/* style.css — Prompt Master Design Tokens & Components */

/* ===== FONTS ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Playfair+Display:wght@400;500;600;700&display=swap');

:root {
  --font-body: 'Inter', system-ui, sans-serif;
  --font-display: 'Playfair Display', Georgia, serif;

  /* ===== TYPE SCALE ===== */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.9rem  + 0.5vw,  1.125rem);
  --text-lg:   clamp(1.125rem, 0.95rem + 0.85vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1rem    + 1.5vw,  2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);

  /* ===== SPACING (4px base) ===== */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* ===== RADIUS ===== */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;
  --radius-full: 9999px;

  /* ===== TRANSITIONS ===== */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-golden: cubic-bezier(0.16, 1, 0.3, 1);

  /* ===== CONTENT WIDTHS ===== */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --sidebar-width: 260px;
  --sidebar-collapsed: 0px;
}

/* ===== LIGHT MODE ===== */
:root, [data-theme="light"] {
  /* Surfaces — warm cream/beige */
  --color-bg:             #faf8f5;
  --color-surface:        #ffffff;
  --color-surface-2:      #f5f2ed;
  --color-surface-offset: #efe9e1;
  --color-surface-offset-2: #e8e0d6;
  --color-surface-dynamic: #ddd5cb;
  --color-divider:        #e2dbd3;
  --color-border:         #d6cec4;

  /* Text */
  --color-text:           #2c2418;
  --color-text-muted:     #8a7e72;
  --color-text-faint:     #bdb3a7;
  --color-text-inverse:   #ffffff;

  /* Primary accent — warm teal */
  --color-primary:        #1a8a8a;
  --color-primary-hover:  #147070;
  --color-primary-active: #0e5656;
  --color-primary-highlight: #d5edeb;
  --color-primary-subtle: #e8f5f4;

  /* Warm accents for background gradients */
  --color-peach:          #fde8d8;
  --color-peach-subtle:   #fef4ed;
  --color-coral:          #f9d0b8;

  /* Semantic */
  --color-success:        #3a8a42;
  --color-error:          #c4443a;
  --color-warning:        #c47a1a;

  /* Shadows */
  --shadow-sm: 0 1px 3px oklch(0.2 0.02 60 / 0.06);
  --shadow-md: 0 4px 16px oklch(0.2 0.02 60 / 0.08);
  --shadow-lg: 0 12px 40px oklch(0.2 0.02 60 / 0.12);
  --shadow-card: 0 2px 8px oklch(0.2 0.02 60 / 0.06), 0 0 0 1px oklch(0.2 0.02 60 / 0.04);
  --shadow-card-hover: 0 8px 24px oklch(0.2 0.02 60 / 0.1), 0 0 0 1px oklch(0.2 0.02 60 / 0.06);
}

/* ===== DARK MODE ===== */
[data-theme="dark"] {
  --color-bg:             #1a1816;
  --color-surface:        #242120;
  --color-surface-2:      #2e2a28;
  --color-surface-offset: #1f1d1b;
  --color-surface-offset-2: #353230;
  --color-surface-dynamic: #3a3735;
  --color-divider:        #3a3735;
  --color-border:         #4a4644;

  --color-text:           #e8e0d6;
  --color-text-muted:     #9a9088;
  --color-text-faint:     #6a6260;
  --color-text-inverse:   #1a1816;

  --color-primary:        #3ebebe;
  --color-primary-hover:  #2da0a0;
  --color-primary-active: #228585;
  --color-primary-highlight: #2a3a3a;
  --color-primary-subtle: #1e2e2e;

  --color-peach:          #3a2e24;
  --color-peach-subtle:   #2a2420;
  --color-coral:          #4a3830;

  --color-success:        #5aaa62;
  --color-error:          #e06a60;
  --color-warning:        #e0a040;

