/**
 * IA Osasco - Main Stylesheet
 * Design: Banana Prompts Style (Clean, Minimalist)
 */

/* ===== CSS Variables ===== */
:root {
    /* Colors */
    --color-bg: #F9FAFB;
    --color-white: #FFFFFF;
    --color-text: #1F2937;
    --color-text-secondary: #6B7280;
    --color-text-muted: #9CA3AF;
    --color-border: #E5E7EB;
    --color-border-light: #F3F4F6;

    /* Primary/Accent */
    --color-primary: #1F2937;
    --color-primary-hover: #374151;
    --color-accent: #FCD34D;
    --color-accent-hover: #FBBF24;

    /* Status Colors */
    --color-success: #10B981;
    --color-error: #EF4444;
    --color-warning: #F59E0B;
    --color-info: #3B82F6;

    /* PRO Badge */
    --color-pro: linear-gradient(135deg, #F59E0B, #D97706);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Layout */
    --header-height: 72px;
    --container-max: 1280px;
    --sidebar-width: 280px;
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: inherit;
    text-decoration: none;
}

img,
video {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

ul,
ol {
    list-style: none;
}

/* ===== Layout ===== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.main-content {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

/* ===== Header ===== */
.header {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: var(--spacing-lg);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    color: var(--color-text);
}

/* Navigation */
.nav-main {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.nav-link {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text);
    background-color: var(--color-border-light);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

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

.btn-accent {
    background-color: var(--color-accent);
    color: var(--color-text);
}

.btn-accent:hover {
    background-color: var(--color-accent-hover);
}

.btn-outline {
    border: 1px solid var(--color-border);
    background: var(--color-white);
    color: var(--color-text);
}

.btn-outline:hover {
    background-color: var(--color-border-light);
}

.btn-ghost {
    color: var(--color-text-secondary);
}

.btn-ghost:hover {
    background-color: var(--color-border-light);
    color: var(--color-text);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.8rem;
}

.btn-block {
    width: 100%;
}

/* ===== User Dropdown ===== */
.user-dropdown {
    position: relative;
}

.user-avatar-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs);
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}

.user-avatar-btn:hover {
    background-color: var(--color-border-light);
}

.avatar-img,
.avatar-placeholder {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.avatar-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--color-white);
    font-weight: 600;
    font-size: 0.9rem;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 200;
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-header {
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.dropdown-name {
    font-weight: 600;
}

.dropdown-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--spacing-xs) 0;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background-color: var(--color-border-light);
    color: var(--color-text);
}

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

.dropdown-item.text-danger {
    color: var(--color-error);
}

/* ===== Mobile Menu ===== */
.mobile-menu-btn {
    display: none;
    padding: var(--spacing-sm);
    color: var(--color-text);
}

.mobile-menu {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md);
}

.mobile-menu.show {
    display: block;
}

.mobile-nav-link {
    display: block;
    padding: var(--spacing-md);
    font-weight: 500;
    border-radius: var(--radius-sm);
}

.mobile-nav-link:hover {
    background-color: var(--color-border-light);
}

@media (max-width: 768px) {
    .nav-main {
        display: none;
    }

    .header-actions .btn {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }
}

/* ===== Badges ===== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-pro {
    background: var(--color-pro);
    color: var(--color-white);
}

.badge-premium {
    background: var(--color-pro);
    color: var(--color-white);
    padding: 4px 10px;
    font-size: 0.65rem;
}

.badge-pending {
    background: #FEF3C7;
    color: #92400E;
}

.badge-approved {
    background: #D1FAE5;
    color: #065F46;
}

.badge-rejected {
    background: #FEE2E2;
    color: #991B1B;
}

/* ===== Hero Section ===== */
.hero {
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-border-light);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

/* ===== Filter Section ===== */
.filter-section {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.filter-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
}

.filter-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.filter-desc {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-lg);
}

.filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    align-items: center;
}

.filter-group {
    flex: 1;
    min-width: 200px;
}

.filter-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

.filter-select,
.filter-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    color: var(--color-text);
    font-size: 0.9rem;
}

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

.filter-tabs {
    display: flex;
    gap: var(--spacing-xs);
    background: var(--color-border-light);
    padding: 4px;
    border-radius: var(--radius-full);
}

.filter-tab {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.filter-tab:hover {
    color: var(--color-text);
}

.filter-tab.active {
    background: var(--color-white);
    color: var(--color-text);
    box-shadow: var(--shadow-sm);
}

