/* ==========================================================================
   Material 3 CSS Variables (Light & Dark System Tokens)
   ========================================================================== */
:root {
  --transition-duration: 0.3s;
  --transition-timing: cubic-bezier(0.2, 0, 0, 1);
  font-family: 'Roboto', system-ui, -apple-system, sans-serif;

  /* Light Theme Colors */
  --md-sys-color-primary: #bc3c1a;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #ffdad2;
  --md-sys-color-on-primary-container: #410600;
  --md-sys-color-secondary: #77574e;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-surface: #fffbff;
  --md-sys-color-on-surface: #201a18;
  --md-sys-color-surface-variant: #f5ddd8;
  --md-sys-color-on-surface-variant: #534340;
  --md-sys-color-outline: #85736f;
  --md-sys-color-outline-variant: #d8c2be;
  --md-sys-color-background: #fffbff;
  --md-sys-color-on-background: #201a18;
  --md-sys-color-error: #ba1a1a;

  /* Glassmorphism overrides */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.4);
  --shadow-elevation: 0 8px 32px rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] {
  /* Dark Theme Colors */
  --md-sys-color-primary: #ffb5a0;
  --md-sys-color-on-primary: #631200;
  --md-sys-color-primary-container: #8e2303;
  --md-sys-color-on-primary-container: #ffdad2;
  --md-sys-color-secondary: #e7bdb2;
  --md-sys-color-on-secondary: #442a22;
  --md-sys-color-surface: #201a18;
  --md-sys-color-on-surface: #ede0dd;
  --md-sys-color-surface-variant: #534340;
  --md-sys-color-on-surface-variant: #d8c2be;
  --md-sys-color-outline: #a08c87;
  --md-sys-color-outline-variant: #534340;
  --md-sys-color-background: #141211;
  --md-sys-color-on-background: #ede0dd;
  --md-sys-color-error: #ffb4ab;

  /* Glassmorphism overrides (Dark) */
  --glass-bg: rgba(20, 18, 17, 0.75);
  --glass-border: rgba(255, 255, 255, 0.04);
  --shadow-elevation: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   Base Layout & Static Atmosphere Glow
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--md-sys-color-background);
  color: var(--md-sys-color-on-background);
  transition: background-color var(--transition-duration) var(--transition-timing),
  color var(--transition-duration) var(--transition-timing);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
}

/* Static ambient background glow */
.ambient-fire-glow {
  position: fixed;
  top: -15%;
  left: 50%;
  transform: translateX(-50%);
  width: 70vw;
  height: 50vh;
  background: radial-gradient(circle, rgba(188, 60, 26, 0.08) 0%, rgba(255, 181, 160, 0) 70%);
  pointer-events: none;
  z-index: -2;
  filter: blur(40px);
}

/* ==========================================================================
   Header & App Bar
   ========================================================================== */
.m3-app-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--shadow-elevation);
  transition: background-color var(--transition-duration) var(--transition-timing);
}

.app-bar-container {
  max-width: 1200px;
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.app-bar-leading {
  display: flex;
  align-items: center;
  gap: 8px;
}

.app-title {
  font-size: 1.25rem;
  font-weight: 500;
}

.app-bar-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.icon-button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--md-sys-color-on-background);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s, transform 0.15s var(--transition-timing);
  outline: none;
}

.icon-button:hover {
  background-color: var(--md-sys-color-surface-variant);
}

.icon-button:active {
  transform: scale(0.9);
}

.flame-trigger span {
  font-size: 30px;
  color: var(--md-sys-color-primary);
  transition: transform 0.2s var(--transition-timing);
}

.flame-trigger:hover span {
  transform: scale(1.1);
}

/* ==========================================================================
   Custom Material 3 Dropdown Menu
   ========================================================================== */
.m3-dropdown-wrapper {
  position: relative;
}

.m3-dropdown-btn {
  background-color: var(--md-sys-color-surface-variant);
  color: var(--md-sys-color-on-surface-variant);
  border: none;
  border-radius: 20px;
  padding: 0 16px;
  height: 40px;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-family: inherit;
  font-weight: 500;
  transition: background-color 0.2s, transform 0.15s;
}

.m3-dropdown-btn:hover {
  background-color: rgba(216, 194, 190, 0.6);
}

.m3-dropdown-btn:active {
  transform: scale(0.97);
}

.dropdown-arrow {
  font-size: 18px;
  transition: transform 0.2s var(--transition-timing);
}

.m3-dropdown-btn[aria-expanded="true"] .dropdown-arrow {
  transform: rotate(180deg);
}

.m3-dropdown-menu {
  position: absolute;
  top: 48px;
  right: 0;
  background-color: var(--md-sys-color-surface);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: 16px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.1);
  list-style: none;
  padding: 8px 0;
  min-width: 150px;
  z-index: 120;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.95);
  transform-origin: top right;
  transition: opacity 0.15s, transform 0.15s, visibility 0.15s;
}

.m3-dropdown-menu.show {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.m3-dropdown-menu li {
  padding: 10px 20px;
  font-weight: 500;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background-color 0.15s, color 0.15s;
}

.m3-dropdown-menu li:hover {
  background-color: var(--md-sys-color-surface-variant);
  color: var(--md-sys-color-primary);
}

/* ==========================================================================
   Localization Phase Transitions
   ========================================================================== */
[data-i18n], #current-lang-label {
  transition: opacity 0.1s var(--transition-timing);
}