  --shadow-sm: 0 1px 3px oklch(0 0 0 / 0.2);
  --shadow-md: 0 4px 16px oklch(0 0 0 / 0.3);
  --shadow-lg: 0 12px 40px oklch(0 0 0 / 0.4);
  --shadow-card: 0 2px 8px oklch(0 0 0 / 0.2), 0 0 0 1px oklch(0 0 0 / 0.1);
  --shadow-card-hover: 0 8px 24px oklch(0 0 0 / 0.3), 0 0 0 1px oklch(0 0 0 / 0.15);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #1a1816;
    --color-surface:        #242120;
    --color-surface-2:      #2e2a28;
    --color-surface-offset: #1f1d1b;
    --color-surface-offset-2: #353230;
    --color-surface-dynamic: #3a3735;
    --color-divider:        #3a3735;
    --color-border:         #4a4644;
    --color-text:           #e8e0d6;
    --color-text-muted:     #9a9088;
    --color-text-faint:     #6a6260;
    --color-text-inverse:   #1a1816;
    --color-primary:        #3ebebe;
    --color-primary-hover:  #2da0a0;
    --color-primary-active: #228585;
    --color-primary-highlight: #2a3a3a;
    --color-primary-subtle: #1e2e2e;
    --color-peach:          #3a2e24;
    --color-peach-subtle:   #2a2420;
    --color-coral:          #4a3830;
    --color-success:        #5aaa62;
    --color-error:          #e06a60;
    --color-warning:        #e0a040;
    --shadow-sm: 0 1px 3px oklch(0 0 0 / 0.2);
    --shadow-md: 0 4px 16px oklch(0 0 0 / 0.3);
    --shadow-lg: 0 12px 40px oklch(0 0 0 / 0.4);
    --shadow-card: 0 2px 8px oklch(0 0 0 / 0.2), 0 0 0 1px oklch(0 0 0 / 0.1);
    --shadow-card-hover: 0 8px 24px oklch(0 0 0 / 0.3), 0 0 0 1px oklch(0 0 0 / 0.15);
  }
}

/* ===== LAYOUT ===== */
.app-layout {
  display: flex;
  min-height: 100dvh;
}

.sidebar {
  width: var(--sidebar-width);
  background: var(--color-surface);
  border-right: 1px solid var(--color-divider);
  display: flex;
  flex-direction: column;
  padding: var(--space-4);
  gap: var(--space-3);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform 0.3s var(--ease-golden);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-2);
}

.sidebar-brand svg {
  flex-shrink: 0;
}

.sidebar-brand-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
  line-height: 1;
}

.sidebar-new-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-lg);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  transition: background var(--transition-interactive), transform var(--transition-interactive);
  width: 100%;
}

.sidebar-new-btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.sidebar-new-btn:active {
  background: var(--color-primary-active);
  transform: translateY(0);
}

.sidebar-section-title {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-3) var(--space-2) var(--space-1);
  font-weight: 600;
}

.sidebar-history {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.sidebar-history-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background var(--transition-interactive), color var(--transition-interactive);
  text-align: left;
  width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-history-item:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

.sidebar-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2);
  border-top: 1px solid var(--color-divider);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: background var(--transition-interactive), color var(--transition-interactive);
}

.theme-toggle:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

/* Mobile sidebar overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: oklch(0 0 0 / 0.4);
  z-index: 99;
  opacity: 0;
  transition: opacity 0.3s var(--ease-golden);
}

.sidebar-overlay.active {
  opacity: 1;
}

/* Main content */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  transition: margin-left 0.3s var(--ease-golden);
}

/* Mobile header */
.mobile-header {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface);
}

.hamburger-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  color: var(--color-text);
  transition: background var(--transition-interactive);
}

.hamburger-btn:hover {
  background: var(--color-surface-2);
}

/* ===== HERO SECTION ===== */
.hero-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  padding: var(--space-8) var(--space-4);
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
  position: relative;
}

.hero-section.has-output {
  justify-content: flex-start;
  padding-top: var(--space-6);
}

.hero-title {
  font-family: var(--font-body);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  text-align: center;
  margin-bottom: var(--space-2);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.hero-title-accent {
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
  margin-bottom: var(--space-8);
}

/* ===== INPUT CARD ===== */
.input-card {
  width: 100%;
  background: var(--color-surface);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-divider);
  overflow: hidden;
  transition: box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}

.input-card:focus-within {
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-primary);
}

.input-textarea {
  width: 100%;
  min-height: 120px;
  max-height: 300px;
  padding: var(--space-5) var(--space-5) var(--space-3);
  border: none;
  resize: none;
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-text);
  background: transparent;
  font-family: var(--font-body);
}

.input-textarea::placeholder {
  color: var(--color-text-faint);
}

.input-textarea:focus {
  outline: none;
}

.input-controls {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-divider);
  flex-wrap: wrap;
}

