/* ============================================================
   PROMPTOPIA — Design System v2.0 (AI-Native)
   Modern, dual-theme (light/dark) CSS with CSS Custom Properties
   Palette: Violet Neon + Cyan Tech + Deep Dark
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* ============================================================
   1. DESIGN TOKENS — Custom Properties (Light / Dark)
   ============================================================ */
:root,
[data-bs-theme="light"] {
    /* Brand Colors — AI-Native Palette */
    --dark-blue: #104c91;
    --light-blue: #1f8ac0;
    --beige-accent: #efc9af;

    /* Neon Accent Colors */
    --pt-neon-violet: #8B5CF6;
    --pt-neon-violet-hover: #A78BFA;
    --pt-neon-violet-glow: rgba(139, 92, 246, 0.25);
    --pt-neon-cyan: #06B6D4;
    --pt-neon-cyan-hover: #22D3EE;
    --pt-neon-cyan-glow: rgba(6, 182, 212, 0.2);
    --pt-neon-magenta: #D946EF;
    --pt-neon-emerald: #10B981;
    --pt-neon-amber: #F59E0B;

    /* Surfaces */
    --pt-bg-primary: #f5f7fa;
    --pt-bg-secondary: #ffffff;
    --pt-bg-tertiary: #eef1f6;
    --pt-surface: #ffffff;
    --pt-surface-hover: #f0f2f5;

    /* Text */
    --pt-text-primary: #1a1a2e;
    --pt-text-secondary: #5a6272;
    --pt-text-muted: #8a92a1;

    /* Borders */
    --pt-border: #e2e6ec;
    --pt-border-subtle: #eef1f6;

    /* Navbar */
    --pt-navbar-bg: rgba(255, 255, 255, 0.82);
    --pt-navbar-border: rgba(0, 0, 0, 0.06);

    /* Cards */
    --pt-card-bg: #ffffff;
    --pt-card-header-bg: var(--beige-accent);
    --pt-card-footer-bg: #f8f9fb;

    /* Footer */
    --pt-footer-bg: #0a0a0f;
    --pt-footer-text: #9ca3af;

    /* Shadows */
    --pt-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --pt-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    --pt-shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
    --pt-shadow-glow: 0 0 30px rgba(139, 92, 246, 0.12);

    /* Gradients */
    --pt-gradient-brand: linear-gradient(135deg, #8B5CF6 0%, #06B6D4 100%);
    --pt-gradient-hero: linear-gradient(135deg, #eef4fb 0%, #f5f7fa 40%, #f3eeff 100%);
    --pt-gradient-cta: linear-gradient(135deg, #8B5CF6 0%, #7C3AED 50%, #6D28D9 100%);
    --pt-gradient-text: linear-gradient(135deg, #8B5CF6, #06B6D4);

    /* Section alternation */
    --pt-section-alt: #f0f4f8;
    --pt-section-base: #ffffff;

    /* Spacing tokens (multiples of 4) */
    --pt-space-1: 4px;
    --pt-space-2: 8px;
    --pt-space-3: 12px;
    --pt-space-4: 16px;
    --pt-space-6: 24px;
    --pt-space-8: 32px;
    --pt-space-12: 48px;
    --pt-space-16: 64px;

    /* Misc */
    --pt-radius: 12px;
    --pt-radius-lg: 16px;
    --pt-radius-pill: 9999px;
    --pt-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-bs-theme="dark"] {
    --dark-blue: #A78BFA;
    --light-blue: #22D3EE;
    --beige-accent: #8c7465;

    /* Neon accents adjust for dark bg */
    --pt-neon-violet: #A78BFA;
    --pt-neon-violet-hover: #C4B5FD;
    --pt-neon-violet-glow: rgba(167, 139, 250, 0.3);
    --pt-neon-cyan: #22D3EE;
    --pt-neon-cyan-hover: #67E8F9;
    --pt-neon-cyan-glow: rgba(34, 211, 238, 0.25);

    /* Deep dark surfaces */
    --pt-bg-primary: #0A0A0B;
    --pt-bg-secondary: #121214;
    --pt-bg-tertiary: #1A1A1F;
    --pt-surface: #161618;
    --pt-surface-hover: #222226;

    --pt-text-primary: #E4E4E7;
    --pt-text-secondary: #A1A1AA;
    --pt-text-muted: #71717A;

    --pt-border: rgba(255, 255, 255, 0.06);
    --pt-border-subtle: rgba(255, 255, 255, 0.03);

    --pt-navbar-bg: rgba(10, 10, 11, 0.80);
    --pt-navbar-border: rgba(255, 255, 255, 0.06);

    --pt-card-bg: #161618;
    --pt-card-header-bg: #1E1E22;
    --pt-card-footer-bg: #121214;

