mint);
  color: var(--gk-black);
}

.gp-card-note {
  margin: 0 0 calc(var(--gk-unit) * 2);
  font-size: 14px;
  line-height: 1.6;
  color: var(--gk-gray);
}

/* Textarea - Monospace input */
.gp-textarea {
  width: 100%;
  min-height: 200px;
  padding: calc(var(--gk-unit) * 2);
  font-family: var(--gk-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--gk-black);
  background: var(--gk-light);
  border: 2px solid transparent;
  outline: none;
  resize: vertical;
  transition: all 0.2s var(--gk-ease);
}

.gp-textarea::placeholder {
  color: var(--gk-silver);
}

.gp-textarea:focus {
  background: var(--gk-white);
  border-color: var(--gk-mint);
}

.gp-script-text {
  min-height: 400px;
  font-size: 12px;
  white-space: pre;
  overflow-wrap: normal;
  overflow-x: auto;
  tab-size: 2;
}

.gp-input-card .gp-textarea {
  min-height: 260px;
}

.gp-card-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--gk-gutter);
  margin-top: calc(var(--gk-unit) * 3);
  padding-top: calc(var(--gk-unit) * 3);
  border-top: 1px solid var(--gk-light);
  flex-wrap: wrap;
}

.gp-status {
  font-size: 13px;
  color: var(--gk-gray);
  flex: 1 1 200px;
}

.gp-status[data-tone="ok"] { color: var(--gk-lime); }
.gp-status[data-tone="warn"] { color: var(--gk-yellow); }
.gp-status[data-tone="error"] { color: var(--gk-coral); }
.gp-status[data-tone="busy"] { color: var(--gk-sky); }

.gp-status[data-tone="busy"]::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  background: currentColor;
  animation: gk-pulse 1.5s ease-in-out infinite;
}

@keyframes gk-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

/* ====================================================================
   BUTTONS - Swiss precision with bright accents
   ==================================================================== */

.gp-capsule {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--gk-unit) * 2);
  padding: 0 calc(var(--gk-unit) * 3);
  height: calc(var(--gk-unit) * 6);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: var(--gk-black);
  color: var(--gk-white);
  border: 2px solid var(--gk-black);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s var(--gk-ease);
}

.gp-capsule::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gk-mint);
  transform: translateX(-100%);
  transition: transform 0.3s var(--gk-ease);
}

.gp-capsule > * {
  position: relative;
  z-index: 1;
}

.gp-capsule:hover:not(:disabled)::before {
  transform: translateX(0);
}

.gp-capsule:hover:not(:disabled) {
  border-color: var(--gk-mint);
}

.gp-capsule:active:not(:disabled) {
  transform: scale(0.98);
}

.gp-capsule:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.gp-capsule svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s var(--gk-ease);
}

.gp-capsule:hover:not(:disabled) svg {
  transform: translateX(4px);
}

.gp-capsule-main {
  background: linear-gradient(90deg, var(--gk-coral) 0%, var(--gk-peach) 100%);
  border-color: transparent;
  color: var(--gk-white);
}

.gp-capsule-main::before {
  background: var(--gk-black);
}

.gp-capsule-play {
  background: var(--gk-mint);
  color: var(--gk-black);
  border-color: var(--gk-mint);
  min-width: 160px;
  justify-content: center;
}

.gp-capsule-play::before {
  background: var(--gk-black);
}

.gp-capsule-play:hover:not(:disabled) {
  color: var(--gk-white);
}

.gp-capsule-outline {
  background: transparent;
  color: var(--gk-black);
  border-color: var(--gk-black);
}

.gp-capsule-outline::before {
  background: var(--gk-black);
}

.gp-capsule-outline:hover:not(:disabled) {
  color: var(--gk-white);
}

/* Tool buttons */
.gp-script-tools {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--gk-unit) * 1.5);
  margin-bottom: calc(var(--gk-unit) * 2);
}

.gp-tool {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--gk-unit));
  padding: 0 calc(var(--gk-unit) * 2);
  height: calc(var(--gk-unit) * 4);
  font-size: 12px;
  font-weight: 600;
  background: var(--gk-light);
  color: var(--gk-black);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s var(--gk-ease);
}

.gp-tool svg {
  width: 14px;
  height: 14px;
}

.gp-tool:hover:not(:disabled) {
  background: var(--gk-black);
  color: var(--gk-white);
}

.gp-tool:active:not(:disabled) {
  transform: scale(0.95);
}

.gp-tool:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.gp-script-actions {
  display: flex;
  justify-content: flex-end;
  gap: calc(var(--gk-unit) * 2);
  flex-wrap: wrap;
}

