/* ============================================
   LA Editor - Main Stylesheet
   Dark Theme with Red Accents
   ============================================ */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
    /* Dark Background Colors */
    --bg-primary: #0d0d0d;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #252525;
    --bg-card: #1e1e1e;
    --bg-input: #2a2a2a;
    
    /* Red Accent Colors */
    --accent-primary: #dc2626;
    --accent-hover: #ef4444;
    --accent-dark: #b91c1c;
    --accent-glow: rgba(220, 38, 38, 0.3);
    
    /* Text Colors */
    --text-primary: #f5f5f5;
    --text-secondary: #a3a3a3;
    --text-muted: #737373;
    --text-inverse: #0d0d0d;
    
    /* Border Colors */
    --border-color: #333333;
    --border-light: #404040;
    --border-focus: var(--accent-primary);
    
    /* Status Colors */
    --success: #22c55e;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    /* 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: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--accent-glow);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Font */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-hover);
}

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

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-sm { max-width: 640px; }
.container-md { max-width: 768px; }
.container-lg { max-width: 1024px; }

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo span {
    color: var(--accent-primary);
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--accent-hover);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--bg-input);
    border-color: var(--border-light);
}

.btn-outline {
    background-color: transparent;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
}

.btn-outline:hover:not(:disabled) {
    background-color: var(--accent-primary);
    color: var(--text-primary);
}

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

.btn-ghost:hover:not(:disabled) {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

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

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.875rem;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

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

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
}

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

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

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

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-error {
    color: var(--error);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

.form-hint {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow-md);
}

.card-image {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    background-color: var(--bg-tertiary);
}

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

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

.card-text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ============================================
   ALERTS & MESSAGES
   ============================================ */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    border: 1px solid transparent;
}

.alert-success {
    background-color: rgba(34, 197, 94, 0.1);
    border-color: var(--success);
    color: var(--success);
}

.alert-error {
    background-color: rgba(239, 68, 68, 0.1);
    border-color: var(--error);
    color: var(--error);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    border-color: var(--warning);
    color: var(--warning);
}

.alert-info {
    background-color: rgba(59, 130, 246, 0.1);
    border-color: var(--info);
    color: var(--info);
}

/* ============================================
   AUTH PAGES (Login/Register)
   ============================================ */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
}

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

.auth-title {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

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

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

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

/* ============================================
   USER PROFILE
   ============================================ */
.profile-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    padding: var(--spacing-2xl) 0;
}

.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-full);
    border: 3px solid var(--accent-primary);
    object-fit: cover;
    background-color: var(--bg-tertiary);
}

.profile-info h1 {
    margin-bottom: var(--spacing-xs);
}

.profile-stats {
    display: flex;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-md);
}

.profile-stat {
    text-align: center;
}

.profile-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.profile-stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ============================================
   INTERACTIONS (Likes, Comments)
   ============================================ */
.interaction-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.interaction-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.interaction-btn.liked {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

/* ============================================
   COMMENTS
   ============================================ */
.comment {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.comment-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    object-fit: cover;
    background-color: var(--bg-tertiary);
}

.comment-content {
    flex: 1;
}

.comment-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

.comment-author {
    font-weight: 600;
    color: var(--text-primary);
}

.comment-date {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.comment-text {
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0;
    margin-top: auto;
}

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

.footer-text {
    color: var(--text-muted);
    margin-bottom: 0;
}

/* ============================================
   UTILITIES
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent-primary); }
.text-success { color: var(--success); }
.text-error { color: var(--error); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }

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

/* ============================================
   LOADING SPINNER
   ============================================ */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   NAV DROPDOWN
   ============================================ */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav-dropdown-btn:hover {
    border-color: var(--accent-primary);
}

.nav-avatar {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.nav-avatar-default {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-primary);
    color: white;
    font-size: 12px;
    font-weight: 600;
}

.nav-username {
    font-weight: 500;
    font-size: 0.875rem;
}

.nav-role-badge {
    background: var(--accent-primary);
    color: white;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
}

.nav-arrow {
    font-size: 0.6rem;
    opacity: 0.6;
    transition: transform var(--transition-fast);
}

.nav-dropdown:hover .nav-arrow {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--spacing-xs);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 100;
}

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

.nav-dropdown-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.nav-dropdown-menu a:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-dropdown-menu hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--spacing-xs) 0;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .profile-header {
        flex-direction: column;
        text-align: center;
    }
    
    .profile-stats {
        justify-content: center;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}