/* ============================================
   STRONGMAN MEALPREP DESIGN SYSTEM
   Brutalist/Industrial aesthetic
   Dark mode only, mobile-first
   ============================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
    /* Colors - Industrial palette */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #141414;
    --color-bg-tertiary: #1a1a1a;
    --color-bg-card: #1e1e1e;

    --color-text-primary: #e5e5e5;
    --color-text-secondary: #a0a0a0;
    --color-text-muted: #666666;

    --color-accent: #ff4d00;
    --color-accent-hover: #ff6a2a;
    --color-accent-muted: rgba(255, 77, 0, 0.2);

    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;

    --color-border: #2a2a2a;
    --color-border-strong: #3a3a3a;

    /* Typography */
    --font-heading: 'Impact', 'Arial Black', 'Helvetica Neue', sans-serif;
    --font-body: 'Segoe UI', system-ui, sans-serif;
    --font-mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;

    /* Layout */
    --container-max: 800px;
    --container-padding: var(--space-4);
    --border-radius: 4px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.5;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    min-height: 100vh;
    padding-bottom: var(--space-12);
}

/* ---------- Typography ---------- */
h1,
h2,
h3,
h4 {
    font-family: var(--font-body);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

h1 {
    font-size: var(--text-3xl);
}

h2 {
    font-size: var(--text-2xl);
}

h3 {
    font-size: var(--text-xl);
}

h4 {
    font-size: var(--text-lg);
}

/* ---------- Layout ---------- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--container-padding);
}

/* ---------- Navigation ---------- */
.nav-bar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    background-color: var(--color-bg-secondary);
    border-bottom: 2px solid var(--color-border);
}

.nav-brand {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    gap: var(--space-4);
}

.nav-link {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    text-decoration: none;
    padding: var(--space-2) var(--space-3);
    border: 1px solid transparent;
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--space-2);
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle .bar {
    width: 24px;
    height: 2px;
    background-color: var(--color-text-primary);
}

/* ---------- Day Toggle ---------- */
.day-toggle {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
}

.toggle-btn {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    background-color: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border: 2px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.toggle-btn:hover {
    border-color: var(--color-border-strong);
}

.toggle-btn.active {
    background-color: var(--color-accent);
    color: var(--color-bg-primary);
    border-color: var(--color-accent);
}

/* ---------- Weekplan Selector ---------- */
.weekplan-selector {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    padding: var(--space-4);
    margin-bottom: var(--space-6);
}

.weekplan-selector label {
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-secondary);
}

.weekplan-select {
    flex: 1;
    max-width: 280px;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    text-transform: uppercase;
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    border: 2px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ff4d00' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    padding-right: var(--space-8);
}

.weekplan-select:hover {
    border-color: var(--color-accent);
}

.weekplan-select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px var(--color-accent-muted);
}

.weekplan-select option {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    padding: var(--space-2);
}

/* ---------- Day Totals ---------- */
.day-totals {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-accent);
    padding: var(--space-4);
    margin-bottom: var(--space-6);
}

.totals-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-3);
}

.totals-title {
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: 700;
    letter-spacing: 0.06em;
    line-height: 1.3;
    margin: 0;
}

.totals-label {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    padding: var(--space-1) var(--space-2);
    background-color: var(--color-accent-muted);
    color: var(--color-accent);
    border-radius: var(--border-radius);
}

/* ---------- Macro Grid ---------- */
.macro-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2);
}

.macro-item {
    text-align: center;
    padding: var(--space-3);
    background-color: var(--color-bg-tertiary);
    border-radius: var(--border-radius);
}

.macro-value {
    font-family: var(--font-mono);
    font-size: var(--text-xl);
    font-weight: 700;
    display: block;
}

.macro-label {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
}

.macro-item.kcal .macro-value {
    color: var(--color-accent);
}

.macro-item.protein .macro-value {
    color: var(--color-success);
}

.macro-item.fat .macro-value {
    color: var(--color-warning);
}

.macro-item.carbs .macro-value {
    color: var(--color-info);
}

.targets-row {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-2);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* ---------- Schedule ---------- */
.schedule {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

/* ---------- Meal Card ---------- */
.meal-card {
    display: grid;
    grid-template-columns: 60px 1fr;
    gap: var(--space-3);
    padding: var(--space-4);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-left: 3px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.meal-card:hover {
    border-left-color: var(--color-accent);
    background-color: var(--color-bg-tertiary);
}

.meal-card.fixed {
    opacity: 1;
    cursor: pointer;
}

.meal-card.fixed:hover {
    border-left-color: var(--color-accent);
    background-color: var(--color-bg-tertiary);
}

.meal-time {
    font-family: var(--font-mono);
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-accent);
}

.meal-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.meal-title {
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    line-height: 1.3;
}

.meal-macros-mini {
    display: flex;
    gap: var(--space-4);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.meal-macros-mini span {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.meal-macros-mini .kcal {
    color: var(--color-accent);
}

.meal-macros-mini .protein {
    color: var(--color-success);
}

/* ---------- Page Header ---------- */
.page-header {
    text-align: center;
    padding: var(--space-6) 0;
    margin-bottom: var(--space-6);
    border-bottom: 1px solid var(--color-border);
}

.page-title {
    margin-bottom: var(--space-2);
}

.page-subtitle {
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
}

/* ---------- Shopping Actions ---------- */
.shopping-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-6);
}

.progress-text {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

/* ---------- Shopping Category ---------- */
.shopping-category {
    margin-bottom: var(--space-8);
}

.category-title {
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    line-height: 1.3;
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-2);
    border-bottom: 2px solid var(--color-accent);
    display: inline-block;
}

