/* Core Design System & Styling */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-base: #f4f6fa;
    --bg-surface: #ffffff;
    --bg-surface-glass: rgba(255, 255, 255, 0.85);
    --border-color: rgba(0, 0, 0, 0.08);
    --border-highlight: rgba(122, 0, 255, 0.15);
    
    --primary: #FF0055;
    --primary-glow: rgba(255, 0, 85, 0.15);
    --secondary: #7A00FF;
    --secondary-glow: rgba(122, 0, 255, 0.15);
    --accent: #E6B800;
    --success: #00C853;
    
    --text-primary: #1C1C24;
    --text-secondary: #606075;
    --text-muted: #9E9EAF;
    
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --tabbar-height: 72px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-base);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    padding-bottom: calc(var(--tabbar-height) + 20px);
}

/* Glassmorphism utility */
.glass-card {
    background: var(--bg-surface-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 20px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.08);
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.glass-card:active {
    transform: scale(0.99);
}

/* Neon Glow Gradients */
.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.text-gradient {
    background: linear-gradient(135deg, #FF0055, #A044FF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Header */
header {
    padding: 20px;
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(244, 246, 250, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-title {
    font-size: 1.4rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 10px;
}

.app-logo {
    width: 32px;
    height: 32px;
}

/* Bottom Tab Bar Navigation */
.tabbar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--tabbar-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1000;
    padding-bottom: env(safe-area-inset-bottom);
}

.tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.75rem;
    font-weight: 500;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    width: 25%;
    height: 100%;
    justify-content: center;
    transition: color 0.2s ease;
}

.tab-item svg {
    width: 22px;
    height: 22px;
    fill: currentColor;
    transition: transform 0.2s ease;
}

.tab-item.active {
    color: var(--primary);
}

.tab-item.active svg {
    transform: translateY(-2px);
    fill: var(--primary);
    filter: drop-shadow(0 2px 8px var(--primary-glow));
}

/* Screens Wrapper */
.screen {
    display: none;
    padding: 20px;
    animation: fadeIn 0.3s ease-in-out;
}

.screen.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Date / Day Navigator Card */
.day-navigator {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.nav-btn {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    outline: none;
}

.nav-btn:active {
    background: var(--primary);
    border-color: var(--primary);
}

.current-day-info {
    text-align: center;
}

.current-day-title {
    font-size: 1.1rem;
    font-weight: 700;
}

.current-week-subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* Card Sections */
.section-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 25px 0 15px 0;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
}

.section-title:first-of-type {
    margin-top: 0;
}

/* Checklist Items */
.check-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.check-item:last-child {
    border-bottom: none;
}

.checkbox-container {
    display: block;
    position: relative;
    padding-left: 30px;
    margin-bottom: 0;
    cursor: pointer;
    font-size: 0.95rem;
    user-select: none;
    width: 100%;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 22px;
    width: 22px;
    background-color: var(--bg-surface);
    border: 2px solid var(--text-muted);
    border-radius: 6px;
    transition: all 0.2s ease;
}

.checkbox-container:hover input ~ .checkmark {
    border-color: var(--primary);
}

.checkbox-container input:checked ~ .checkmark {
    background-color: var(--success);
    border-color: var(--success);
    box-shadow: 0 0 8px rgba(0, 230, 118, 0.4);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 7px;
    top: 3px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2.5px 2.5px 0;
    transform: rotate(45deg);
}

.check-text {
    color: var(--text-primary);
    transition: color 0.2s ease, text-decoration 0.2s ease;
}

.checkbox-container input:checked ~ .check-text {
    color: var(--text-secondary);
    text-decoration: line-through;
}

.meal-label {
    display: block;
    font-size: 0.75rem;
    color: var(--accent);
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 2px;
}

/* Workout details card */
.workout-card {
    border-left: 4px solid var(--primary);
    position: relative;
    overflow: hidden;
}

.workout-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.workout-type {
    font-size: 0.8rem;
    font-weight: 700;
    background: rgba(255, 0, 85, 0.15);
    color: var(--primary);
    padding: 4px 8px;
    border-radius: 6px;
    text-transform: uppercase;
}

.workout-duration {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.workout-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.workout-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Planning page styles */
.block-selector {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 10px;
    margin-bottom: 20px;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
}

