/* ============================================
   TRAINING TRACKER - FITX STYLE DESIGN
   Professional fitness studio look
   ============================================ */

/* ===== CSS VARIABLES ===== */
:root {
    /* FitX Colors - Orange/Red as primary */
    --primary: #ff4400;
    --primary-dark: #e63800;
    --primary-light: #ff6633;
    --primary-bg: rgba(255, 68, 0, 0.1);
    
    /* Neutral Colors */
    --dark: #1a1a1a;
    --darker: #0f0f0f;
    --light: #f5f5f5;
    --gray: #666666;
    --light-gray: #e0e0e0;
    --border: #2a2a2a;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #777777;
    
    /* Status Colors */
    --success: #4caf50;
    --error: #f44336;
    --warning: #ff9800;
    --info: #00bcd4;
    
    /* Spacing */
    --radius: 6px;
    --radius-sm: 4px;
    --radius-lg: 10px;
    
    /* Transitions */
    --transition: 0.2s ease;
    
    /* Shadows */
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    
    /* Font */
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

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

html { height: 100%; }

body {
    font-family: var(--font);
    background: var(--darker);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

/* ===== CONTAINER ===== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 25px 20px;
}

/* ===== HEADER ===== */
header {
    background: var(--dark);
    border-bottom: 1px solid var(--border);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

header h1 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary);
}

header h1 a {
    color: var(--primary);
    text-decoration: none;
}

header nav {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

header nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition);
    padding: 5px 0;
}

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

.user-info {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.btn-logout {
    color: var(--error) !important;
}

/* ===== FOOTER ===== */
footer {
    background: var(--dark);
    border-top: 1px solid var(--border);
    padding: 20px;
    text-align: center;
    margin-top: 50px;
}

footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===== BUTTONS ===== */
.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: background var(--transition);
    text-decoration: none;
    display: inline-block;
}

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

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition);
    text-decoration: none;
    display: inline-block;
}

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

.btn-save {
    background: var(--success);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.8rem;
    margin-right: 5px;
}

.btn-save:hover {
    background: #388e3c;
}

.btn-remove {
    background: var(--error);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.8rem;
}

.btn-remove:hover {
    background: #d32f2f;
}

/* ===== FORMS ===== */
.form-group {
    margin-bottom: 15px;
}

/* ===== CHECKBOXES ===== */
.checkbox-completed {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-control, .form-input {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    background: var(--dark);
    color: var(--text-primary);
    transition: border-color var(--transition);
}

textarea.form-control {
    min-height: 80px;
    resize: vertical;
    font-family: var(--font);
}

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

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

.form-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.form-row > * {
    flex: 1;
    min-width: 150px;
}

/* ===== SECTIONS ===== */
.section, .workout-summary, .workout-detail, .stats-preview, 
.login-box, .tab-content, .add-form, .workout-list, .stats-summary, 
.calendar-actions, .workout-notes, .error-page {
    background: var(--dark);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
}

.section h3, .workout-summary h3, .workout-detail h3, .stats-preview h3,
.tab-content h3, .workout-list h3, .stats-summary h3 {
    color: var(--primary);
    font-size: 1.2rem;
    margin-bottom: 15px;
    font-weight: 600;
}

/* ===== HEADER BAR ===== */
.header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.header-bar h2 {
    color: var(--text-primary);
    font-size: 1.4rem;
    font-weight: 600;
}

.actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* ===== HERO ===== */
.hero {
    text-align: center;
    padding: 40px 20px;
}

.hero h2 {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 10px;
    font-weight: 600;
}

.hero p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.quick-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

/* ===== LOGIN ===== */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 70vh;
    padding: 20px;
}

.login-box {
    max-width: 400px;
    width: 100%;
    text-align: center;
}

.login-box h2 {
    color: var(--primary);
    font-size: 1.6rem;
    margin-bottom: 20px;
    font-weight: 600;
}

/* ===== ALERTS ===== */
.alert {
    padding: 12px 16px;
    margin-bottom: 15px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
}

.alert.error {
    background: rgba(244, 67, 54, 0.1);
    color: var(--error);
    border: 1px solid var(--error);
}

.alert.success {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success);
    border: 1px solid var(--success);
}

/* ===== DATE BADGES ===== */
.date-list {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin: 15px 0;
}

.date-badge {
    background: var(--primary);
    color: white;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: background var(--transition);
}

.date-badge:hover {
    background: var(--primary-dark);
}

/* ===== TABLES ===== */
.exercise-table, .workout-table, .admin-table {
    width: 100%;
    border-collapse: collapse;
    margin: 15px 0;
}

