:root {
    /* Colors - Genesis Minimalist */
    --bg-primary: #050505;
    --bg-secondary: #0c0c0c;
    --bg-tertiary: #111111;
    --text-primary: #ffffff;
    --text-secondary: #777777;
    --accent: #ffffff;
    --accent-dim: rgba(255, 255, 255, 0.05);
    --success: #00ff88;
    --danger: #ff4444;
    --border: #1a1a1a;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    
    /* Layout */
    --radius: 4px;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.light-theme {
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-tertiary: #f0f0f0;
    --text-primary: #000000;
    --text-secondary: #888888;
    --accent: #000000;
    --accent-dim: rgba(0, 0, 0, 0.03);
    --border: #eeeeee;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Navbar */
.top-navbar {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    height: 72px;
    padding: 0 40px;
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-weight: 900;
    letter-spacing: 8px;
    font-size: 24px;
    color: var(--text-primary);
    text-transform: uppercase;
}

.logo-text {
    border: 2px solid var(--text-primary);
    padding: 4px 12px;
    display: inline-block;
}

/* Bottom Nav Bar (Mobile & Desktop) */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    height: 72px;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    gap: 40px;
}

.bottom-nav .nav-item {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: var(--transition);
    padding: 12px 24px;
    border-radius: 4px;
}

.bottom-nav .nav-item:hover, .bottom-nav .nav-item.active {
    color: var(--text-primary);
    background-color: var(--accent-dim);
}

.nav-actions-right {
    display: flex;
    align-items: center;
}

.nav-settings-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    cursor: pointer;
    transition: var(--transition);
}

.nav-settings-btn:hover {
    color: var(--text-primary);
    border-color: var(--text-primary);
    background-color: var(--accent-dim);
}

/* Main Content */
.main-content {
    padding: 80px 40px 120px 40px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.top-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 80px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 40px;
}

h1 {
    font-size: 48px;
    font-weight: 900;
    letter-spacing: -2px;
}

.date-display {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    margin-top: 8px;
}

.progress-stats {
    display: flex;
    align-items: center;
    gap: 32px;
}

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

.stat-value {
    font-size: 24px;
    font-weight: 900;
    display: block;
}

.stat-label {
    font-size: 10px;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 2px;
    font-weight: 800;
}

/* Grid & Cards */
.weeks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(450px, 1fr));
    gap: 40px;
}

.week-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    padding: 32px;
    border-radius: var(--radius);
}

.week-container h2 {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 32px;
    display: flex;
    justify-content: space-between;
    color: var(--text-secondary);
    font-weight: 800;
}

.week-progress-mini {
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
    padding: 4px 12px;
    border-radius: 20px;
}

/* Day Rows */
.day-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.day-row {
    padding: 16px 24px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 20px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
    background-color: var(--bg-tertiary);
}

.day-row:hover {
    border-color: var(--text-secondary);
}

.day-row.completed {
    background-color: var(--bg-secondary);
    border-color: var(--border);
    opacity: 0.4;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--text-secondary);
    border-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.day-row.completed .checkbox-custom {
    background-color: var(--text-primary);
    border-color: var(--text-primary);
}

.checkbox-custom::after {
    content: '';
    width: 4px;
    height: 8px;
    border: solid var(--bg-primary);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
    display: none;
    margin-bottom: 2px;
}

.day-row.completed .checkbox-custom::after {
    display: block;
}

.day-content {
    flex-grow: 1;
}

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

.day-title {
    font-size: 15px;
    font-weight: 800;
    letter-spacing: -0.3px;
}

.day-focus {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
}

.action-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 9px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    cursor: pointer;
    padding: 6px 12px;
    border-radius: 2px;
    border: 1px solid var(--border);
}

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

/* Plan View */
.plan-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-bottom: 48px;
}

.plan-card {
    background-color: var(--bg-secondary);
    padding: 32px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.plan-card-header {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-secondary);
    font-weight: 800;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
}

.priority-list {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.priority-list li {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
}

.priority-list li::before {
    content: "→ ";
    color: var(--text-secondary);
}

.critique-content p {
    font-size: 12px;
    margin-bottom: 8px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.critique-content strong {
    color: var(--text-primary);
}

