/**
 * Filename: main.css
 * Purpose: Main stylesheet with base styles and global utilities
 * Author: VTT Development Team
 * Created: 2025-11-07
 * Last Modified: 2025-11-07
 * 
 * Description:
 * Contains base styles, typography, colors, layout utilities,
 * and common components used throughout the application.
 */

/* ==========================================================================
   CSS Reset & Base Styles
   ========================================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
    min-height: 100%;
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    margin-bottom: 1rem;
    font-weight: 600;
    line-height: 1.2;
    color: #2c3e50;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

p {
    margin-bottom: 1rem;
}

a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: #2980b9;
    text-decoration: underline;
}

/* ==========================================================================
   Layout Containers
   ========================================================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==========================================================================
   Header
   ========================================================================== */

.main-header {
    background-color: #2c3e50;
    color: white;
    padding: 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

.main-header h1 {
    color: white;
    margin: 0;
    font-size: 1.5rem;
}

.header-logo {
    height: 100px;
    width: auto;
    display: block;
}

.user-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.user-nav a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.2s ease;
}

.user-nav a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    text-decoration: none;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    line-height: 1.5;
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

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

/* Button Variants */
.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-secondary {
    background-color: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
}

.btn-success {
    background-color: #27ae60;
    color: white;
}

.btn-success:hover {
    background-color: #229954;
}

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
}

/* Button Sizes */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-block {
    display: block;
    width: 100%;
}

/* ==========================================================================
   Forms
   ========================================================================== */

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #2c3e50;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-hint {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: #7f8c8d;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-check input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.form-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

/* ==========================================================================
   Alerts
   ========================================================================== */

.alert {
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    border-radius: 4px;
    border-left: 4px solid;
}

.alert-success {
    background-color: #d4edda;
    border-color: #27ae60;
    color: #155724;
}

.alert-error {
    background-color: #f8d7da;
    border-color: #e74c3c;
    color: #721c24;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #f39c12;
    color: #856404;
}

.alert-info {
    background-color: #d1ecf1;
    border-color: #3498db;
    color: #0c5460;
}

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.card-header {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #ecf0f1;
}

.card-header h3 {
    margin-bottom: 0;
}

/* ==========================================================================
   Dashboard Styles
   ========================================================================== */

.dashboard-container {
    padding: 2rem 0;
    min-height: calc(100vh - 80px);
}

.sessions-list {
    margin-bottom: 2rem;
}

.session-card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: box-shadow 0.2s ease;
}

.session-card:hover {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.session-card.inactive {
    opacity: 0.7;
}

.session-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.session-header h3 {
    margin-bottom: 0;
}

.session-role {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
}

.role-gm {
    background-color: #f39c12;
    color: white;
}

.role-player {
    background-color: #3498db;
    color: white;
}

.session-info {
    margin-bottom: 1rem;
}

.session-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1rem;
    color: #7f8c8d;
    font-size: 0.9rem;
}

.session-join-code {
    background-color: #ecf0f1;
    padding: 1rem;
    border-radius: 4px;
    margin-top: 0.5rem;
}

.join-code {
    display: inline-block;
    font-family: 'Courier New', monospace;
    font-size: 1.25rem;
    font-weight: bold;
    background-color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    border: 2px solid #3498db;
    color: #2c3e50;
    margin: 0 0.5rem;
}

.session-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.dashboard-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.action-card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
}

.action-card h3 {
    margin-top: 0;
}

.inline-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.hint {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: #7f8c8d;
    text-align: center;
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: #7f8c8d;
}

/* ==========================================================================
   Account Settings
   ========================================================================== */

.account-container {
    padding: 2rem 0;
    min-height: calc(100vh - 80px);
}

.settings-section {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 2rem;
    margin-bottom: 2rem;
}

.settings-section h3 {
    margin-top: 0;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid #ecf0f1;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.info-item label {
    display: block;
    font-size: 0.875rem;
    color: #7f8c8d;
    margin-bottom: 0.25rem;
}

.info-value {
    font-size: 1.125rem;
    font-weight: 500;
    color: #2c3e50;
}

.settings-form {
    max-width: 500px;
}

.danger-zone {
    border: 2px solid #e74c3c;
}

.danger-zone h3 {
    color: #e74c3c;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

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

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

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 768px) {
    .main-header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .user-nav {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .session-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .session-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .session-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .session-actions .btn {
        width: 100%;
    }
    
    .dashboard-actions {
        grid-template-columns: 1fr;
    }
    
    .info-grid {
        grid-template-columns: 1fr;
    }
}