.block-selector::-webkit-scrollbar {
    display: none;
}

.block-pill {
    flex: 0 0 auto;
    scroll-snap-align: start;
    padding: 8px 16px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.block-pill.active {
    background: var(--primary);
    color: var(--text-primary);
    border-color: var(--primary);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.week-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-bottom: 20px;
}

.week-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 12px 8px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.week-card.active {
    border-color: var(--secondary);
    background: rgba(122, 0, 255, 0.1);
    box-shadow: 0 0 10px var(--secondary-glow);
}

.week-num {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text-primary);
}

.week-label {
    font-size: 0.65rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.day-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
    margin-bottom: 20px;
}

.day-btn {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px 0;
    text-align: center;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.day-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--text-primary);
    box-shadow: 0 4px 10px var(--primary-glow);
}

.set-today-btn {
    display: block;
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    border-radius: 14px;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    margin-top: 15px;
    box-shadow: 0 4px 15px rgba(255, 0, 85, 0.4);
    transition: all 0.2s ease;
}

.set-today-btn:active {
    transform: scale(0.98);
}

/* Nutrition Recipes Styling */
.menu-toggle {
    display: flex;
    background: var(--bg-surface);
    border-radius: 14px;
    padding: 4px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.menu-toggle-btn {
    flex: 1;
    text-align: center;
    padding: 10px;
    border-radius: 10px;
    border: none;
    background: none;
    color: var(--text-secondary);
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
}

.menu-toggle-btn.active {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.1);
}

.recipe-card {
    margin-bottom: 15px;
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.recipe-num {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--accent);
    flex-shrink: 0;
}

.recipe-content {
    flex: 1;
}

.recipe-title {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-bottom: 4px;
}

.recipe-detail {
    font-size: 0.95rem;
    color: var(--text-primary);
    line-height: 1.4;
}

/* Progress page styles */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 20px;
}

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

.metric-val {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-top: 5px;
}

.metric-unit {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.progress-container {
    background: var(--bg-surface);
    height: 16px;
    border-radius: 8px;
    margin: 15px 0;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-color);
}

.progress-bar {
    height: 100%;
    border-radius: 8px;
    background: linear-gradient(90deg, var(--secondary), var(--primary));
    width: 0%;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.weight-input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.weight-input {
    flex: 1;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    outline: none;
    text-align: center;
}

.weight-input:focus {
    border-color: var(--primary);
}

.weight-submit-btn {
    background: var(--primary);
    color: var(--text-primary);
    border: none;
    border-radius: 12px;
    padding: 0 20px;
    font-weight: 700;
    cursor: pointer;
}

.weight-submit-btn:active {
    transform: scale(0.97);
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 200px;
    overflow-y: auto;
}

.history-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 0.9rem;
}

.history-date {
    color: var(--text-secondary);
}

.history-val {
    font-weight: 700;
}

/* Challenge cards */
.challenge-item {
    margin-bottom: 15px;
    position: relative;
}

.challenge-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 0.7rem;
    font-weight: 800;
    padding: 4px 8px;
    border-radius: 6px;
    text-transform: uppercase;
}

.challenge-badge.active {
    background: rgba(255, 215, 0, 0.15);
    color: var(--accent);
}

.challenge-badge.completed {
    background: rgba(0, 230, 118, 0.15);
    color: var(--success);
}

.challenge-badge.pending {
    background: rgba(142, 142, 159, 0.15);
    color: var(--text-secondary);
}

.challenge-title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 6px;
    padding-right: 70px;
}

.challenge-date {
    font-size: 0.8rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 8px;
}

.challenge-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Countdown Badge */
.countdown-card {
    text-align: center;
    margin-bottom: 20px;
    border-color: var(--border-highlight);
    background: radial-gradient(circle at top right, rgba(122,0,255,0.08), transparent), var(--bg-surface-glass);
}

.countdown-title {
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    font-weight: 700;
    letter-spacing: 1px;
}

.countdown-timer {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 5px 0;
    letter-spacing: -0.5px;
}

.countdown-subtitle {
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
}

/* Help text */
.empty-state {
    text-align: center;
    color: var(--text-secondary);
    padding: 30px 10px;
    font-size: 0.95rem;
}