.weekly-schedule-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.schedule-day {
    background-color: var(--bg-tertiary);
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.day-name {
    font-size: 16px;
    font-weight: 900;
    margin-bottom: 12px;
}

.day-focus-tag {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 800;
    background-color: var(--bg-secondary);
    padding: 4px 10px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 16px;
    border: 1px solid var(--border);
}

.day-focus-tag.cardio { color: #44aaff; border-color: rgba(68, 170, 255, 0.2); }
.day-focus-tag.recovery { color: #ffaa44; border-color: rgba(255, 170, 68, 0.2); }
.day-focus-tag.rest { color: var(--success); border-color: rgba(0, 255, 136, 0.2); }

.day-exercises {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
    line-height: 1.5;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.stat-card {
    background-color: var(--bg-secondary);
    padding: 40px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.stat-card-header {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-secondary);
    font-weight: 800;
    margin-bottom: 32px;
}

.week-chart {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    height: 120px;
}

.chart-bar-container {
    flex: 1;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.chart-bar {
    width: 100%;
    background-color: var(--bg-tertiary);
    transition: var(--transition);
}

.chart-bar.active {
    background-color: var(--text-primary);
}

.chart-label {
    font-size: 9px;
    text-align: center;
    margin-top: 12px;
    color: var(--text-secondary);
    font-weight: 700;
}

.focus-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.focus-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.focus-info {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.focus-bar-bg {
    height: 4px;
    background-color: var(--bg-tertiary);
}

.focus-bar-fill {
    height: 100%;
    background-color: var(--text-primary);
    transition: width 0.8s ease;
}

.total-summary {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
}

.summary-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    font-weight: 700;
}

.summary-value {
    font-size: 16px;
    font-weight: 900;
}

/* Settings */
.settings-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
    max-width: 600px;
}

.settings-group {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    padding: 32px;
    border-radius: var(--radius);
}

.settings-group h3 {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
    font-weight: 800;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.setting-item label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    font-weight: 700;
}

.setting-item input, .setting-item select {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 12px;
    border-radius: 4px;
    outline: none;
    font-size: 13px;
    font-weight: 600;
}

.theme-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 800;
    text-transform: uppercase;
    cursor: pointer;
}

.switch {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 20px;
}

.switch input { opacity: 0; width: 0; height: 0; }

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--bg-tertiary);
    transition: .4s;
    border: 1px solid var(--border);
}

.slider:before {
    position: absolute;
    content: "";
    height: 12px; width: 12px;
    left: 4px; bottom: 3px;
    background-color: var(--text-secondary);
    transition: .4s;
}

input:checked + .slider { background-color: var(--text-primary); }
input:checked + .slider:before { transform: translateX(18px); background-color: var(--bg-primary); }

.btn-primary {
    background-color: var(--text-primary);
    color: var(--bg-primary);
    border: none;
    padding: 14px 32px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
    cursor: pointer;
    border-radius: 4px;
    font-size: 11px;
    transition: var(--transition);
}

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

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 10px 20px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 10px;
    border-radius: 4px;
    cursor: pointer;
}

.btn-danger-outline {
    background: none;
    border: 1px solid var(--danger);
    color: var(--danger);
    padding: 10px 20px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 10px;
    border-radius: 4px;
    cursor: pointer;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    z-index: 1000;
}

.modal-content {
    background-color: var(--bg-primary);
    width: 95%;
    max-width: 600px;
    margin: 60px auto;
    padding: 48px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

/* Mobile Navigation & Responsive */
@media (max-width: 768px) {
    .top-navbar { padding: 0 20px; height: 64px; }
    .logo { letter-spacing: 3px; font-size: 16px; }
    .bottom-nav {
        height: 64px;
        gap: 0;
        justify-content: space-around;
    }
    .nav-item { flex: 1; display: flex; align-items: center; justify-content: center; font-size: 9px; padding: 12px 0; }
    .main-content { padding: 40px 20px 100px 20px; }
    .top-header { flex-direction: column; align-items: flex-start; margin-bottom: 40px; }
    h1 { font-size: 32px; }
    .weeks-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; }
    .plan-grid { grid-template-columns: 1fr; }
    .priority-list { grid-template-columns: 1fr; }
    .modal-content { padding: 32px 24px; margin-top: 40px; }
    .nav-settings-btn { padding: 6px 12px; font-size: 9px; }
}