.control-select {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background var(--transition-interactive), color var(--transition-interactive);
  border: 1px solid transparent;
  appearance: none;
  -webkit-appearance: none;
  font-family: var(--font-body);
  padding-right: var(--space-6);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238a7e72' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
}

.control-select:hover {
  background: var(--color-surface-offset);
  color: var(--color-text);
}

.control-select:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* Creativity pills */
.creativity-group {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  background: var(--color-surface-2);
  border-radius: var(--radius-full);
  padding: var(--space-1);
}

.creativity-pill {
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  transition: all var(--transition-interactive);
  white-space: nowrap;
}

.creativity-pill:hover {
  color: var(--color-text);
}

.creativity-pill.active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.input-controls-right {
  margin-left: auto;
}

.send-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  transition: background var(--transition-interactive), transform var(--transition-interactive);
}

.send-btn:hover {
  background: var(--color-primary-hover);
  transform: scale(1.05);
}

.send-btn:active {
  background: var(--color-primary-active);
  transform: scale(0.95);
}

.send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* ===== RULES TOGGLES ===== */
.rules-section {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-3);
  flex-wrap: wrap;
  width: 100%;
  justify-content: center;
}

.rule-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  transition: all var(--transition-interactive);
  white-space: nowrap;
}

.rule-toggle:hover {
  border-color: var(--color-primary);
  color: var(--color-text);
}

.rule-toggle.active {
  background: var(--color-primary-subtle);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.rule-toggle-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-text-faint);
  transition: background var(--transition-interactive);
}

.rule-toggle.active .rule-toggle-dot {
  background: var(--color-primary);
}

/* ===== OUTPUT CARD ===== */
.output-section {
  width: 100%;
  margin-top: var(--space-6);
  animation: fadeIn 0.4s var(--ease-golden);
}

.output-card {
  background: var(--color-surface);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-divider);
  overflow: hidden;
}

.output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  border-bottom: 1px solid var(--color-divider);
}

.output-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.copy-btn {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  transition: all var(--transition-interactive);
}

.copy-btn:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

.copy-btn.copied {
  color: var(--color-success);
}

.output-body {
  padding: var(--space-5);
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--color-text);
  white-space: pre-wrap;
  word-break: break-word;
}

.output-tips {
  padding: var(--space-3) var(--space-5) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.output-tip {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  background: var(--color-primary-subtle);
  border-radius: var(--radius-md);
  line-height: 1.5;
}

.output-tip-icon {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: var(--color-primary);
  margin-top: 1px;
}

/* ===== SKELETON LOADER ===== */
.skeleton-loader {
  width: 100%;
  padding: var(--space-5);
}

.skeleton-line {
  height: 14px;
  background: linear-gradient(90deg, var(--color-surface-2) 25%, var(--color-surface-offset) 50%, var(--color-surface-2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite linear;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-2);
}

.skeleton-line:nth-child(1) { width: 100%; }
.skeleton-line:nth-child(2) { width: 90%; }
.skeleton-line:nth-child(3) { width: 95%; }
.skeleton-line:nth-child(4) { width: 70%; }
.skeleton-line:nth-child(5) { width: 85%; }
.skeleton-line:nth-child(6) { width: 40%; }

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ===== DISCOVERY SECTION ===== */
.discovery-section {
  padding: var(--space-8) var(--space-4) var(--space-12);
  max-width: var(--content-wide);
  margin: 0 auto;
  width: 100%;
}

.discovery-title {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  letter-spacing: -0.01em;
}

.discovery-tabs {
  display: flex;
  gap: var(--space-1);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.discovery-tab {
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  transition: all var(--transition-interactive);
  white-space: nowrap;
  font-weight: 500;
}

.discovery-tab:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

.discovery-tab.active {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.template-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-4);
}

.template-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  cursor: pointer;
  transition: all var(--transition-interactive);
}

.template-card:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.template-card:active {
  transform: translateY(0);
}

.template-icon {
  font-size: 1.5rem;
  margin-bottom: var(--space-3);
  line-height: 1;
}

.template-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.template-desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ===== FOOTER ===== */
.app-footer {
  text-align: center;
  padding: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  border-top: 1px solid var(--color-divider);
}

.app-footer a {
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.app-footer a:hover {
  color: var(--color-text-muted);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-overlay.active {
    display: block;
  }

