/* Personal Fitness Tracker - Main Stylesheet */

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4CAF50;
    --secondary-color: #2196F3;
    --danger-color: #f44336;
    --warning-color: #ff9800;
    --success-color: #4CAF50;
    --dark-color: #333;
    --light-bg: #f5f5f5;
    --border-color: #ddd;
    --shadow: 0 2px 4px rgba(0,0,0,0.1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-bg);
}

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

/* Navigation */
.navbar {
    background-color: white;
    box-shadow: var(--shadow);
    padding: 1rem 0;
    margin-bottom: 2rem;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--dark-color);
    text-decoration: none;
    transition: color 0.3s;
}

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

/* Main Content */
main {
    min-height: calc(100vh - 200px);
    padding: 2rem 0;
}

/* Footer */
.footer {
    background-color: var(--dark-color);
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
}

/* Cards */
.card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
}

.card h2, .card h3 {
    margin-bottom: 1rem;
    color: var(--dark-color);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    font-size: 1rem;
    transition: all 0.3s;
}

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

.btn-primary:hover {
    background-color: #45a049;
}

.btn-secondary {
    background-color: #757575;
    color: white;
}

.btn-secondary:hover {
    background-color: #616161;
}

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

.btn-danger:hover {
    background-color: #da190b;
}

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

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

.form-control,
.form-control-sm {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
}

.form-control:focus,
.form-control-sm:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-control-sm {
    padding: 0.4rem;
    font-size: 0.9rem;
}

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

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

textarea.form-control {
    resize: vertical;
}

small {
    display: block;
    color: #666;
    margin-top: 0.25rem;
    font-size: 0.875rem;
}

/* Authentication Pages */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.auth-box {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 450px;
}

.auth-box h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.demo-credentials {
    background-color: #f9f9f9;
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 4px;
    margin-top: 1.5rem;
}

.demo-credentials h4 {
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.demo-credentials p {
    margin: 0.25rem 0;
    font-size: 0.9rem;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

/* Dashboard */
.dashboard h1 {
    margin-bottom: 2rem;
    color: var(--dark-color);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-top: 0.5rem;
}

.quick-actions {
    margin: 2rem 0;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Charts */
.chart-container,
.chart-box {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin: 2rem 0;
}

.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

canvas {
    max-width: 100%;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.table th,
.table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table thead {
    background-color: #f5f5f5;
}

.table tbody tr:hover {
    background-color: #f9f9f9;
}

.table-borderless td {
    border: none;
    padding: 0.5rem;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.6rem;
    font-size: 0.875rem;
    border-radius: 4px;
    font-weight: 500;
}

.badge-large {
    padding: 0.5rem 1rem;
    font-size: 1rem;
}

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

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

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

.badge-admin {
    background-color: #9C27B0;
    color: white;
}

.badge-trainer {
    background-color: #FF5722;
    color: white;
}

.badge-user {
    background-color: #2196F3;
    color: white;
}

.badge-tip {
    background-color: #FFC107;
    color: #333;
}

.badge-routine {
    background-color: #4CAF50;
    color: white;
}

/* Page Headers */
.page-header {
    margin-bottom: 2rem;
}

.page-header h1 {
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.page-header p {
    color: #666;
    font-size: 1.1rem;
}

/* Homepage */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-align: center;
    padding: 4rem 2rem;
    border-radius: 8px;
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.features {
    margin: 3rem 0;
}

.features h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--dark-color);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    text-align: center;
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.cta-section {
    background-color: white;
    text-align: center;
    padding: 3rem 2rem;
    border-radius: 8px;
    margin: 3rem 0;
}

.cta-section h2 {
    margin-bottom: 1rem;
}

.cta-box {
    background-color: var(--light-bg);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    margin: 2rem 0;
}

/* Content Pages */
.filter-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.content-grid {
    display: grid;
    gap: 1.5rem;
}

.content-card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

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

.content-header h3 {
    flex: 1;
    margin-right: 1rem;
}

.content-body {
    margin: 1rem 0;
    line-height: 1.8;
    color: #333;
}

.content-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

/* Content Detail */
.content-detail {
    max-width: 900px;
    margin: 0 auto;
}

.back-link {
    display: inline-block;
    margin-bottom: 1rem;
    color: var(--primary-color);
    text-decoration: none;
}

.back-link:hover {
    text-decoration: underline;
}

.content-main {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.content-meta {
    color: #666;
    margin: 1rem 0;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

/* Feedback */
.feedback-section {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.comment-form {
    background-color: #f9f9f9;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.feedback-list {
    margin-top: 2rem;
}

.feedback-item {
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 1rem;
    background-color: #fafafa;
}

.feedback-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.feedback-date {
    color: #666;
    font-size: 0.9rem;
}

.feedback-comment {
    margin: 1rem 0;
}

.trainer-reply {
    background-color: #e3f2fd;
    padding: 1rem;
    border-left: 3px solid var(--secondary-color);
    margin-top: 1rem;
    border-radius: 4px;
}

/* Trainer Feedback Management */
.feedback-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.feedback-card.pending {
    border-left: 4px solid var(--warning-color);
}

.feedback-card.replied {
    border-left: 4px solid var(--success-color);
}

.feedback-meta {
    color: #666;
    margin: 0.5rem 0;
}

.user-comment {
    background-color: #f9f9f9;
    padding: 1rem;
    border-radius: 4px;
    margin: 1rem 0;
}

.trainer-reply-display {
    background-color: #e8f5e9;
    padding: 1rem;
    border-radius: 4px;
    margin: 1rem 0;
}

.reply-form {
    margin-top: 1rem;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    text-align: center;
}

.stat-card h3 {
    color: #666;
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

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

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-muted {
    color: #666;
}

.mt-3 {
    margin-top: 1rem;
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: #666;
}

/* Form Container */
.form-container {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.recent-logs,
.logs-table {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin: 2rem 0;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .dashboard-grid,
    .stats-grid,
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .charts-container {
        grid-template-columns: 1fr;
    }
    
    .content-footer {
        flex-direction: column;
        gap: 1rem;
        align-items: start;
    }
    
    .feedback-header {
        flex-direction: column;
        gap: 0.5rem;
        align-items: start;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .hero {
        padding: 2rem 1rem;
    }
    
    .auth-box {
        padding: 1.5rem;
    }
}