/* ---------- Checklist ---------- */
.checklist {
    list-style: none;
}

.checklist-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    margin-bottom: var(--space-2);
    cursor: pointer;
    transition: all var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.checklist-item:hover {
    border-color: var(--color-border-strong);
}

.checklist-item:active {
    background-color: var(--color-bg-tertiary);
}

.checklist-item.checked {
    opacity: 0.5;
}

.checklist-item.checked .checklist-text {
    text-decoration: line-through;
    color: var(--color-text-muted);
}

.checklist-checkbox {
    width: 28px;
    height: 28px;
    min-width: 28px;
    border: 2px solid var(--color-accent);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.checklist-item.checked .checklist-checkbox {
    background-color: var(--color-accent);
}

.checklist-checkbox::after {
    content: '✓';
    color: var(--color-bg-primary);
    font-weight: 700;
    font-size: var(--text-lg);
    opacity: 0;
}

.checklist-item.checked .checklist-checkbox::after {
    opacity: 1;
}

.checklist-text {
    flex: 1;
    font-size: var(--text-base);
}

.checklist-amount {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    white-space: nowrap;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-bg-primary);
    border-color: var(--color-accent);
}

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

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

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

/* ---------- Modal ---------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-overlay.open {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: var(--container-max);
    max-height: 85vh;
    background-color: var(--color-bg-secondary);
    border-top: 3px solid var(--color-accent);
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

.modal-overlay.open .modal {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding: var(--space-2) var(--space-3);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
    background-color: var(--color-bg-secondary);
}

.modal-close {
    width: 40px;
    height: 40px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    font-size: var(--text-2xl);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.modal-close:hover {
    background: var(--color-accent-muted);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.modal-content {
    padding: var(--space-6);
    overflow-y: auto;
    flex: 1;
    -webkit-overflow-scrolling: touch;
}

.recipe-header {
    margin-bottom: var(--space-6);
}

.recipe-title {
    font-family: var(--font-body);
    font-size: var(--text-xl);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    line-height: 1.3;
    margin-bottom: var(--space-2);
}

.recipe-time {
    font-family: var(--font-mono);
    color: var(--color-accent);
}

.recipe-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
}

.recipe-section {
    margin-bottom: var(--space-6);
}

.recipe-section-title {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--space-3);
    color: var(--color-accent);
}

.ingredient-list {
    list-style: none;
}

.ingredient-item {
    display: flex;
    justify-content: space-between;
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--color-border);
}

.ingredient-name {
    color: var(--color-text-primary);
}

.ingredient-amount {
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
}

.prep-list {
    list-style: none;
    counter-reset: step;
}

.prep-step {
    padding: var(--space-3) 0;
    padding-left: var(--space-8);
    border-bottom: 1px solid var(--color-border);
    position: relative;
}

.prep-step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: var(--space-3);
    width: 24px;
    height: 24px;
    background-color: var(--color-accent);
    color: var(--color-bg-primary);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
}

/* ---------- Variant Toggle in Modal ---------- */
.variant-toggle {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.variant-btn {
    flex: 1;
    padding: var(--space-2);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    text-transform: uppercase;
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.variant-btn.active {
    background-color: var(--color-accent-muted);
    color: var(--color-accent);
    border-color: var(--color-accent);
}

/* ---------- Macros Breakdown Page ---------- */
.macros-section {
    margin-top: var(--space-6);
}

.macro-col-header {
    display: grid;
    grid-template-columns: 60px 1fr repeat(4, 56px);
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.macro-col-header span:nth-child(n+3) {
    text-align: right;
}

.macros-breakdown {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.macro-row {
    display: grid;
    grid-template-columns: 60px 1fr repeat(4, 56px);
    gap: var(--space-2);
    align-items: center;
    padding: var(--space-3) var(--space-4);
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-left: 3px solid transparent;
}

.macro-row.total-row {
    border-left-color: var(--color-accent);
    background-color: var(--color-bg-tertiary);
    margin-top: var(--space-2);
    border-top: 2px solid var(--color-border-strong);
}

.macro-row.target-row {
    border-left-color: var(--color-info);
    background-color: transparent;
    opacity: 0.75;
}

.macro-row-time {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    color: var(--color-accent);
}

.macro-row-title {
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    line-height: 1.2;
}

.macro-row-val {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    text-align: right;
    color: var(--color-text-secondary);
}

.macro-row-val.kcal-val {
    color: var(--color-accent);
}

.macro-row-val.protein-val {
    color: var(--color-success);
}

.variant-badge {
    display: block;
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
    margin-top: 2px;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--color-bg-secondary);
        border-bottom: 2px solid var(--color-border);
        padding: var(--space-4);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .macro-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .weekplan-selector {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-2);
    }

    .weekplan-select {
        max-width: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: var(--space-3);
    }

    .meal-card {
        grid-template-columns: 50px 1fr;
        padding: var(--space-3);
    }

    .meal-time {
        font-size: var(--text-base);
    }

    .checklist-item {
        padding: var(--space-4);
    }

    .macro-col-header {
        grid-template-columns: 46px 1fr repeat(4, 42px);
        font-size: 0.6rem;
        padding: var(--space-1) var(--space-2);
        gap: var(--space-1);
    }

    .macro-row {
        grid-template-columns: 46px 1fr repeat(4, 42px);
        padding: var(--space-2) var(--space-2);
        gap: var(--space-1);
    }

    .macro-row-val {
        font-size: var(--text-xs);
    }

    .macro-row-title {
        font-size: var(--text-xs);
    }

    .macro-row-time {
        font-size: var(--text-xs);
    }
}

/* Large touch targets for mobile */
@media (pointer: coarse) {
    .checklist-item {
        min-height: 56px;
    }

    .checklist-checkbox {
        width: 32px;
        height: 32px;
        min-width: 32px;
    }
}