  .main-content {
    margin-left: 0;
  }

  .mobile-header {
    display: flex;
  }

  .hero-section {
    padding: var(--space-4) var(--space-4);
  }

  .hero-title {
    font-size: var(--text-xl);
  }

  .input-controls {
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
  }

  .creativity-group {
    order: -1;
    width: 100%;
    justify-content: center;
  }

  .rules-section {
    gap: var(--space-1);
  }

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

  .discovery-section {
    padding: var(--space-6) var(--space-4) var(--space-8);
  }
}

@media (max-width: 480px) {
  .input-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .input-controls-right {
    margin-left: 0;
    display: flex;
    justify-content: flex-end;
  }

  .control-select {
    width: 100%;
  }
}

/* ===== PRICING SECTION ===== */
.pricing-section {
  padding: var(--space-12) var(--space-4) var(--space-8);
  max-width: var(--content-wide);
  margin: 0 auto;
  width: 100%;
  border-top: 1px solid var(--color-divider);
}

.pricing-header {
  text-align: center;
  margin-bottom: var(--space-4);
}

.pricing-title {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
  margin-bottom: var(--space-2);
}

.pricing-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.pricing-free-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin: 0 auto var(--space-8);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary-subtle);
  border: 1px solid var(--color-primary-highlight);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--color-primary);
  width: fit-content;
  font-weight: 500;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.pricing-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-interactive);
}

.pricing-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.pricing-card-popular {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary), var(--shadow-md);
}

.pricing-card-deal {
  border-color: var(--color-warning, #c47a1a);
  background: linear-gradient(to bottom, var(--color-peach-subtle), var(--color-surface));
}

.pricing-badge {
  position: absolute;
  top: calc(var(--space-3) * -1);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  white-space: nowrap;
}

.pricing-badge-deal {
  background: var(--color-warning, #c47a1a);
}

.pricing-card-header {
  margin-bottom: var(--space-4);
}

.pricing-plan-icon {
  font-size: 1.75rem;
  line-height: 1;
  display: block;
  margin-bottom: var(--space-2);
}

.pricing-plan-name {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.pricing-plan-desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.pricing-amount {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  margin-bottom: var(--space-1);
}

.pricing-price {
  font-size: clamp(2rem, 1rem + 3vw, 3rem);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.03em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.pricing-currency {
  font-size: 0.5em;
  font-weight: 600;
  color: var(--color-text-muted);
  vertical-align: super;
}

.pricing-currency-k {
  font-size: 0.55em;
  font-weight: 700;
  color: var(--color-text-muted);
}

.pricing-period {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.pricing-original {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.pricing-strike {
  text-decoration: line-through;
  color: var(--color-text-faint);
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  flex: 1;
}

.pricing-feature {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text);
  line-height: 1.5;
}

.pricing-feature svg {
  flex-shrink: 0;
}

.pricing-feature.disabled {
  color: var(--color-text-faint);
}

.pricing-btn {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 600;
  text-align: center;
  transition: all var(--transition-interactive);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.pricing-btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.pricing-btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.pricing-btn-primary:active {
  background: var(--color-primary-active);
  transform: translateY(0);
}

.pricing-btn-outline {
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  border: 1px solid var(--color-divider);
}

.pricing-btn-outline:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* How to Pay Steps */
.pricing-how {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}

.pricing-how-title {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  text-align: center;
  margin-bottom: var(--space-5);
}

.pricing-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.pricing-step {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
  min-width: 180px;
}

.pricing-step-num {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: 700;
  flex-shrink: 0;
}

.pricing-step-text {
  font-size: var(--text-xs);
  color: var(--color-text);
  line-height: 1.5;
}

.pricing-step-arrow {
  color: var(--color-text-faint);
  flex-shrink: 0;
}

/* ===== PAYMENT MODAL ===== */
.payment-modal-overlay {
  position: fixed;
  inset: 0;
  background: oklch(0 0 0 / 0.5);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  animation: fadeIn 0.25s var(--ease-golden);
}

.payment-modal {
  background: var(--color-surface);
  border-radius: var(--radius-2xl);
  width: 100%;
  max-width: 420px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.3s var(--ease-golden);
}

.payment-modal-close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: all var(--transition-interactive);
  z-index: 1;
}

.payment-modal-close:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

.payment-modal-header {
  padding: var(--space-5) var(--space-5) var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.payment-modal-title {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
}