/* Logout Button Styling */
.logout-button {
    background: rgba(255, 0, 85, 0.1);
    border: 1px solid rgba(255, 0, 85, 0.2);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 6px 12px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.logout-button:hover {
    background: rgba(255, 0, 85, 0.2);
    box-shadow: 0 0 10px rgba(255, 0, 85, 0.2);
}

.logout-button:active {
    transform: scale(0.95);
}

/* Login Container styles */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 120px);
    padding: 20px;
    animation: fadeIn 0.4s ease-in-out;
}

.login-card {
    width: 100%;
    max-width: 400px;
    padding: 30px;
    text-align: center;
    border-color: var(--border-highlight);
    background: radial-gradient(circle at top right, rgba(255, 0, 85, 0.05), transparent), var(--bg-surface-glass);
}

.login-logo-wrapper {
    margin-bottom: 15px;
}

.login-logo {
    width: 64px;
    height: 64px;
    filter: drop-shadow(0 0 15px var(--primary-glow));
}

.login-title {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 5px;
    letter-spacing: 0.5px;
}

.login-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.input-group {
    text-align: left;
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.input-group input {
    width: 100%;
    background: var(--bg-base);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 14px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    outline: none;
    transition: all 0.2s ease;
}

.input-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 10px var(--primary-glow);
}

.login-error {
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
    text-align: left;
    min-height: 1.2rem;
}

.login-submit-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    border-radius: 14px;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(255, 0, 85, 0.3);
    transition: all 0.2s ease;
}

.login-submit-btn:hover {
    box-shadow: 0 4px 20px rgba(255, 0, 85, 0.5);
}

.login-submit-btn:active {
    transform: scale(0.98);
}

/* Modal Styling */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    justify-content: center;
    align-items: center;
    padding: 20px;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    width: 100%;
    max-width: 500px;
    background: var(--bg-surface-glass);
    border: 1px solid var(--border-highlight);
    border-radius: 24px;
    padding: 25px;
    position: relative;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    max-height: 90vh;
    overflow-y: auto;
}

.close-modal-btn {
    position: absolute;
    top: 15px;
    right: 20px;
    color: var(--text-secondary);
    font-size: 30px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.2s ease;
    z-index: 10;
}

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

.modal-image {
    width: 100%;
    border-radius: 16px;
    margin-bottom: 18px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.modal-title {
    font-size: 1.3rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.modal-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 18px;
}

.modal-steps-title {
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.modal-steps {
    display: flex;
    flex-direction: column;
    gap: 10px;
    text-align: left;
}

.modal-step-item {
    display: flex;
    gap: 12px;
    font-size: 0.88rem;
    line-height: 1.45;
}

.modal-step-num {
    background: var(--primary-glow);
    color: var(--primary);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 800;
    flex-shrink: 0;
    margin-top: 2px;
}

/* Icon style for viewing exercises */
.view-exercise-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--primary);
    background: var(--primary-glow);
    padding: 3px 6px;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-left: 8px;
    transition: all 0.2s ease;
    border: none;
    vertical-align: middle;
}

.view-exercise-icon:hover {
    background: var(--primary);
    color: var(--text-primary);
    box-shadow: 0 0 8px var(--primary-glow);
}

.view-exercise-icon svg {
    width: 12px;
    height: 12px;
    fill: currentColor;
    margin-right: 3px;
}

/* Shopping List Styles */
.shopping-item {
    transition: background 0.15s ease;
}

.shopping-item:hover {
    background: rgba(255, 255, 255, 0.02);
}

.shopping-item:last-child {
    border-bottom: none !important;
}

.shopping-badge {
    font-size: 0.75rem;
    font-weight: 800;
    padding: 4px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    transition: all 0.2s ease;
}

.shopping-badge.available {
    background: rgba(0, 230, 118, 0.15);
    color: var(--success);
    border: 1px solid rgba(0, 230, 118, 0.3);
}

.shopping-badge.buy {
    background: rgba(255, 61, 0, 0.15);
    color: var(--accent);
    border: 1px solid rgba(255, 61, 0, 0.3);
    box-shadow: 0 0 10px rgba(255, 61, 0, 0.1);
}