/* Editor card */
.gp-editor-card {
  position: relative;
  padding: calc(var(--gk-unit) * 4);
}

.gp-editor-art {
  position: absolute;
  top: calc(var(--gk-unit) * 2);
  right: calc(var(--gk-unit) * 2);
  width: calc(var(--gk-unit) * 10);
  height: calc(var(--gk-unit) * 10);
  opacity: 0.1;
  animation: gk-sparkle-rotate 20s linear infinite;
}

/* ====================================================================
   PLAYER UI - Fullscreen immersive mode
   ==================================================================== */

.gp-player {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--gk-black);
}

.gp-player .beat-stage.gp-stage {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  aspect-ratio: auto;
  border-radius: 0;
}

.gp-player .beat-view-tools {
  display: none;
}

.gp-story-chrome {
  left: 50%;
  right: auto;
  width: min(100%, 1180px);
  padding: 0 var(--gk-margin) calc(var(--gk-margin) + env(safe-area-inset-bottom));
  transform: translateX(-50%);
}

.gp-player-chrome {
  position: absolute;
  z-index: 30;
  inset: 0 0 auto;
  height: 0;
}

.gp-player-bar {
  position: absolute;
  inset: 0 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--gk-gutter);
  padding: calc(var(--gk-margin) + env(safe-area-inset-top)) var(--gk-margin) var(--gk-margin);
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.6) 0%, transparent 100%);
  backdrop-filter: blur(10px);
  pointer-events: none;
  transition: opacity 0.3s var(--gk-ease), transform 0.3s var(--gk-ease);
}

.gp-player-chrome.is-hidden .gp-player-bar {
  opacity: 0;
  transform: translateY(-100%);
}

.gp-player-bar > * {
  pointer-events: auto;
}

.gp-player-controls {
  display: flex;
  gap: calc(var(--gk-unit) * 1.5);
}

.gp-player-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: calc(var(--gk-unit));
  min-width: calc(var(--gk-unit) * 5);
  height: calc(var(--gk-unit) * 5);
  padding: 0 calc(var(--gk-unit) * 2);
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--gk-white);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s var(--gk-ease);
}

.gp-player-button:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.6);
}

.gp-player-button:active {
  transform: scale(0.95);
}

.gp-player-back {
  padding: 0 calc(var(--gk-unit) * 2.5);
}

.gp-player-auto .gp-auto-pause {
  display: none;
}

.gp-player-auto[aria-pressed="true"] {
  background: var(--gk-mint);
  color: var(--gk-black);
  border-color: var(--gk-mint);
}

.gp-player-auto[aria-pressed="true"] .gp-auto-play {
  display: none;
}

.gp-player-auto[aria-pressed="true"] .gp-auto-pause {
  display: block;
}

.gp-player-progress {
  font-family: var(--gk-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.9);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

/* ====================================================================
   SETTINGS DIALOG - Clean modal
   ==================================================================== */

.gp-settings {
  max-width: 560px;
  width: calc(100% - var(--gk-margin) * 2);
  max-height: calc(100svh - var(--gk-margin) * 2);
  padding: 0;
  border: 2px solid var(--gk-light);
  border-radius: 0;
  background: var(--gk-white);
  box-shadow: var(--gk-shadow-lg);
  overflow: auto;
}

.gp-settings::backdrop {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.gp-settings[open] {
  animation: gk-modal-enter 0.3s var(--gk-ease-out);
}

@keyframes gk-modal-enter {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
}

.gp-settings-form {
  display: grid;
  gap: calc(var(--gk-unit) * 3);
  padding: calc(var(--gk-unit) * 4);
}

.gp-settings fieldset {
  margin: 0;
  padding: calc(var(--gk-unit) * 3);
  border: 2px solid var(--gk-light);
  display: grid;
  gap: calc(var(--gk-unit) * 2);
}

.gp-settings legend {
  padding: 0 calc(var(--gk-unit));
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gk-mint);
}

.gp-settings label {
  display: grid;
  gap: calc(var(--gk-unit));
  font-size: 13px;
  font-weight: 600;
  color: var(--gk-charcoal);
}

.gp-settings input[type="url"],
.gp-settings input[type="text"],
.gp-settings input[type="password"] {
  height: calc(var(--gk-unit) * 5);
  padding: 0 calc(var(--gk-unit) * 1.5);
  font-family: inherit;
  font-size: 14px;
  color: var(--gk-black);
  background: var(--gk-light);
  border: 2px solid transparent;
  outline: none;
  transition: all 0.2s var(--gk-ease);
}