    --pt-footer-bg: #050506;
    --pt-footer-text: #71717A;

    --pt-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --pt-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    --pt-shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.6);
    --pt-shadow-glow: 0 0 30px rgba(139, 92, 246, 0.15);

    --pt-gradient-brand: linear-gradient(135deg, #8B5CF6 0%, #06B6D4 100%);
    --pt-gradient-hero: linear-gradient(135deg, #0A0A0B 0%, #0F0A1A 40%, #0A1015 100%);
    --pt-gradient-cta: linear-gradient(135deg, #7C3AED 0%, #8B5CF6 50%, #A78BFA 100%);
    --pt-gradient-text: linear-gradient(135deg, #A78BFA, #22D3EE);

    --pt-section-alt: #0E0E10;
    --pt-section-base: #0A0A0B;
}

/* ============================================================
   2. BASE STYLES
   ============================================================ */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--pt-bg-primary);
    color: var(--pt-text-primary);
    display: flex !important;
    flex-direction: column !important;
    min-height: 100vh !important;
    transition: background-color var(--pt-transition), color var(--pt-transition);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', 'Outfit', 'Inter', sans-serif;
    font-weight: 700;
    color: var(--pt-text-primary);
    letter-spacing: -0.02em;
}

a {
    transition: color var(--pt-transition);
}

::selection {
    background-color: var(--light-blue);
    color: #fff;
}

/* ============================================================
   3. NAVBAR — Glassmorphism + sticky
   ============================================================ */
.navbar-main {
    background: var(--pt-navbar-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--pt-navbar-border);
    border-top: none;
    border-radius: 0 0 var(--pt-radius-lg) var(--pt-radius-lg);
    transition: background var(--pt-transition), box-shadow var(--pt-transition);
    padding: 0.6rem 0;
    margin: 0 auto;
    max-width: 100%;
    box-shadow: var(--pt-shadow-sm);
}

@media (min-width: 992px) {
    .navbar-main {
        margin: var(--pt-space-3) auto 0;
        max-width: calc(100% - 32px);
        border: 1px solid var(--pt-navbar-border);
        border-radius: var(--pt-radius-lg);
    }
}

.navbar-main .navbar-brand {
    font-family: 'Space Grotesk', 'Outfit', sans-serif;
    font-weight: 700;
    color: var(--pt-text-primary);
    letter-spacing: -0.02em;
}

.navbar-main .nav-link,
.navbar-main .dropdown-toggle {
    color: var(--pt-text-secondary);
    font-weight: 500;
    transition: color var(--pt-transition);
}

.navbar-main .nav-link:hover,
.navbar-main .dropdown-toggle:hover {
    color: var(--light-blue);
}

.navbar-main .navbar-toggler {
    border-color: var(--pt-border);
}

.navbar-main .navbar-toggler-icon {
    filter: var(--bs-navbar-toggler-icon-bg, none);
}

[data-bs-theme="dark"] .navbar-toggler-icon {
    filter: invert(1);
}

/* ============================================================
   4. BRAND BUTTONS
   ============================================================ */
.btn-primary {
    background: var(--pt-gradient-cta);
    border: none;
    font-weight: 600;
    letter-spacing: 0.01em;
    transition: transform var(--pt-transition), box-shadow var(--pt-transition), filter var(--pt-transition);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--pt-neon-violet-glow);
    filter: brightness(1.1);
    background: var(--pt-gradient-cta);
}

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

.btn-secondary {
    background-color: var(--light-blue);
    border-color: var(--light-blue);
    font-weight: 600;
    transition: transform var(--pt-transition), box-shadow var(--pt-transition);
}

.btn-secondary:hover {
    background-color: #1a72a1;
    border-color: #1a72a1;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(31, 138, 192, 0.25);
}

.btn-outline-primary {
    border-color: var(--dark-blue);
    color: var(--dark-blue);
    font-weight: 600;
    transition: all var(--pt-transition);
}

.btn-outline-primary:hover {
    background: var(--pt-gradient-cta);
    border-color: transparent;
    transform: translateY(-1px);
}

/* ============================================================
   5. HERO SECTION
   ============================================================ */
.hero-section {
    background: var(--pt-gradient-hero);
    position: relative;
    overflow: hidden;
    padding: 5rem 0 4rem;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(31, 138, 192, 0.07) 0%, transparent 50%),
                radial-gradient(circle at 70% 80%, rgba(239, 201, 175, 0.06) 0%, transparent 50%);
    animation: heroFloat 20s ease-in-out infinite;
    pointer-events: none;
}

@keyframes heroFloat {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-2%, 1%); }
}