.payment-plan-tag {
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 600;
}

.payment-modal-body {
  padding: 0 var(--space-5) var(--space-5);
}

.payment-amount-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-primary-subtle);
  border: 1px solid var(--color-primary-highlight);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
}

.payment-amount-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.payment-amount-value {
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.payment-bank-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.payment-bank-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-divider);
}

.payment-bank-row:last-child {
  border-bottom: none;
}

.payment-bank-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.payment-bank-value {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.payment-bank-account {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-variant-numeric: tabular-nums;
}

.payment-copy-stk {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  transition: all var(--transition-interactive);
}

.payment-copy-stk:hover {
  background: var(--color-surface-2);
  color: var(--color-primary);
}

.payment-bank-content {
  color: var(--color-primary);
  font-weight: 700;
}

.payment-qr {
  text-align: center;
  margin-bottom: var(--space-4);
}

.payment-qr-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.payment-qr-img {
  width: 100%;
  max-width: 280px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-divider);
}

.payment-zalo-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: #0068FF;
  color: #ffffff;
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-interactive);
  margin-bottom: var(--space-3);
}

.payment-zalo-btn:hover {
  background: #0050cc;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px oklch(0.3 0.15 260 / 0.3);
}

.payment-zalo-btn:active {
  transform: translateY(0);
}

.payment-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-align: center;
  line-height: 1.6;
}

/* Pricing sidebar link */
.sidebar-pricing-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-subtle);
  border: 1px solid var(--color-primary-highlight);
  transition: all var(--transition-interactive);
  width: 100%;
}

.sidebar-pricing-btn:hover {
  background: var(--color-primary-highlight);
}

/* Pricing responsive */
@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .pricing-steps {
    flex-direction: column;
    align-items: stretch;
  }

  .pricing-step-arrow {
    display: none;
  }

  .pricing-step {
    min-width: auto;
  }

  .pricing-section {
    padding: var(--space-8) var(--space-4) var(--space-6);
  }
}

/* Background gradient decoration */
.bg-gradient {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(ellipse 60% 50% at 20% 0%, var(--color-peach-subtle) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 80% 10%, var(--color-peach) 0%, transparent 60%);
  opacity: 0.6;
}

/* ===== ZALO FLOATING ACTION BUTTON ===== */
.zalo-fab {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 900;
  display: flex;
  align-items: center;
  gap: 0;
  text-decoration: none;
  cursor: pointer;
  /* The ring pulse */
  border-radius: var(--radius-full);
}

.zalo-fab-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  object-fit: cover;
  box-shadow:
    0 4px 14px oklch(0.4 0.2 260 / 0.3),
    0 0 0 0 oklch(0.55 0.2 260 / 0.4);
  transition: transform 0.25s var(--ease-golden), box-shadow 0.25s var(--ease-golden);
  animation: zaloPulse 2.5s infinite;
  flex-shrink: 0;
}

.zalo-fab:hover .zalo-fab-icon {
  transform: scale(1.1);
  box-shadow:
    0 6px 20px oklch(0.4 0.2 260 / 0.4),
    0 0 0 0 oklch(0.55 0.2 260 / 0);
  animation: none;
}

.zalo-fab:active .zalo-fab-icon {
  transform: scale(0.95);
}

/* Tooltip */
.zalo-fab-tooltip {
  position: absolute;
  right: calc(100% + var(--space-3));
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-surface);
  color: var(--color-text);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: 600;
  white-space: nowrap;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-divider);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s var(--ease-golden), transform 0.2s var(--ease-golden);
  transform: translateY(-50%) translateX(4px);
}

.zalo-fab:hover .zalo-fab-tooltip {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

/* Pulse animation */
@keyframes zaloPulse {
  0%, 100% {
    box-shadow:
      0 4px 14px oklch(0.4 0.2 260 / 0.3),
      0 0 0 0 oklch(0.55 0.2 260 / 0.4);
  }
  50% {
    box-shadow:
      0 4px 14px oklch(0.4 0.2 260 / 0.3),
      0 0 0 10px oklch(0.55 0.2 260 / 0);
  }
}

@media (max-width: 768px) {
  .zalo-fab {
    bottom: var(--space-4);
    right: var(--space-4);
  }

  .zalo-fab-icon {
    width: 48px;
    height: 48px;
  }

  .zalo-fab-tooltip {
    display: none;
  }
}