/* ===== Prompt Grid ===== */
.prompt-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

/* ===== Prompt Card ===== */
.prompt-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    position: relative;
}

.prompt-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.prompt-card-media {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    background: var(--color-border-light);
}

.prompt-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.prompt-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-md);
}

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

.prompt-card-title-overlay {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    right: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.prompt-card-title-text {
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    max-width: 70%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.prompt-card-likes {
    display: flex;
    align-items: center;
    gap: 4px;
    background: rgba(255, 255, 255, 0.95);
    color: var(--color-text);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 500;
}

.prompt-card-likes svg {
    width: 14px;
    height: 14px;
    color: var(--color-error);
}

.prompt-card-premium-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
}

.prompt-card-body {
    padding: var(--spacing-md);
}

.prompt-card-prompt {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.prompt-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.prompt-card-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.prompt-card-author img,
.prompt-card-author .avatar-placeholder {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
}

.prompt-card-author .avatar-placeholder {
    font-size: 0.7rem;
}

.btn-copy {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-border-light);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.btn-copy:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

/* Pro Locked Card */
.prompt-card.locked .prompt-card-img {
    filter: blur(3px);
}

.prompt-card.locked .prompt-card-overlay {
    opacity: 1;
    background: rgba(0, 0, 0, 0.6);
    justify-content: center;
    align-items: center;
}

.locked-content {
    text-align: center;
    color: white;
}

.locked-content svg {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-sm);
}

.locked-content p {
    font-weight: 500;
}

/* ===== Footer ===== */
.footer {
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand .logo {
    margin-bottom: var(--spacing-md);
}

.footer-desc {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-links h4 {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-links ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.social-link:hover {
    color: var(--color-text);
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

/* ===== Flash Messages ===== */
.flash-container {
    position: fixed;
    top: calc(var(--header-height) + var(--spacing-md));
    right: var(--spacing-lg);
    z-index: 1000;
    max-width: 400px;
}

.flash {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    animation: slideIn var(--transition-normal) ease;
}

.flash-success {
    background: #D1FAE5;
    color: #065F46;
}

.flash-error {
    background: #FEE2E2;
    color: #991B1B;
}

.flash-info {
    background: #DBEAFE;
    color: #1E40AF;
}

.flash-close {
    font-size: 1.25rem;
    line-height: 1;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.flash-close:hover {
    opacity: 1;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.form-label .required {
    color: var(--color-error);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    color: var(--color-text);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-text-muted);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-hint {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
}

.form-error {
    font-size: 0.8rem;
    color: var(--color-error);
    margin-top: var(--spacing-xs);
}

/* ===== Upload Area ===== */
.upload-area {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--color-primary);
    background: var(--color-border-light);
}

.upload-area input[type="file"] {
    display: none;
}

.upload-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-md);
    color: var(--color-text-muted);
}

.upload-text {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

.upload-hint {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.upload-preview {
    margin-top: var(--spacing-md);
}

.upload-preview img,
.upload-preview video {
    max-height: 200px;
    border-radius: var(--radius-md);
    margin: 0 auto;
}

/* ===== Auth Pages ===== */
.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - var(--header-height) - 200px);
    padding: var(--spacing-xl);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xl);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.auth-subtitle {
    color: var(--color-text-secondary);
}

.auth-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.auth-footer a {
    color: var(--color-primary);
    font-weight: 500;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* ===== Cards/Paper ===== */
.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    background: var(--color-border-light);
}

/* ===== Profile Page ===== */
.profile-header {
    display: flex;
    gap: var(--spacing-xl);
    align-items: flex-start;
    margin-bottom: var(--spacing-xl);
}

.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 4px solid var(--color-white);
    box-shadow: var(--shadow-md);
}

.profile-avatar-placeholder {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    font-weight: 600;
}

.profile-info h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.profile-meta {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

/* ===== Pricing Cards ===== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    max-width: 960px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    position: relative;
    border: 2px solid var(--color-border);
    transition: all var(--transition-normal);
}

.pricing-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
    border-color: var(--color-accent);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-4px);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent);
    color: var(--color-text);
    padding: 4px 16px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.pricing-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.pricing-price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1;
}

.pricing-price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--color-text-secondary);
}

.pricing-period {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.pricing-features {
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    color: var(--color-text-secondary);
}

.pricing-features li svg {
    color: var(--color-success);
    flex-shrink: 0;
}