.gp-settings input:focus {
  background: var(--gk-white);
  border-color: var(--gk-mint);
}

.gp-settings .gp-switch {
  display: flex;
  align-items: center;
  gap: calc(var(--gk-unit) * 1.5);
}

.gp-settings .gp-switch input {
  width: 20px;
  height: 20px;
  accent-color: var(--gk-mint);
}

/* Anti-aliasing options */
.gp-aa {
  display: grid;
  gap: calc(var(--gk-unit) * 1.5);
}

.gp-aa-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--gk-charcoal);
}

.gp-aa-options {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: calc(var(--gk-unit));
}

.gp-settings .gp-aa-options label {
  display: block;
  gap: 0;
}

.gp-aa-options input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  border: 0;
}

.gp-aa-options span {
  display: grid;
  place-items: center;
  height: calc(var(--gk-unit) * 5);
  font-size: 12px;
  font-weight: 700;
  background: var(--gk-light);
  color: var(--gk-charcoal);
  cursor: pointer;
  transition: all 0.2s var(--gk-ease);
}

.gp-aa-options span:hover {
  background: var(--gk-silver);
}

.gp-aa-options input:checked + span {
  background: var(--gk-black);
  color: var(--gk-white);
}

.gp-aa-options input:focus-visible + span {
  outline: 2px solid var(--gk-mint);
  outline-offset: 2px;
}

.gp-settings-note {
  margin: 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--gk-gray);
}

.gp-settings-actions {
  display: flex;
  justify-content: flex-end;
  gap: calc(var(--gk-unit) * 2);
}

/* ====================================================================
   TOAST NOTIFICATIONS
   ==================================================================== */

.gp-toast {
  position: fixed;
  z-index: 2000;
  left: 50%;
  bottom: calc(var(--gk-margin) + env(safe-area-inset-bottom));
  transform: translate(-50%, 0);
  padding: calc(var(--gk-unit) * 2) calc(var(--gk-unit) * 3);
  background: var(--gk-black);
  color: var(--gk-white);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  box-shadow: var(--gk-shadow-lg);
  opacity: 0;
  transition: opacity 0.3s var(--gk-ease);
  pointer-events: none;
}

.gp-toast.is-visible {
  opacity: 1;
}

/* ====================================================================
   FOOTER
   ==================================================================== */

.gp-footer {
  padding: calc(var(--gk-unit) * 4) 0 calc(var(--gk-unit) * 6);
  text-align: center;
}

.gp-footer p {
  margin: 0;
  font-size: 12px;
  color: var(--gk-silver);
}

/* ====================================================================
   BACKDROP ELEMENTS - Geometric decorations
   ==================================================================== */

.gp-backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.gp-outline-word,
.gp-motif,
.gp-motif-a,
.gp-motif-b,
.gp-motif-c,
.gp-motif-d,
.gp-shape {
  display: none;
}

/* ====================================================================
   RESPONSIVE ADJUSTMENTS
   ==================================================================== */

@media (min-width: 640px) {
  :root {
    --gk-margin: calc(var(--gk-unit) * 6);
    --gk-gutter: calc(var(--gk-unit) * 4);
  }

  .gp-mode em {
    display: block;
  }
}

@media (min-width: 1024px) {
  :root {
    --gk-margin: calc(var(--gk-unit) * 8);
  }

  .gp-hero {
    margin-top: calc(var(--gk-unit) * 12);
  }
}

@media (max-width: 639px) {
  .gp-mark {
    width: 140px;
  }

  .gp-hero h1 {
    font-size: 32px;
  }

  .gp-steps {
    grid-template-columns: 1fr;
  }

  .gp-player-back span {
    display: none;
  }
}

/* ====================================================================
   UTILITY & STATES
   ==================================================================== */

.gp-page.is-generating .gp-script-text {
  background: repeating-linear-gradient(
    45deg,
    var(--gk-light) 0,
    var(--gk-light) 20px,
    rgba(109, 212, 198, 0.1) 20px,
    rgba(109, 212, 198, 0.1) 40px
  );
  animation: gk-stripe-scroll 1s linear infinite;
}

@keyframes gk-stripe-scroll {
  0% { background-position: 0 0; }
  100% { background-position: 40px 0; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Print styles */
@media print {
  .gp-header,
  .gp-footer,
  .gp-player-chrome {
    display: none;
  }

  .gp-card {
    page-break-inside: avoid;
  }
}