.hero-section h1 {
    font-family: 'Space Grotesk', 'Outfit', sans-serif;
    font-weight: 700;
    font-size: clamp(2rem, 5vw, 3.2rem);
    color: var(--pt-text-primary);
    line-height: 1.15;
    letter-spacing: -0.03em;
}

.hero-section .lead {
    color: var(--pt-text-secondary);
    font-size: 1.15rem;
    line-height: 1.7;
}

.section-title {
    color: var(--pt-text-primary);
    font-weight: 700;
    position: relative;
}

/* ============================================================
   6. CARDS — Modern elevated cards
   ============================================================ */
.prompt-card {
    background: var(--pt-card-bg);
    border: 1px solid var(--pt-border);
    border-radius: var(--pt-radius-lg);
    overflow: hidden;
    transition: transform var(--pt-transition), box-shadow var(--pt-transition), border-color var(--pt-transition);
    box-shadow: var(--pt-shadow-sm);
}

.prompt-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--pt-shadow-lg);
    border-color: var(--light-blue);
}

.prompt-card .card-header {
    background-color: var(--pt-card-header-bg);
    border-bottom: 1px solid var(--pt-border);
    padding: 0.75rem 1rem;
}

.prompt-card .card-body {
    padding: 1.25rem;
}

.prompt-card .card-footer {
    background-color: var(--pt-card-footer-bg);
    border-top: 1px solid var(--pt-border-subtle);
    padding: 0.75rem 1rem;
}

.prompt-card .card-title {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    color: var(--pt-text-primary);
}

.prompt-card .card-img-top {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.prompt-card:hover .card-img-top {
    transform: scale(1.04);
}

/* Generic card overrides for dark mode */
.card {
    background-color: var(--pt-card-bg);
    border-color: var(--pt-border);
    color: var(--pt-text-primary);
}

.card-header {
    background-color: var(--pt-card-footer-bg);
    border-bottom-color: var(--pt-border);
}

.list-group-item {
    background-color: var(--pt-card-bg);
    border-color: var(--pt-border);
    color: var(--pt-text-primary);
}

/* ============================================================
   7. SECTIONS — Alternating backgrounds
   ============================================================ */
.section-alt {
    background-color: var(--pt-section-alt);
}

.section-base {
    background-color: var(--pt-section-base);
}

/* ============================================================
   8. FEATURE ICONS
   ============================================================ */
.feature-icon {
    font-size: 2.5rem;
    color: var(--light-blue);
    width: 72px;
    height: 72px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(31, 138, 192, 0.1) 0%, rgba(16, 76, 145, 0.06) 100%);
    margin: 0 auto;
    transition: transform var(--pt-transition), box-shadow var(--pt-transition);
}

.feature-icon:hover {
    transform: scale(1.08);
    box-shadow: var(--pt-shadow-glow);
}

/* ============================================================
   9. BREADCRUMB — Minimalist with Icons
   ============================================================ */
.breadcrumb-minimalist {
    padding: 0.6rem 1rem;
    background-color: transparent;
    border-bottom: 1px solid var(--pt-border-subtle);
    margin-bottom: 1.5rem;
}

.breadcrumb-minimalist .breadcrumb-item + .breadcrumb-item::before {
    content: '\F285';
    font-family: 'bootstrap-icons';
    padding-right: 0.5rem;
    color: var(--pt-text-muted);
    vertical-align: middle;
}

.breadcrumb-minimalist .breadcrumb-item + .breadcrumb-item {
    padding-left: 0.5rem;
}

.breadcrumb-minimalist .breadcrumb-item a {
    text-decoration: none;
    color: var(--light-blue);
    transition: color var(--pt-transition);
}

.breadcrumb-minimalist .breadcrumb-item a:hover {
    color: var(--dark-blue);
}

.breadcrumb-minimalist .breadcrumb-item.active {
    color: var(--pt-text-muted);
}

/* ============================================================
   10. FOOTER — Premium dark footer
   ============================================================ */
.footer {
    background-color: var(--pt-footer-bg);
    color: var(--pt-footer-text);
    position: relative;
    font-size: 0.9rem;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--pt-neon-violet-glow), var(--pt-neon-cyan-glow), transparent);
}

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

.footer a:hover {
    color: var(--pt-neon-cyan);
}

.footer h5,
.footer h6 {
    color: #E4E4E7;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.85rem;
    letter-spacing: 0.08em;
}

.footer hr {
    border-color: rgba(255, 255, 255, 0.06);
}

.footer p {
    margin-bottom: 0.5rem;
}

/* ============================================================
   11. INTERACTION BUTTONS (Vote / Favorite)
   ============================================================ */
.interaction-disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.vote-btn,
.favorite-btn {
    transition: transform var(--pt-transition), text-shadow var(--pt-transition);
}