.exercise-table th, .exercise-table td,
.workout-table th, .workout-table td,
.admin-table th, .admin-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.exercise-table th, .workout-table th, .admin-table th {
    background: var(--darker);
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.exercise-table tbody tr:hover,
.workout-table tbody tr:hover,
.admin-table tbody tr:hover {
    background: var(--border);
}

.exercise-table tfoot td {
    background: var(--darker);
    color: var(--primary);
    font-weight: 600;
}

/* ===== STATS ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 15px;
    margin-top: 15px;
}

.stat-card {
    background: var(--darker);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 15px;
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 5px;
    text-transform: uppercase;
}

/* ===== TRAINING CONTAINER ===== */
.training-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 20px;
    margin-bottom: 20px;
}

.exercise-selector {
    background: var(--dark);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 15px;
}

.exercise-selector h3 {
    color: var(--primary);
    font-size: 1rem;
    margin-bottom: 10px;
}

.exercise-selector select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    background: var(--darker);
    color: var(--text-primary);
    margin-bottom: 10px;
}

/* ===== ADMIN TABS ===== */
.admin-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.tab-btn {
    padding: 10px 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-bottom: 3px solid transparent;
    transition: all var(--transition);
}

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

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.add-form {
    background: var(--darker);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 15px;
    margin-bottom: 15px;
}

.add-form h4 {
    color: var(--primary);
    font-size: 0.95rem;
    margin-bottom: 10px;
}

.editable {
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
}

.editable:hover {
    background: var(--border);
}

.editable-select {
    padding: 4px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--darker);
    color: var(--text-primary);
}

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

/* ===== WORKOUT NOTES ===== */
.workout-notes {
    background: rgba(255, 68, 0, 0.1);
    border-left: 4px solid var(--primary);
    padding: 15px;
    margin-bottom: 15px;
    border-radius: var(--radius-sm);
}

.workout-notes h3 {
    color: var(--primary);
    margin-bottom: 10px;
}

/* ===== PRINT ACTIONS ===== */
.print-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 25px;
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-state h3 {
    color: var(--text-primary);
    margin-bottom: 10px;
}

/* ===== ERROR PAGE ===== */
.error-page {
    text-align: center;
    padding: 60px 20px;
}

.error-page h1 {
    font-size: 5rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 15px;
}

.error-page h2 {
    font-size: 1.4rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.error-page p {
    color: var(--text-muted);
    margin-bottom: 25px;
}

.error-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
}

/* ===== DATE FORM ===== */
.date-form {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.date-form input[type="date"] {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    background: var(--darker);
    color: var(--text-primary);
    flex: 1;
    min-width: 180px;
}

.date-form input[type="date"]:focus {
    border-color: var(--primary);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1200px) {
    .training-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 992px) {
    .hero h2 { font-size: 1.6rem; }
    .stat-value { font-size: 1.6rem; }
}

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        text-align: center;
    }
    header nav {
        flex-direction: column;
        gap: 8px;
    }
    .header-bar {
        flex-direction: column;
        align-items: flex-start;
    }
    .form-row {
        flex-direction: column;
    }
    .form-row > * {
        width: 100%;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .admin-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
    }
    .admin-table, .exercise-table, .workout-table {
        font-size: 0.8rem;
    }
    .login-box {
        padding: 25px 15px;
    }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--darker); }
::-webkit-scrollbar-thumb { 
    background: var(--border); 
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: var(--gray); }

/* ===== WEIGHT TRACKER ===== */
.chart-container {
    position: relative;
    height: 350px;
    width: 100%;
    margin: 20px 0;
}

.chart-container canvas {
    width: 100% !important;
    height: 100% !important;
}

.weight-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.weight-table th,
.weight-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.weight-table th {
    color: var(--primary);
    font-weight: 600;
    background: rgba(255, 68, 0, 0.1);
}

.weight-table tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

.weight-form {
    margin-bottom: 20px;
}

.weight-form .form-row {
    gap: 10px;
}

.weight-form input[type="date"],
.weight-form input[type="number"],
.weight-form input[type="text"] {
    flex: 1;
    min-width: 120px;
}

.weight-form input[type="number"] {
    min-width: 100px;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.8rem;
}

@media (max-width: 768px) {
    .chart-container {
        height: 280px;
    }
    
    .weight-table th,
    .weight-table td {
        padding: 10px 8px;
        font-size: 0.85rem;
    }
    
    .weight-form .form-row {
        flex-direction: column;
        gap: 10px;
    }
    
    .weight-form input,
    .weight-form button {
        width: 100%;
    }
}