.i18n-fade {
  opacity: 0 !important;
}

/* ==========================================================================
   Hero Section & Actions
   ========================================================================== */
.hero-section {
  text-align: center;
  max-width: 800px;
  margin: 60px auto 40px auto;
  padding: 0 24px;
}

.hero-logo-container {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  background-color: var(--md-sys-color-primary-container);
  border-radius: 32px;
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: 0 8px 24px rgba(188, 60, 26, 0.1);
  transition: transform 0.2s var(--transition-timing);
}

.hero-logo-container:hover {
  transform: scale(1.05);
}

.hero-flame-icon {
  font-size: 72px;
  color: var(--md-sys-color-primary);
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--md-sys-color-primary), var(--md-sys-color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--md-sys-color-on-surface-variant);
}

.hero-actions {
  margin-top: 28px;
  display: flex;
  justify-content: center;
}

.download-btn {
  height: 48px;
  border-radius: 24px;
  padding: 0 32px;
  font-size: 0.95rem;
  box-shadow: 0 4px 16px rgba(188, 60, 26, 0.1);
  cursor: pointer;
  text-decoration: none;
}

.download-btn:hover {
  box-shadow: 0 6px 20px rgba(188, 60, 26, 0.15);
}

.download-btn:active {
  transform: scale(0.97);
}

/* ==========================================================================
   Cards Grid Setup
   ========================================================================== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  max-width: 900px;
  margin: 0 auto 80px auto;
  padding: 0 24px;
}

.m3-card {
  text-decoration: none;
  border-radius: 28px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 250px;
  border: 1px solid var(--md-sys-color-outline-variant);
  position: relative;
  overflow: hidden;
}

.active-card {
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s, transform 0.2s var(--transition-timing), box-shadow 0.2s var(--transition-timing);
}

.active-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(188, 60, 26, 0.1);
  border-color: var(--md-sys-color-primary);
}

/* Card Visual Details */
.card-icon-wrapper {
  background-color: var(--md-sys-color-primary-container);
  width: 48px;
  height: 48px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  transition: transform 0.2s var(--transition-timing);
}

.card-icon-wrapper span {
  color: var(--md-sys-color-primary);
  font-size: 28px;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 8px;
}

.card-desc {
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: 24px;
}

/* --------------------------------------------------------------------------
   Disabled Style (Flame Tools Preview) - Static, Non-clickable
   -------------------------------------------------------------------------- */
.disabled-card {
  background-color: var(--md-sys-color-surface-variant);
  opacity: 0.7;
  filter: grayscale(80%);
  border-color: var(--md-sys-color-outline-variant);
  cursor: not-allowed;
  transform: translateY(0) scale(1) !important;
  transition: opacity 0.3s var(--transition-timing);
}

.disabled-card:hover {
  transform: translateY(0) scale(1) !important;
  border-color: var(--md-sys-color-outline-variant) !important;
  box-shadow: none !important;
  opacity: 0.7 !important;
  filter: grayscale(80%) !important;
}

.disabled-card:hover .card-icon-wrapper {
  transform: none !important;
}

.disabled-card .card-icon-wrapper {
  background-color: var(--md-sys-color-outline-variant);
}

.disabled-card .card-icon-wrapper span {
  color: var(--md-sys-color-on-surface-variant);
}

/* Buttons */
.m3-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 24px;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
  border: none;
  cursor: inherit;
  transition: background-color 0.2s, transform 0.15s, box-shadow 0.2s;
  text-decoration: none;
}

.active-card .m3-button {
  cursor: pointer;
}

.active-card .m3-button:active {
  transform: scale(0.97);
}

.filled-button {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.filled-button:hover {
  background-color: rgba(188, 60, 26, 0.9);
}

.tonal-button {
  background-color: var(--md-sys-color-secondary);
  color: var(--md-sys-color-on-secondary);
}

.text-button {
  background: transparent;
  color: var(--md-sys-color-primary);
  cursor: pointer;
}

.text-button:hover {
  background-color: rgba(188, 60, 26, 0.08);
}

/* ==========================================================================
   Material 3 Native Dialog & Dynamic Bounce Entrance
   ========================================================================== */
.m3-dialog {
  border: none;
  border-radius: 28px;
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  box-shadow: 0 24px 48px rgba(0,0,0,0.15);
  margin: auto;
  max-width: 420px;
  width: 90%;
  padding: 28px;
  outline: none;
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.m3-dialog::backdrop {
  background-color: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.m3-dialog[open] {
  opacity: 1;
  transform: scale(1);
}

.m3-dialog[open]::backdrop {
  opacity: 1;
}

/* Spring bounce animation for under development preview state */
.m3-dialog.dev-preview-bounce[open] {
  animation: spring-pop-in 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes spring-pop-in {
  0% {
    transform: scale(0.8) translateY(30px);
    opacity: 0;
  }
  55% {
    transform: scale(1.04) translateY(-5px);
  }
  80% {
    transform: scale(0.98) translateY(2px);
  }
  100% {
    transform: scale(1) translateY(0);
    opacity: 1;
  }
}

.dialog-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.dialog-icon-container {
  background-color: var(--md-sys-color-primary-container);
  padding: 16px;
  border-radius: 20px;
  margin-bottom: 20px;
}

.dialog-icon {
  font-size: 36px;
  color: var(--md-sys-color-primary);
  display: block;
}

.dialog-title {
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: 12px;
}

.dialog-body {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: 28px;
  white-space: pre-line;
}

.dialog-actions {
  width: 100%;
  display: flex;
  justify-content: flex-end;
}