/*
  Subtitle-Studio — Precision Stream UI
  Source of truth: docs/brand/precision_stream_ui/DESIGN.md
*/

@import url("https://cdn.jsdelivr.net/gh/vazirmatn/vazirmatn@v33.003/Vazirmatn-font-face.css");
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@500&family=Plus+Jakarta+Sans:wght@600;700;800&display=swap");

:root {
  --color-background: #faf8ff;
  --color-on-background: #131b2e;
  --color-surface: #faf8ff;
  --color-surface-container-lowest: #ffffff;
  --color-surface-container-low: #f2f3ff;
  --color-surface-container: #eaedff;
  --color-surface-container-high: #e2e7ff;
  --color-surface-container-highest: #dae2fd;
  --color-surface-dim: #d2d9f4;
  --color-on-surface: #131b2e;
  --color-on-surface-variant: #434656;
  --color-outline: #747688;
  --color-outline-variant: #c4c5d9;
  --color-primary: #0040df;
  --color-primary-container: #2d5bff;
  --color-on-primary: #ffffff;
  --color-primary-fixed: #dde1ff;
  --color-secondary: #4648d4;
  --color-on-secondary: #ffffff;
  --color-tertiary: #993100;
  --color-tertiary-container: #c24100;
  --color-error: #ba1a1a;
  --color-error-container: #ffdad6;
  --color-on-error-container: #93000a;
  --color-inverse-surface: #283044;
  --color-inverse-on-surface: #eef0ff;
  --color-success: #047857;
  --color-success-soft: #ecfdf5;
  --color-warning: #b37b22;
  --color-warning-soft: #fff9f0;
  --color-warning-border: #ffe4b5;

  --font-display: "Plus Jakarta Sans", "Vazirmatn", system-ui, sans-serif;
  --font-sans: "Inter", "Vazirmatn", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --radius-sm: 0.25rem;
  --radius-btn: 0.5rem;
  --radius-md: 0.75rem;
  --radius-card: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  --shadow-raised: 0 4px 20px rgba(15, 23, 42, 0.05);
  --shadow-overlay: 0 12px 32px rgba(15, 23, 42, 0.06);
  --shadow-featured: 0 12px 32px rgba(15, 23, 42, 0.08);

  --space-unit: 4px;
  --container-max: 1200px;

  --color-base-100: #faf8ff;
  --color-base-200: #ffffff;
  --color-base-300: #c4c5d9;
  --color-base-content: #131b2e;
  --color-primary-content: #ffffff;
  --color-secondary-content: #ffffff;
  --color-neutral: #434656;
}

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

html {
  font-family: var(--font-sans);
  scroll-behavior: smooth;
  color-scheme: light;
}

/* Scope to html so descendants can override (e.g. Material Symbols icons). */
html:lang(fa) {
  font-family: "Vazirmatn", "Inter", system-ui, sans-serif;
}

html:lang(en) {
  font-family: "Inter", "Vazirmatn", system-ui, sans-serif;
}

/* Ligature icons — must beat inherited body fonts or names like "check_circle" show as text. */
.material-symbols-outlined {
  font-family: "Material Symbols Outlined", sans-serif;
  font-weight: normal;
  font-style: normal;
  font-size: 1.25rem;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  font-feature-settings: "liga";
  -webkit-font-feature-settings: "liga";
  -webkit-font-smoothing: antialiased;
  font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24;
}

[dir="rtl"] {
  text-align: right;
}

[dir="ltr"] {
  text-align: left;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--color-background);
  background-image: radial-gradient(
    circle at 50% 0%,
    rgba(221, 225, 255, 0.4) 0%,
    transparent 60%
  );
  background-repeat: no-repeat;
  background-attachment: fixed;
  color: var(--color-on-background);
  -webkit-font-smoothing: antialiased;
}

.font-display {
  font-family: var(--font-display);
}

.font-mono {
  font-family: var(--font-mono);
}

.app-shell {
  inline-size: 100%;
  max-inline-size: 56rem;
  margin-inline: auto;
  padding-block: 1rem;
  padding-inline: 1rem;
  position: relative;
  z-index: 10;
}

