/**
 * =============================================================================
 * MAIN STYLES - VIDEO CALL APP
 * =============================================================================
 * Modern, Mobile-First, Dark/Light Mode
 * Tech style dengan aksen hijau
 */

/* =============================================================================
   CSS VARIABLES (THEME)
   ============================================================================= */
:root {
    /* Green Accent */
    --color-primary: #10b981;
    --color-primary-hover: #059669;
    --color-primary-light: rgba(16, 185, 129, 0.1);
    --color-primary-glow: rgba(16, 185, 129, 0.3);

    /* Status Colors */
    --color-success: #10b981;
    --color-error: #ef4444;
    --color-warning: #f59e0b;
    --color-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: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;

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

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);

    /* Font */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

/* Dark Theme (Default) */
[data-theme="dark"] {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --bg-card: #141414;
    --bg-input: #1a1a1a;
    --bg-overlay: rgba(0, 0, 0, 0.8);
    
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    
    --border-color: #27272a;
    --border-light: #3f3f46;
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f4f4f5;
    --bg-tertiary: #e4e4e7;
    --bg-card: #ffffff;
    --bg-input: #f4f4f5;
    --bg-overlay: rgba(255, 255, 255, 0.9);
    
    --text-primary: #09090b;
    --text-secondary: #52525b;
    --text-muted: #a1a1aa;
    
    --border-color: #e4e4e7;
    --border-light: #d4d4d8;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

input {
    font-family: inherit;
    font-size: 1rem;
}

/* =============================================================================
   BUTTONS
   ============================================================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn svg {
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
}

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

.btn-primary:hover {
    background: var(--color-primary-hover);
    box-shadow: 0 0 20px var(--color-primary-glow);
}

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

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

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

.btn-ghost:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-block {
    width: 100%;
}

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

.btn-sm svg {
    width: 1rem;
    height: 1rem;
}

.btn-icon {
    padding: var(--spacing-sm);
}

/* =============================================================================
   FORM ELEMENTS
   ============================================================================= */
.form-group {
    margin-bottom: var(--spacing-md);
    flex: 1;
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper svg {
    position: absolute;
    left: var(--spacing-md);
    width: 1.25rem;
    height: 1.25rem;
    color: var(--text-muted);
    pointer-events: none;
}

.input-wrapper input {
    width: 100%;
    padding: var(--spacing-md);
    padding-left: 2.75rem;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

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

.toggle-password {
    position: absolute;
    right: var(--spacing-md);
    padding: var(--spacing-xs);
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

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

.toggle-password svg {
    position: static;
    width: 1.25rem;
    height: 1.25rem;
}

.form-group input:not(.input-wrapper input) {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-group input:not(.input-wrapper input):focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-row {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-end;
}

@media (max-width: 480px) {
    .form-row {
        flex-direction: column;
        align-items: stretch;
    }
    
    .form-row .btn {
        width: 100%;
    }
}

/* =============================================================================
   ALERTS
   ============================================================================= */
.alert {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.875rem;
}

.alert svg {
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #10b981;
}

/* =============================================================================
   AUTH PAGES (LOGIN/REGISTER)
   ============================================================================= */
.auth-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

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

.logo {
    width: 4rem;
    height: 4rem;
    margin: 0 auto var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-primary-light);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
}

.logo svg {
    width: 100%;
    height: 100%;
}

.auth-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

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

.auth-form {
    width: 100%;
    max-width: 360px;
    padding: var(--spacing-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
}

.auth-footer {
    margin-top: var(--spacing-lg);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.auth-footer p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* =============================================================================
   THEME TOGGLE
   ============================================================================= */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-full);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

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

.theme-toggle svg {
    width: 1.25rem;
    height: 1.25rem;
}

[data-theme="dark"] .theme-toggle .sun {
    display: block;
}

[data-theme="dark"] .theme-toggle .moon {
    display: none;
}

[data-theme="light"] .theme-toggle .sun {
    display: none;
}

[data-theme="light"] .theme-toggle .moon {
    display: block;
}

/* =============================================================================
   DASHBOARD
   ============================================================================= */
.dashboard-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo-small {
    width: 2rem;
    height: 2rem;
    color: var(--color-primary);
}

.logo-small svg {
    width: 100%;
    height: 100%;
}

.app-title {
    font-weight: 600;
    font-size: 1.125rem;
}

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

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-name {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
}

.badge-admin {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

@media (max-width: 480px) {
    .user-name {
        display: none;
    }
    
    .header-right .btn span {
        display: none;
    }
}

.dashboard-main {
    flex: 1;
    padding: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

.section {
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

/* =============================================================================
   CARDS
   ============================================================================= */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.create-room-card {
    background: linear-gradient(135deg, var(--bg-card), var(--bg-secondary));
}

.divider {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

/* =============================================================================
   ROOM LIST
   ============================================================================= */
.room-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.room-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.room-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 1px var(--color-primary-light);
}

.room-info {
    flex: 1;
    min-width: 0;
}

.room-name {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.room-id {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: monospace;
    margin-bottom: var(--spacing-xs);
}

.room-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.room-meta svg {
    width: 1rem;
    height: 1rem;
}

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

.room-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-left: var(--spacing-md);
}

/* =============================================================================
   EMPTY STATE
   ============================================================================= */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-muted);
}

.empty-state svg {
    width: 4rem;
    height: 4rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* =============================================================================
   ERROR PAGE
   ============================================================================= */
.error-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.error-content {
    text-align: center;
    max-width: 400px;
}

.error-icon {
    width: 5rem;
    height: 5rem;
    margin: 0 auto var(--spacing-lg);
    color: var(--color-error);
}

.error-icon svg {
    width: 100%;
    height: 100%;
}

.error-content h1 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.error-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* =============================================================================
   RESPONSIVE UTILITIES
   ============================================================================= */
.mobile-only {
    display: none;
}

@media (max-width: 768px) {
    .mobile-only {
        display: flex;
    }
    
    .desktop-only {
        display: none;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    .control-btn {
        min-height: 48px;
        min-width: 48px;
    }
}