.vote-btn:hover,
.favorite-btn:hover {
    transform: scale(1.12);
}

.vote-btn.active,
.favorite-btn.active {
    transform: scale(1.2);
    text-shadow: 0 0 10px currentColor;
}

/* ============================================================
   12. BLOG / NEWS CARDS
   ============================================================ */
.news-card-hover {
    background: var(--pt-card-bg);
    border: 1px solid var(--pt-border);
    border-radius: var(--pt-radius);
    overflow: hidden;
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

.news-card-hover:hover {
    transform: translateY(-5px);
    box-shadow: var(--pt-shadow-lg);
}

.news-card-hover .card-img-top {
    transition: transform 0.3s ease-in-out;
}

.news-card-hover:hover .card-img-top {
    transform: scale(1.05);
}

.news-card-hover .btn {
    transition: background-color 0.2s ease-in-out, color 0.2s ease-in-out;
}

/* ============================================================
   13. PAGINATION
   ============================================================ */
.pagination .page-item .disabled .page-link {
    color: var(--pt-text-muted);
    pointer-events: none;
    background-color: var(--pt-surface);
    border-color: var(--pt-border);
}

.page-link {
    background-color: var(--pt-surface);
    border-color: var(--pt-border);
    color: var(--pt-text-primary);
}

.page-item.active .page-link {
    background: var(--pt-gradient-cta);
    border-color: transparent;
}

/* ============================================================
   14. DARK MODE TOGGLE — Animated icon
   ============================================================ */
#theme-toggle {
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    border: 1px solid var(--pt-border);
    background: var(--pt-surface);
    color: var(--pt-text-primary);
    transition: transform var(--pt-transition), background var(--pt-transition), border-color var(--pt-transition);
}

#theme-toggle:hover {
    transform: rotate(15deg) scale(1.05);
    border-color: var(--light-blue);
}

#theme-icon {
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 1rem;
}

/* ============================================================
   15. PRICING CARDS
   ============================================================ */
.pricing-highlight {
    border-color: var(--dark-blue) !important;
    box-shadow: var(--pt-shadow), 0 0 0 2px var(--dark-blue);
    position: relative;
}

.pricing-highlight .card-header {
    background: var(--pt-gradient-cta);
    color: #fff;
}

/* ============================================================
   16. AUTH CARDS (Login / Signup)
   ============================================================ */
.auth-card {
    background: var(--pt-card-bg);
    border: 1px solid var(--pt-border);
    border-radius: var(--pt-radius-lg);
    box-shadow: var(--pt-shadow);
    position: relative;
    overflow: hidden;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--pt-gradient-brand);
}

/* ============================================================
   17. BETA BADGE
   ============================================================ */
.beta-badge {
    font-size: 0.6rem;
    font-weight: bold;
    padding: 0.25em 0.5em;
    vertical-align: middle;
    margin-left: 8px;
    letter-spacing: 0.05em;
}

/* ============================================================
   18. SMOOTH THEME TRANSITION
   ============================================================ */
html {
    transition: background-color 0.3s ease;
}

html *, html *::before, html *::after {
    transition: background-color 0.3s ease, color 0.15s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Exclude elements that have their own transitions */
html .btn, html a, html .navbar-main, html .prompt-card, html .news-card-hover,
html .vote-btn, html .favorite-btn, html #theme-toggle {
    transition-property: background-color, color, border-color, box-shadow, transform, filter;
    transition-duration: 0.25s;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   19. MODAL OVERRIDES for dark mode
   ============================================================ */
.modal-content {
    background-color: var(--pt-card-bg);
    border-color: var(--pt-border);
    color: var(--pt-text-primary);
}

.modal-header {
    border-bottom-color: var(--pt-border);
}

.modal-footer {
    border-top-color: var(--pt-border);
}

/* ============================================================
   20. FORM CONTROLS dark mode
   ============================================================ */
.form-control,
.form-select {
    background-color: var(--pt-surface);
    border-color: var(--pt-border);
    color: var(--pt-text-primary);
    transition: border-color var(--pt-transition), box-shadow var(--pt-transition);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--light-blue);
    box-shadow: 0 0 0 0.2rem rgba(31, 138, 192, 0.15);
    background-color: var(--pt-surface);
    color: var(--pt-text-primary);
}

/* ============================================================
   21. DROPDOWN MENUS dark mode
   ============================================================ */
.dropdown-menu {
    background-color: var(--pt-card-bg);
    border-color: var(--pt-border);
    box-shadow: var(--pt-shadow-lg);
}