@media (min-width: 640px) {
  .app-shell {
    padding-block: 1.5rem;
    padding-inline: 1.25rem;
  }
}

@media (min-width: 768px) {
  .app-shell {
    padding-block: 2.5rem;
    padding-inline: 1.5rem;
  }
}

/* Workspace / card surfaces */
.ps-card {
  background: var(--color-surface-container-lowest);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-overlay);
}

.cinematic-card {
  background: var(--color-surface-container-lowest);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-overlay);
}

.cinematic-card-elevated {
  box-shadow: var(--shadow-featured);
}

.feature-card-light {
  padding: 2rem;
  border-radius: var(--radius-md);
  background: var(--color-surface-container-lowest);
  border: 1px solid var(--color-outline-variant);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.03);
  transition:
    box-shadow 0.3s ease,
    transform 0.3s ease;
}

.feature-card-light:hover {
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
  transform: translateY(-4px);
}

.pricing-card {
  padding: 2rem;
  border-radius: var(--radius-md);
  background: var(--color-surface-container-lowest);
  border: 1px solid var(--color-outline-variant);
  box-shadow: var(--shadow-raised);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  block-size: 100%;
  position: relative;
  transition:
    box-shadow 0.3s ease,
    transform 0.3s ease;
}

.pricing-card:hover {
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  transform: translateY(-4px);
}

.pricing-card-featured {
  border: 2px solid var(--color-primary);
  box-shadow: var(--shadow-featured);
  transform: scale(1.02);
}

.pricing-card-featured:hover {
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
  transform: scale(1.02) translateY(-4px);
}

/* Drop zones */
.drop-zone-light {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--color-outline-variant);
  background-color: var(--color-surface);
  border-radius: var(--radius-btn);
  transition:
    border-color 0.2s cubic-bezier(0.16, 1, 0.3, 1),
    background-color 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.drop-zone-light:hover,
.drop-zone-light.is-dragover,
.drop-zone-light:focus-within {
  border-color: var(--color-primary);
  background-color: var(--color-surface-container-low);
}

.field-input-light {
  inline-size: 100%;
  min-block-size: 2.75rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-btn);
  background: var(--color-surface-container-lowest);
  color: var(--color-on-surface);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease;
}

.field-input-light:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.field-readonly {
  background: var(--color-surface-container-low);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-btn);
  padding: 0.75rem 1rem;
  min-block-size: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

/* Primary CTA */
.btn-cinematic {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  inline-size: 100%;
  min-block-size: 3.25rem;
  padding: 1rem 1.25rem;
  border: none;
  border-radius: var(--radius-btn);
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.125rem;
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
  transition:
    background 0.15s ease,
    transform 0.15s ease,
    box-shadow 0.15s ease;
}

.btn-cinematic:hover:not(:disabled) {
  background: color-mix(in srgb, var(--color-primary) 90%, black);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 64, 223, 0.25);
}

.btn-cinematic:active:not(:disabled) {
  transform: scale(0.99);
}

.btn-cinematic:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--color-primary) 45%, transparent);
  outline-offset: 2px;
}

.btn-cinematic:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-ghost-light {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-block-size: 2.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-btn);
  border: 1px solid var(--color-outline-variant);
  background: transparent;
  color: var(--color-on-surface);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition:
    background 0.15s ease,
    border-color 0.15s ease;
}

.btn-ghost-light:hover {
  background: var(--color-surface-container);
}

.btn-ghost-light:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--color-primary) 35%, transparent);
  outline-offset: 2px;
}

.btn-secondary-ps {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-block-size: 2.75rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-btn);
  border: 1px solid var(--color-outline-variant);
  background: var(--color-surface-container);
  color: var(--color-primary);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition:
    background 0.15s ease,
    transform 0.15s ease;
}

.btn-secondary-ps:hover {
  background: var(--color-surface-container-high);
  transform: translateY(-2px);
}

