/* CSS Variables for consistent theming */
:root {
    --color-primary: #8B4513;
    --color-secondary: #D2691E;
    --color-accent: #FF8C00;
    --color-warning: #FFA500;
    --color-success: #FFD700;
    --color-danger: #dc3545;
    --color-white: #ffffff;
    --color-light: #f8f9fa;
    --color-dark: #343a40;
    --color-gray: #6c757d;
    --color-border: #dee2e6;
    
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-xxl: 32px;
    
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    --border-radius: 8px;
    --border-radius-sm: 4px;
    --border-radius-lg: 12px;
    
    --box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    --box-shadow-lg: 0 4px 8px rgba(0, 0, 0, 0.15);
    
    --transition: all 0.3s ease;
    --header-height: 140px;
    --bottom-nav-height: 72px;
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding-top: var(--header-height);
    padding-bottom: calc(var(--bottom-nav-height) + var(--spacing-lg));
    scroll-padding-top: var(--header-height);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    background: var(--color-white);
    color: var(--color-dark);
    padding: var(--spacing-sm) 0;
    box-shadow: var(--box-shadow-lg);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 150;
    border-bottom: 3px solid var(--color-primary);
}
.black-bar {
position: fixed;
bottom: 0;
left: 0;
right: 0;
height: 30px;
background-color: #000000;
z-index: 1001;
}

.header__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.header__title img {
    height: 100px;
    width: auto;
    object-fit: contain;
}

.header__icon {
    font-size: var(--font-size-xxl);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.header__nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.nav__btn {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    min-width: 100px;
}

.nav__btn:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.nav__btn--active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

/* Main Content */
.main {
    flex: 1;
    padding: var(--spacing-xl) 0;
}
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height);
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.08);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 0 var(--spacing-lg);
    z-index: 140;
    margin-bottom: 80px;
}

.bottom-nav__btn {
    background: none;
    border: none;
    color: var(--color-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    min-width: auto;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-weight: 600;
}

.bottom-nav__btn .bottom-nav__icon {
    width: 24px;
    height: 24px;
}

.bottom-nav__btn.nav__btn--active {
    background: rgba(139, 69, 19, 0.1);
    color: var(--color-secondary);
}

.bottom-nav__label {
    font-size: var(--font-size-sm);
}


/* Tab Content */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

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

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

/* Section Titles */
.section__title {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    position: relative;
}

.section__title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--color-accent);
    border-radius: 2px;
}

.subsection__title {
    font-size: var(--font-size-lg);
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--color-accent);
    padding-left: var(--spacing-md);
}

/* Forms */
.route-form {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    margin-bottom: var(--spacing-xl);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--color-dark);
}

.form-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(139, 69, 19, 0.1);
}

.form-input:invalid {
    border-color: var(--color-danger);
}

/* Waypoints */
.waypoints-container {
    margin-bottom: var(--spacing-md);
}

.waypoint-item {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    align-items: center;
}

.waypoint-input {
    flex: 1;
    padding: var(--spacing-sm);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

.btn-remove-waypoint {
    background: var(--color-danger);
    color: var(--color-white);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: var(--font-size-lg);
    line-height: 1;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-remove-waypoint:hover {
    background: #c82333;
    transform: scale(1.1);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    text-align: center;
    min-width: 120px;
}

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

.btn--primary:hover {
    background: #7a3d11;
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-lg);
}

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

.btn--secondary:hover {
    background: #b8571a;
    transform: translateY(-2px);
}

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

.btn--danger:hover {
    background: #c82333;
    transform: translateY(-2px);
}

/* Routes Grid */
.routes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.route-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 2px solid transparent;
    position: relative;
}

.route-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--box-shadow-lg);
    border-color: var(--color-accent);
}

.route-card--selected {
    border-color: var(--color-success);
    background: rgba(255, 215, 0, 0.05);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.2);
}

.route-card__badge {
    position: absolute;
    top: -10px;
    right: -10px;
    background: var(--color-success);
    color: var(--color-dark);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 600;
    box-shadow: var(--box-shadow);
}

.route-card__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.route-card__title {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    margin: 0;
}

.route-card__distance {
    background: var(--color-accent);
    color: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.route-card__waypoints {
    margin-bottom: var(--spacing-md);
}

.route-card__waypoints h4 {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.waypoint-list {
    list-style: none;
    padding: 0;
}

.waypoint-list li {
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
    color: var(--color-gray);
}

.waypoint-list li:last-child {
    border-bottom: none;
}

.waypoint-list li::before {
    content: '📍';
    margin-right: var(--spacing-xs);
}

.route-card__actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: space-between;
}

.btn--small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
    min-width: auto;
}

/* Walk Section */
.walk-section {
    max-width: 800px;
    margin: 0 auto;
}

.walk-status {
    background: var(--color-white);
    padding: var(--spacing-xxl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.status-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.status-message h3 {
    margin: 0 0 var(--spacing-md) 0;
}

.status-message p {
    margin: 0;
    line-height: 1.8;
}

.walk-controls {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
}

.route-info {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-border);
}

.route-name {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.route-distance {
    color: var(--color-secondary);
    font-weight: 600;
}

/* Map Container */
.map-container {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.walk-map {
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    background: var(--color-light);
    max-width: 100%;
    height: auto;
}

.map-legend {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.legend-color--start {
    background: var(--color-success);
}