.dropdown-item {
    color: var(--pt-text-primary);
}

.dropdown-item:hover,
.dropdown-item:focus {
    background-color: var(--pt-surface-hover);
    color: var(--pt-text-primary);
}

.dropdown-header {
    color: var(--pt-text-muted);
}

.dropdown-divider {
    border-color: var(--pt-border);
}

/* ============================================================
   22. ACCORDION (FAQ) dark mode
   ============================================================ */
.accordion-item {
    background-color: var(--pt-card-bg);
    border-color: var(--pt-border);
    color: var(--pt-text-primary);
}

.accordion-button {
    background-color: var(--pt-card-bg);
    color: var(--pt-text-primary);
}

.accordion-button:not(.collapsed) {
    background-color: var(--pt-surface-hover);
    color: var(--dark-blue);
}

.accordion-body {
    background-color: var(--pt-card-bg);
    color: var(--pt-text-secondary);
}

/* ============================================================
   23. UTILITY: action bar
   ============================================================ */
.prompt-actions-bar {
    background-color: var(--pt-bg-tertiary);
    border: 1px solid var(--pt-border-subtle);
}

/* ============================================================
   24. ALERTS (keep functional, adapt borders)
   ============================================================ */
[data-bs-theme="dark"] .alert-danger {
    background-color: rgba(220, 53, 69, 0.15);
    border-color: rgba(220, 53, 69, 0.3);
    color: #f5c2c7;
}

[data-bs-theme="dark"] .alert-success {
    background-color: rgba(25, 135, 84, 0.15);
    border-color: rgba(25, 135, 84, 0.3);
    color: #a3cfbb;
}

/* ============================================================
   25. UTILITY: Glass Card
   Usage: <div class="glass-card"> ... </div>
   ============================================================ */
.glass-card {
    background: var(--pt-navbar-bg);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid var(--pt-border);
    border-radius: var(--pt-radius-lg);
    box-shadow: var(--pt-shadow);
    transition: transform var(--pt-transition), box-shadow var(--pt-transition);
}

.glass-card:hover {
    box-shadow: var(--pt-shadow-lg);
}

/* ============================================================
   26. UTILITY: Neon Glow (CTA buttons, highlights)
   Usage: <button class="btn btn-primary neon-glow"> ... </button>
   ============================================================ */
.neon-glow {
    position: relative;
    transition: box-shadow var(--pt-transition), transform var(--pt-transition);
}

.neon-glow:hover {
    box-shadow: 0 0 20px var(--pt-neon-violet-glow), 0 0 60px rgba(139, 92, 246, 0.1);
    transform: translateY(-2px);
}

.neon-glow-cyan:hover {
    box-shadow: 0 0 20px var(--pt-neon-cyan-glow), 0 0 60px rgba(6, 182, 212, 0.1);
    transform: translateY(-2px);
}

/* ============================================================
   27. UTILITY: Gradient Text
   Usage: <h1 class="gradient-text"> ... </h1>
   ============================================================ */
.gradient-text {
    background: var(--pt-gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================================
   28. UTILITY: Skeleton Loader
   Usage: <div class="skeleton-loader" style="height: 20px; width: 60%;"></div>
   ============================================================ */
.skeleton-loader {
    background: linear-gradient(
        90deg,
        var(--pt-bg-tertiary) 25%,
        var(--pt-surface-hover) 50%,
        var(--pt-bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s ease-in-out infinite;
    border-radius: var(--pt-space-2);
    min-height: 16px;
}

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

/* ============================================================
   29. UTILITY: Scroll Reveal Animation
   Usage: <div class="reveal"> ... </div>  (add .revealed via JS)
   ============================================================ */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================================
   30. UTILITY: Badge Pill (neon variants)
   ============================================================ */
.badge-neon-violet {
    background-color: rgba(139, 92, 246, 0.15);
    color: var(--pt-neon-violet);
    border: 1px solid rgba(139, 92, 246, 0.25);
    font-weight: 500;
}

.badge-neon-cyan {
    background-color: rgba(6, 182, 212, 0.15);
    color: var(--pt-neon-cyan);
    border: 1px solid rgba(6, 182, 212, 0.25);
    font-weight: 500;
}

/* ============================================================
   31. NAVBAR: Credit balance chip
   ============================================================ */
.credit-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: var(--pt-radius-pill);
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.2);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--pt-neon-violet);
    white-space: nowrap;
}

/* ============================================================
   32. HERO SEARCH BAR (Sprint 2)
   ============================================================ */
.hero-search-form .input-group {
    border: 2px solid var(--pt-border);
    border-radius: var(--pt-radius-lg);
    overflow: hidden;
    background: var(--pt-surface);
    transition: border-color var(--pt-transition), box-shadow var(--pt-transition);
}