/* Mode tabs */
.mode-tab-active {
  background: var(--color-primary) !important;
  color: var(--color-on-primary) !important;
  border: none !important;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.08);
}

.mode-tab-idle {
  background: transparent;
  color: var(--color-on-surface-variant);
}

.mode-tab-idle:hover {
  color: var(--color-on-surface);
}

.mode-badge {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-secondary);
  background: var(--color-surface-container);
  border: 1px solid var(--color-primary-fixed);
  border-radius: var(--radius-sm);
  padding: 0.375rem 0.75rem;
}

/* Progress */
.progress-track-light {
  inline-size: 100%;
  block-size: 8px;
  border-radius: var(--radius-full);
  background: var(--color-surface-container-highest);
  overflow: hidden;
}

.progress-fill-cinematic {
  block-size: 100%;
  inline-size: 0%;
  border-radius: inherit;
  background: var(--color-primary);
  transition: width 0.3s ease;
}

.status-pill-ready {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 400;
  background: var(--color-surface-container-low);
  color: var(--color-primary);
  border: 1px solid var(--color-primary-fixed);
}

.status-dot {
  inline-size: 0.5rem;
  block-size: 0.5rem;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  flex-shrink: 0;
  animation: pulse-breathe 2s ease-in-out infinite;
}

@keyframes pulse-breathe {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(0, 64, 223, 0.4);
  }
  70% {
    transform: scale(1.05);
    box-shadow: 0 0 0 4px rgba(0, 64, 223, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(0, 64, 223, 0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .animate-fade-in-up-1 {
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.1s both;
  }
  .animate-fade-in-up-2 {
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
  }
  .animate-fade-in-up-3 {
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.3s both;
  }
  .animate-pulse-breathe {
    animation: pulse-breathe 2s infinite ease-in-out;
  }
}

/* Trial / alert banners */
.trial-banner {
  background: var(--color-warning-soft);
  border-bottom: 1px solid var(--color-warning-border);
  padding: 0.75rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  font-size: 0.875rem;
  color: var(--color-warning);
}

.paid-required-banner {
  background: var(--color-surface-container-low);
  border-bottom: 1px solid var(--color-primary-fixed);
  padding: 0.75rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  font-size: 0.875rem;
  color: var(--color-on-surface);
}

/* Terminal log (processing state) */
.terminal-log {
  background: var(--color-inverse-surface);
  color: var(--color-inverse-on-surface);
  border-radius: var(--radius-btn);
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.2);
  overflow: hidden;
}

.alert-success-light {
  background: var(--color-success-soft);
  border-color: #a7f3d0 !important;
}

.alert-error-light {
  background: #fef2f2;
  border-color: #fca5a5 !important;
}

.meta-chip {
  border-radius: var(--radius-btn);
  border: 1px solid var(--color-outline-variant);
  background: var(--color-surface-container-low);
  padding: 0.75rem 1rem;
}

.subtitle-strip {
  background: var(--color-inverse-surface);
  color: var(--color-inverse-on-surface);
  border-radius: var(--radius-btn);
  padding: 0.5rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  border-inline-start: 3px solid var(--color-primary-container);
}

.label-caps {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-on-surface-variant);
}

.i18n-en {
  display: none;
}

:lang(en) .i18n-fa {
  display: none;
}

:lang(en) .i18n-en {
  display: inline;
}

:lang(en) .i18n-en.block {
  display: block;
}

.sr-only {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Zibal trust badge (نشان اعتبار) — https://help.zibal.ir/ipg/ */
.zibal-trust {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 0;
}

.zibal-trust img {
  max-inline-size: 88px;
  block-size: auto;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .status-dot,
  .progress-fill-cinematic,
  .drop-zone-light,
  .btn-cinematic,
  .feature-card-light,
  .pricing-card,
  .animate-fade-in-up-1,
  .animate-fade-in-up-2,
  .animate-fade-in-up-3,
  .animate-pulse-breathe {
    animation: none !important;
    transition: none !important;
  }
}