.pricing-savings {
    background: #D1FAE5;
    color: #065F46;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    display: inline-block;
}

/* ===== Details Page ===== */
.details-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-xl);
    align-items: start;
}

@media (max-width: 968px) {
    .details-grid {
        grid-template-columns: 1fr;
    }
}

.details-media {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.details-media img,
.details-media video {
    width: 100%;
    display: block;
}

.details-sidebar {
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-lg));
}

.details-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.details-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.details-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.details-author img,
.details-author .avatar-placeholder {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
}

.details-author-info {
    flex: 1;
}

.details-author-name {
    font-weight: 600;
}

.details-author-date {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.details-tool {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-border-light);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.details-prompt {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.details-prompt-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.details-prompt-text {
    font-size: 0.95rem;
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
}

/* Pro Paywall */
.paywall {
    background: linear-gradient(135deg, #1F2937, #374151);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--color-white);
}

.paywall-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    opacity: 0.8;
}

.paywall-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.paywall-desc {
    opacity: 0.8;
    margin-bottom: var(--spacing-lg);
}

.paywall .btn {
    background: var(--color-accent);
    color: var(--color-text);
}

.paywall .btn:hover {
    background: var(--color-accent-hover);
}

/* ===== Admin Styles ===== */
.admin-layout {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    min-height: calc(100vh - var(--header-height));
}

.admin-sidebar {
    background: var(--color-white);
    border-right: 1px solid var(--color-border);
    padding: var(--spacing-lg);
}

.admin-nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
    transition: all var(--transition-fast);
}

.admin-nav-item:hover,
.admin-nav-item.active {
    background: var(--color-border-light);
    color: var(--color-text);
}

.admin-content {
    padding: var(--spacing-xl);
    overflow-x: auto;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.admin-title {
    font-size: 1.5rem;
    font-weight: 700;
}

/* Tables */
.table-container {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.table th {
    background: var(--color-border-light);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-secondary);
}

.table tr:hover td {
    background: var(--color-border-light);
}

.table-actions {
    display: flex;
    gap: var(--spacing-xs);
}

@media (max-width: 968px) {
    .admin-layout {
        grid-template-columns: 1fr;
    }

    .admin-sidebar {
        display: none;
    }
}

/* ===== Course Cards ===== */
.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.course-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.course-image {
    aspect-ratio: 16/9;
    object-fit: cover;
    width: 100%;
}

.course-body {
    padding: var(--spacing-lg);
}

.course-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.course-desc {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-price {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-success);
    margin-bottom: var(--spacing-md);
}

/* ===== Submit Page ===== */
.submit-layout {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: var(--spacing-xl);
    align-items: start;
}

@media (max-width: 968px) {
    .submit-layout {
        grid-template-columns: 1fr;
    }
}

.submit-sidebar {
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-lg));
}

.submit-info-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.submit-info-title {
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.submit-info-text {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Toggle Buttons */
.toggle-group {
    display: inline-flex;
    background: var(--color-border-light);
    border-radius: var(--radius-full);
    padding: 4px;
}

.toggle-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.toggle-btn:hover {
    color: var(--color-text);
}

.toggle-btn.active {
    background: var(--color-white);
    color: var(--color-text);
    box-shadow: var(--shadow-sm);
}

/* ===== Empty States ===== */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
}

.empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    color: var(--color-text-muted);
}

.empty-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.empty-desc {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* ===== Utilities ===== */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

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

.text-secondary {
    color: var(--color-text-secondary);
}

.text-success {
    color: var(--color-success);
}

.text-error {
    color: var(--color-error);
}

.text-danger {
    color: var(--color-error);
}

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

.mt-1 {
    margin-top: var(--spacing-sm);
}

.mt-2 {
    margin-top: var(--spacing-md);
}

.mt-3 {
    margin-top: var(--spacing-lg);
}

.mt-4 {
    margin-top: var(--spacing-xl);
}

.mb-1 {
    margin-bottom: var(--spacing-sm);
}

.mb-2 {
    margin-bottom: var(--spacing-md);
}

.mb-3 {
    margin-bottom: var(--spacing-lg);
}

.mb-4 {
    margin-bottom: var(--spacing-xl);
}

.d-flex {
    display: flex;
}

.align-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-1 {
    gap: var(--spacing-sm);
}

.gap-2 {
    gap: var(--spacing-md);
}

.gap-3 {
    gap: var(--spacing-lg);
}

.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}