.hero-search-form .input-group:focus-within {
    border-color: var(--pt-neon-violet);
    box-shadow: 0 0 20px var(--pt-neon-violet-glow), 0 0 60px rgba(139, 92, 246, 0.08);
}

.hero-search-form .input-group .form-control,
.hero-search-form .input-group .input-group-text {
    border: none;
    background: transparent;
    box-shadow: none;
}

.hero-search-form .input-group .form-control:focus {
    box-shadow: none;
}

.hero-search-form .input-group .input-group-text {
    color: var(--pt-text-muted);
}

/* ============================================================
   33. CATEGORIES CAROUSEL (Sprint 2)
   ============================================================ */
.categories-carousel {
    scrollbar-width: thin;
    scrollbar-color: var(--pt-border) transparent;
    -webkit-overflow-scrolling: touch;
}

.categories-carousel::-webkit-scrollbar {
    height: 4px;
}

.categories-carousel::-webkit-scrollbar-track {
    background: transparent;
}

.categories-carousel::-webkit-scrollbar-thumb {
    background-color: var(--pt-border);
    border-radius: var(--pt-radius-pill);
}

.category-pill {
    transition: transform var(--pt-transition), box-shadow var(--pt-transition);
    cursor: pointer;
}

.category-pill:hover {
    transform: translateY(-4px);
    box-shadow: var(--pt-shadow-glow);
}

/* ============================================================
   34. CREATOR AVATARS (Sprint 2)
   ============================================================ */
.creator-card {
    transition: transform var(--pt-transition);
}

.creator-card:hover {
    transform: translateY(-4px);
}

.creator-avatar-ring {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    padding: 3px;
    background: var(--pt-gradient-brand);
}

.creator-avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--pt-bg-secondary);
    color: var(--pt-neon-violet);
}

/* ============================================================
   35. PROMPT CARD — Upgraded with hover overlay (Sprint 2)
   ============================================================ */
.prompt-card .card-img-wrapper {
    position: relative;
    overflow: hidden;
}

.prompt-card .card-img-overlay-stats {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 8px 12px;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    display: flex;
    justify-content: space-between;
    align-items: center;
    opacity: 0;
    transition: opacity var(--pt-transition);
    color: #fff;
    font-size: 0.75rem;
}

.prompt-card:hover .card-img-overlay-stats {
    opacity: 1;
}

.prompt-card .card-title {
    font-family: 'Space Grotesk', 'Outfit', sans-serif;
    font-weight: 600;
    color: var(--pt-text-primary);
    font-size: 1rem;
    line-height: 1.3;
}

/* ============================================================
   36. EXPLORE: Sidebar fixes (Sprint 2)
   ============================================================ */
@media (max-width: 991.98px) {
    .explore-page .glass-card.sticky-top {
        position: static !important;
    }
}

/* ============================================================
   37. PROMPT VIEW — 2 column layout (Sprint 3)
   ============================================================ */
.prompt-view-sidebar {
    position: sticky;
    top: 80px;
}

@media (max-width: 991.98px) {
    .prompt-view-sidebar {
        position: static;
    }
}

/* ============================================================
   38. PREMIUM UNLOCK — Glass + Neon Lock (Sprint 3)
   ============================================================ */
.premium-lock-block {
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: var(--pt-radius-lg);
    background: var(--pt-navbar-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    text-align: center;
    padding: 3rem 2rem;
}

.premium-lock-block::before {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(139, 92, 246, 0.03) 2px,
        rgba(139, 92, 246, 0.03) 4px
    );
    pointer-events: none;
}

.premium-lock-icon {
    font-size: 3.5rem;
    color: var(--pt-neon-violet);
    filter: drop-shadow(0 0 20px var(--pt-neon-violet-glow));
    animation: lockPulse 2s ease-in-out infinite;
}

@keyframes lockPulse {
    0%, 100% { filter: drop-shadow(0 0 15px var(--pt-neon-violet-glow)); }
    50% { filter: drop-shadow(0 0 30px var(--pt-neon-violet-glow)) brightness(1.2); }
}

.premium-lock-block .btn-unlock {
    background: var(--pt-gradient-cta);
    border: none;
    color: #fff;
    font-weight: 600;
    padding: 12px 32px;
    border-radius: var(--pt-radius);
    font-size: 1.05rem;
    transition: transform var(--pt-transition), box-shadow var(--pt-transition);
}

.premium-lock-block .btn-unlock:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px var(--pt-neon-violet-glow);
}

/* ============================================================
   39. COMMENTS — Chat bubble style (Sprint 3)
   ============================================================ */
.comment-item .comment-bubble {
    background: var(--pt-card-bg);
    border: 1px solid var(--pt-border);
    border-radius: 0 var(--pt-radius) var(--pt-radius) var(--pt-radius);
    padding: 1rem 1.25rem;
    transition: border-color var(--pt-transition);
}

