/**
 * Sadie's F1 Pitwall - Main Stylesheet
 * Mobile-First Design
 */

@import url('variables.css');

/* ============================================
   RESET & BASE
   ============================================ */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-dark);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-display);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-base); }
h6 { font-size: var(--font-size-sm); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

a {
    color: var(--secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--secondary-light);
}

small {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

code, pre {
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
}

code {
    background: var(--bg-elevated);
    padding: 2px 6px;
    border-radius: var(--border-radius-sm);
}

/* ============================================
   LAYOUT
   ============================================ */

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-height: 100dvh;
    padding-bottom: calc(var(--nav-height) + var(--safe-area-bottom));
}

.main-content {
    flex: 1;
    padding: var(--spacing-md);
    padding-top: calc(var(--header-height) + var(--spacing-md));
    max-width: var(--max-content-width);
    margin: 0 auto;
    width: 100%;
}

.container {
    width: 100%;
    max-width: var(--max-content-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
    .grid-cols-2, .grid-cols-3, .grid-cols-4 {
        grid-template-columns: 1fr;
    }
}

/* Flexbox Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.flex-1 { flex: 1; }

/* ============================================
   HEADER
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    z-index: var(--z-fixed);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-md);
    padding-top: var(--safe-area-top);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.header-logo {
    height: 32px;
    width: auto;
}

.header-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-left: var(--spacing-sm);
}

.header-status {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.live-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 4px 10px;
    background: var(--danger);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    animation: pulse 2s ease-in-out infinite;
}

.live-indicator::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--text-primary);
    border-radius: 50%;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* ============================================
   BOTTOM NAVIGATION (Mobile)
   ============================================ */

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(var(--nav-height) + var(--safe-area-bottom));
    padding-bottom: var(--safe-area-bottom);
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    z-index: var(--z-fixed);
    display: flex;
    justify-content: space-around;
    align-items: stretch;
}

.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm);
    color: var(--text-muted);
    text-decoration: none;
    transition: all var(--transition-fast);
    position: relative;
}

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

.nav-item.active::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 3px;
    background: var(--gradient-brand);
    border-radius: 0 0 3px 3px;
}

.nav-icon {
    font-size: 24px;
    margin-bottom: 2px;
}

.nav-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
}

/* ============================================
   CARDS
   ============================================ */

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--border-light);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

.card-body {
    /* Default body styles */
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 10px 20px;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-brand);
    color: var(--text-primary);
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--border-light);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
}

.btn-sm {
    padding: 6px 12px;
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: 14px 28px;
    font-size: var(--font-size-base);
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--border-radius-md);
}

.btn-icon.btn-sm {
    width: 32px;
    height: 32px;
}

/* ============================================
   TIMING TABLE
   ============================================ */

.timing-table {
    width: 100%;
    border-collapse: collapse;
}

.timing-row {
    display: grid;
    grid-template-columns: 40px 1fr 80px 60px 50px;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
    transition: background var(--transition-fast);
}

.timing-row:hover {
    background: var(--bg-elevated);
}

.timing-row.highlighted {
    background: rgba(107, 33, 168, 0.1);
    border-left: 3px solid var(--primary);
}

.position {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    text-align: center;
}

.position-1 { color: #FFD700; }
.position-2 { color: #C0C0C0; }
.position-3 { color: #CD7F32; }

.driver-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.team-color {
    width: 4px;
    height: 32px;
    border-radius: 2px;
}

.driver-name {
    font-weight: var(--font-weight-semibold);
}

.driver-team {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.gap-time {
    font-family: var(--font-family-mono);
    font-size: var(--font-size-sm);
    text-align: right;
}

.tire-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--text-inverse);
}

.tire-badge.soft { background: var(--tire-soft); }
.tire-badge.medium { background: var(--tire-medium); }
.tire-badge.hard { background: var(--tire-hard); color: var(--text-inverse); }
.tire-badge.intermediate { background: var(--tire-intermediate); }
.tire-badge.wet { background: var(--tire-wet); }

.tire-age {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-left: 2px;
}

.sector-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.sector-indicator.purple { background: var(--sector-purple); }
.sector-indicator.green { background: var(--sector-green); }
.sector-indicator.yellow { background: var(--sector-yellow); }

/* ============================================
   LAP TIME DISPLAY
   ============================================ */

.lap-time {
    font-family: var(--font-family-mono);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
}

.lap-time.fastest {
    color: var(--sector-purple);
}

.lap-time.personal-best {
    color: var(--sector-green);
}

.lap-time-large {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
}

/* ============================================
   SESSION SELECTOR
   ============================================ */

.session-selector {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

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

.session-btn {
    flex-shrink: 0;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

/* ============================================
   WEATHER WIDGET
   ============================================ */

.weather-widget {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-card);
    border-radius: var(--border-radius-md);
}

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

.weather-icon {
    font-size: 20px;
}

.weather-value {
    font-weight: var(--font-weight-semibold);
}

.weather-label {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* ============================================
   FLAG STATUS
   ============================================ */

.flag-banner {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: center;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.flag-banner.green {
    background: var(--success);
    color: var(--text-primary);
}

.flag-banner.yellow {
    background: var(--warning);
    color: var(--text-inverse);
}

.flag-banner.red {
    background: var(--danger);
    color: var(--text-primary);
}

.flag-banner.safety-car {
    background: var(--warning);
    color: var(--text-inverse);
}

.flag-banner.vsc {
    background: linear-gradient(90deg, var(--warning) 50%, var(--success) 50%);
    color: var(--text-inverse);
}

/* ============================================
   LOADING STATES
   ============================================ */

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.skeleton {
    background: linear-gradient(90deg, var(--bg-elevated) 25%, var(--bg-hover) 50%, var(--bg-elevated) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--border-radius-sm);
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */

.toast-container {
    position: fixed;
    top: calc(var(--header-height) + var(--spacing-md));
    right: var(--spacing-md);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    animation: slideIn 0.3s ease;
}

.toast.success { border-left: 4px solid var(--success); }
.toast.warning { border-left: 4px solid var(--warning); }
.toast.error { border-left: 4px solid var(--danger); }
.toast.info { border-left: 4px solid var(--info); }

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

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */

.hide-mobile {
    display: none;
}

@media (min-width: 768px) {
    .hide-mobile {
        display: block;
    }
    
    .hide-desktop {
        display: none;
    }
    
    .main-content {
        padding: var(--spacing-lg);
        padding-top: calc(var(--header-height) + var(--spacing-lg));
    }
    
    .timing-row {
        grid-template-columns: 50px 1fr 100px 80px 80px 60px;
    }
}

@media (min-width: 1024px) {
    /* Desktop sidebar layout could go here */
    .app-container {
        padding-bottom: 0;
    }
    
    .bottom-nav {
        display: none;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }

.bg-card { background: var(--bg-card); }
.bg-elevated { background: var(--bg-elevated); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }

.rounded { border-radius: var(--border-radius-md); }
.rounded-lg { border-radius: var(--border-radius-lg); }
.rounded-full { border-radius: var(--border-radius-full); }

.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.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;
}