.legend-color--current {
    background: var(--color-accent);
}

.legend-color--end {
    background: var(--color-danger);
}

/* Timer Display */
.timer-display {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.timer-time {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-family: 'Courier New', monospace;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.timer-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* Waypoints Progress */
.waypoints-progress h4 {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.waypoints-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.waypoint-progress {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm);
    background: var(--color-light);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.waypoint-progress--completed {
    background: rgba(255, 215, 0, 0.2);
    border-left: 4px solid var(--color-success);
}

.waypoint-progress--current {
    background: rgba(255, 140, 0, 0.2);
    border-left: 4px solid var(--color-accent);
}

.waypoint-status {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    margin-right: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-white);
}

.waypoint-status--completed {
    background: var(--color-success);
}

.waypoint-status--current {
    background: var(--color-accent);
}

.waypoint-status--pending {
    background: var(--color-gray);
}

/* History Section */
.history-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    text-align: center;
    border-top: 4px solid var(--color-accent);
}

.stat-number {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    color: var(--color-gray);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.history-controls {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-xxl);
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    color: var(--color-gray);
}

.empty-state p {
    font-size: var(--font-size-lg);
    margin: 0;
}

/* Help Banner */
.help-banner {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.15), rgba(255, 140, 0, 0.15));
    border-left: 4px solid var(--color-success);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    color: var(--color-dark);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.help-banner strong {
    color: var(--color-primary);
    font-size: var(--font-size-base);
}

/* FAQ Section */
.faq-section {
    max-width: 900px;
    margin: 0 auto;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.faq-item {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--box-shadow);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.faq-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--box-shadow-lg);
}

.faq-question {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.faq-answer {
    color: var(--color-gray);
    font-size: var(--font-size-sm);
}

.history-item {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    border-left: 4px solid var(--color-accent);
    transition: var(--transition);
}

.history-item:hover {
    transform: translateX(4px);
    box-shadow: var(--box-shadow-lg);
}

.history-item__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.history-item__title {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    margin: 0;
}

.history-item__date {
    color: var(--color-gray);
    font-size: var(--font-size-sm);
}

.history-item__stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
}

.history-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 80px;
}

.history-stat__value {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-secondary);
}

.history-stat__label {
    font-size: var(--font-size-sm);
    color: var(--color-gray);
}

/* Footer */
.footer {
    background: var(--color-primary);
    color: var(--color-white);
    text-align: center;
    padding: var(--spacing-md) 0;
    margin-top: auto;
    margin-bottom: 60px;
}

.footer__text {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    z-index: 9999;
    color: var(--color-white);
}

.loading-overlay.show {
    display: flex;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid var(--color-white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Notification System */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--color-success);
    color: var(--color-dark);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
    display: none;
    align-items: center;
    gap: var(--spacing-sm);
    z-index: 1000;
    max-width: 300px;
    animation: slideIn 0.3s ease-out;
}

.notification.show {
    display: flex;
}

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

.notification.warning {
    background: var(--color-warning);
    color: var(--color-dark);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.notification__message {
    flex: 1;
    font-size: var(--font-size-sm);
}

.notification__close {
    background: none;
    border: none;
    color: inherit;
    font-size: var(--font-size-lg);
    cursor: pointer;
    padding: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --header-height: 80px;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .header__title {
        font-size: var(--font-size-lg);
        gap: var(--spacing-sm);
    }
    
    .header__title img {
        height: 100px;
    }
    
    /* Hide header navigation on mobile - use bottom nav instead */
    .header__nav {
        display: none !important;
    }
    
    .nav__btn {
        min-width: 80px;
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .routes-grid {
        grid-template-columns: 1fr;
    }
    
    .timer-time {
        font-size: 2rem;
    }
    
    .timer-controls {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        min-width: 100px;
    }
    
    .history-item__header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .history-item__stats {
        justify-content: space-around;
    }
    
    .map-legend {
        flex-direction: column;
        align-items: center;
    }
    
    .notification {
        left: 20px;
        right: 20px;
        max-width: none;
    }
}

@media (max-width: 480px) {
    :root {
        --header-height: 140px;
    }

    .main {
        padding: var(--spacing-md) 0;
    }
    
    .route-form,
    .walk-controls,
    .history-item {
        padding: var(--spacing-md);
    }
    
    .timer-time {
        font-size: 1.5rem;
    }
    
    .history-stats {
        grid-template-columns: 1fr;
    }
    
    .waypoint-item {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn-remove-waypoint {
        align-self: flex-end;
        margin-top: var(--spacing-xs);
    }
}

/* Print Styles */
@media print {
    .header__nav,
    .btn,
    .notification,
    .loading-overlay,
    .bottom-nav {
        display: none !important;
    }
@media (min-width: 1024px) {
    .bottom-nav {
        display: none;
    }

    body {
        padding-bottom: var(--spacing-xl);
    }
}
    
    .main {
        padding: 0;
    }
    
    .tab-content {
        display: block !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .route-card,
    .history-item {
        border: 1px solid #ccc;
        break-inside: avoid;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --color-border: #000;
        --box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    }
    
    .form-input,
    .waypoint-input {
        border-width: 3px;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .header__icon {
        animation: none;
    }
}

/* Focus Styles for Accessibility */
.btn:focus,
.form-input:focus,
.waypoint-input:focus,
.nav__btn:focus {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}