.comment-item .comment-bubble:hover {
    border-color: var(--pt-neon-violet);
}

.comment-item .comment-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    background: var(--pt-gradient-brand);
    color: #fff;
    flex-shrink: 0;
}

.comment-item .replies {
    border-left: 2px solid var(--pt-border) !important;
}

.react-btn {
    border-radius: var(--pt-radius-pill) !important;
    padding: 2px 10px !important;
    font-size: 0.8rem !important;
}

/* ============================================================
   40. CREATOR DASHBOARD — KPI Cards (Sprint 3)
   ============================================================ */
.kpi-card {
    border: 1px solid var(--pt-border);
    border-radius: var(--pt-radius-lg);
    background: var(--pt-card-bg);
    padding: 1.5rem;
    text-align: center;
    transition: transform var(--pt-transition), box-shadow var(--pt-transition);
}

.kpi-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--pt-shadow-glow);
}

.kpi-card .kpi-icon {
    font-size: 1.8rem;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
}

.kpi-card .kpi-value {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.kpi-card .kpi-label {
    font-size: 0.8rem;
    color: var(--pt-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================================
   41. CONFETTI (Sprint 3)
   ============================================================ */
@keyframes confettiFall {
    0% { transform: translateY(-100vh) rotate(0deg); opacity: 1; }
    100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

.confetti-piece {
    position: fixed;
    width: 10px;
    height: 10px;
    top: -10px;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    animation: confettiFall 3s ease-in-out forwards;
}

/* ============================================================
   42. SUBSCRIPTION PLANS PAGE (Sprint 5)
   ============================================================ */
.subscription-plans .glass-card.border-popular {
    position: relative;
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.15);
}

.subscription-checkout .kpi-value {
    font-family: 'Space Grotesk', sans-serif;
}

/* ============================================================
   43. MOBILE RESPONSIVE POLISH (Sprint 8.7)
   ============================================================ */

/* --- Small devices (phones, 576px and below) --- */
@media (max-width: 575.98px) {
    /* Hero Section */
    .hero-section h1 { font-size: 1.8rem !important; }
    .hero-section .search-glow { font-size: 0.9rem; }

    /* Navbar */
    .navbar { padding: 0.5rem 1rem; }
    .credit-chip { font-size: 0.75rem; padding: 4px 10px; }

    /* Cards */
    .glass-card { padding: 1rem; }
    .kpi-card { padding: 1rem; }
    .kpi-card .kpi-value { font-size: 1.3rem; }
    .kpi-card .kpi-icon { width: 44px; height: 44px; font-size: 1.4rem; }

    /* Prompt view */
    .prompt-view .premium-lock-block { padding: 2rem 1rem; }
    .premium-lock-icon { font-size: 2.5rem; }

    /* Subscription plans */
    .subscription-plans .kpi-value { font-size: 1.5rem; }

    /* Category carousel */
    .category-carousel { gap: 8px; }
    .category-carousel .badge { font-size: 0.7rem; padding: 6px 12px; }

    /* Dashboard funnel */
    .creator-dashboard canvas { max-height: 180px; }

    /* Table scroll */
    .glass-card table { display: block; overflow-x: auto; white-space: nowrap; }
}

/* --- Extra small (320px) --- */
@media (max-width: 359px) {
    body { font-size: 0.85rem; }
    .hero-section h1 { font-size: 1.4rem !important; }
    .kpi-card .kpi-value { font-size: 1.1rem; }
    .btn { font-size: 0.8rem; padding: 8px 16px; }
}

/* --- Medium devices (tablets, 768px) --- */
@media (min-width: 576px) and (max-width: 767.98px) {
    .kpi-card .kpi-value { font-size: 1.5rem; }
    .subscription-plans .row > div { flex: 0 0 100%; max-width: 100%; }
}

/* --- Tablet landscape (768-991px) --- */
@media (min-width: 768px) and (max-width: 991.98px) {
    .subscription-plans .row > div { flex: 0 0 50%; max-width: 50%; }
}

/* --- PWA Install Banner Mobile --- */
@media (max-width: 480px) {
    #pwa-install-banner {
        width: 95% !important;
        padding: 12px 14px !important;
    }
    .pwa-banner-icon { font-size: 1.5rem !important; }
    .pwa-banner-text strong { font-size: 0.8rem !important; }
}

/* ============================================================
   44. AFFILIATE DASHBOARD (Sprint 5)
   ============================================================ */
.affiliate-dashboard .input-group .form-control {
    background: var(--pt-surface);
    border-color: var(--pt-border);
    color: var(--pt-text);
}

/* ============================================================
   45. BADGES DISPLAY (Sprint 6/8)
   ============================================================ */
.badge-earned {
    transition: transform var(--pt-transition), box-shadow var(--pt-transition);
}
.badge-earned:hover {
    transform: scale(1.1);
    box-shadow: 0 0 12px currentColor;
}

/* ============================================================
   46. API DOCS LINK (Sprint 6)
   ============================================================ */
.api-badge {
    background: linear-gradient(135deg, var(--pt-neon-cyan), var(--pt-neon-violet));
    color: #fff;
    font-weight: 600;
    font-size: 0.7rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* ============================================================
   47. GENERATIVE CARD HEADERS (Sprint 8 - Creative Cards)
   ============================================================ */
.card-generative-header {
    display: block;
    position: relative;
    height: 180px;
    overflow: hidden;
    border-radius: var(--pt-radius-lg) var(--pt-radius-lg) 0 0;
    text-decoration: none;
}

.card-generative-header svg {
    transition: transform var(--pt-transition);
}

.card-generative-header:hover svg {
    transform: scale(1.08);
}

.card-generative-title {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 2;
}

.card-gen-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(139, 92, 246, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(139, 92, 246, 0.3);
    color: var(--pt-neon-violet);
    font-size: 1rem;
}

/* ============================================================
   48. VERSION BADGE (Sprint 8.1)
   ============================================================ */
.version-badge {
    font-family: 'Space Grotesk', monospace;
    font-size: 0.65rem;
    background: rgba(6, 182, 212, 0.1);
    color: var(--pt-neon-cyan);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: var(--pt-radius-pill);
    padding: 2px 8px;
    letter-spacing: 0.04em;
}

/* ============================================================
   49. CHECKOUT PAGE (Sprint 7.6)
   ============================================================ */
.subscription-checkout .glass-card {
    max-width: 520px;
    margin: 0 auto;
}

/* ============================================================
   50. FUNNEL CHART CONTAINER (Sprint 8.4)
   ============================================================ */
.funnel-chart-wrap {
    max-width: 280px;
    margin: 0 auto;
}

/* ============================================================
   51. PROMPT VIEW HERO (Sprint 11)
   ============================================================ */
.prompt-hero {
    background: var(--pt-surface-elevated);
}
.hero-content {
    background: linear-gradient(to top, rgba(12, 12, 14, 0.9) 0%, rgba(12, 12, 14, 0) 100%);
}
.avatar-circle {
    box-shadow: 0 0 10px var(--pt-neon-cyan-glow);
}

/* ============================================================
   52. TERMINAL CODE BLOCK (Sprint 11)
   ============================================================ */
.terminal-block {
    background: #0d1117;
    border: 1px solid #30363d;
    border-radius: var(--pt-radius-lg);
    overflow: hidden;
}
.terminal-header {
    background: #161b22;
    padding: 10px 15px;
    border-bottom: 1px solid #30363d;
}
.terminal-dots .dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 6px;
}
.dot-red { background-color: #ff5f56; }
.dot-yellow { background-color: #ffbd2e; }
.dot-green { background-color: #27c93f; }

.terminal-body {
    padding: 20px;
    background: #0d1117;
    font-size: 0.95rem;
    line-height: 1.5;
    max-height: 500px;
    overflow-y: auto;
}
.copy-prompt-btn {
    background: rgba(255,255,255,0.1);
    color: #c9d1d9;
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.2s;
}
.copy-prompt-btn:hover {
    background: rgba(255,255,255,0.2);
    color: #fff;
}

/* ============================================================
   53. CHAT UI COMMENTS (Sprint 11)
   ============================================================ */
.chat-message {
    display: flex;
    margin-bottom: 20px;
}
.chat-message-content {
    background: var(--pt-surface-elevated);
    border: 1px solid var(--pt-border);
    padding: 12px 16px;
    border-radius: 0 18px 18px 18px;
    position: relative;
    max-width: 90%;
}
.chat-message.is-mine {
    flex-direction: row-reverse;
}
.chat-message.is-mine .chat-message-content {
    background: rgba(139, 92, 246, 0.15); /* neon violet light */
    border-color: rgba(139, 92, 246, 0.3);
    border-radius: 18px 0 18px 18px;
}
.chat-message.is-mine .chat-avatar {
    margin-left: 15px;
    margin-right: 0;
}
.chat-avatar {
    margin-right: 15px;
    flex-shrink: 0;
}
.chat-reply-btn {
    font-size: 0.8rem;
    color: var(--pt-text-muted);
    cursor: pointer;
}
.chat-reply-btn:hover {
    color: var(--pt-neon-cyan);
}