/* ═══════════════════════════════════════════════════════════════
   MX StopWatch Web — Premium Racing Theme
   Designed for iPhone Safari PWA
   ═══════════════════════════════════════════════════════════════ */

/* ─── CSS Variables ─── */
:root {
    --bg-primary: #0a0a12;
    --bg-secondary: #12121f;
    --bg-card: rgba(255, 255, 255, 0.04);
    --bg-card-hover: rgba(255, 255, 255, 0.07);
    --surface: #1a1a2e;
    --surface-light: #252540;

    --accent-green: #00e676;
    --accent-green-glow: rgba(0, 230, 118, 0.3);
    --accent-orange: #ff6d00;
    --accent-orange-glow: rgba(255, 109, 0, 0.3);
    --accent-purple: #7c4dff;
    --accent-purple-glow: rgba(124, 77, 255, 0.3);
    --accent-blue: #448aff;
    --accent-blue-glow: rgba(68, 138, 255, 0.3);
    --accent-red: #ff1744;

    --text-primary: #e8e8f0;
    --text-secondary: #9898b0;
    --text-muted: #5e5e78;

    --font-display: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 50%;

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
    --safe-right: env(safe-area-inset-right, 0px);
}

/* Light theme */
.theme-light {
    --bg-primary: #f0f2f5;
    --bg-secondary: #ffffff;
    --bg-card: rgba(0, 0, 0, 0.03);
    --bg-card-hover: rgba(0, 0, 0, 0.06);
    --surface: #ffffff;
    --surface-light: #f5f5f8;
    --text-primary: #1a1a2e;
    --text-secondary: #555570;
    --text-muted: #999;
}

/* ─── Base Reset ─── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    font-size: 16px;
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    height: 100%;
    overflow: hidden;
    -webkit-user-select: none;
    user-select: none;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
}

#app {
    height: 100%;
    position: relative;
}

/* ─── View System ─── */
.view {
    display: none;
    flex-direction: column;
    height: 100%;
    padding-top: var(--safe-top);
    padding-bottom: var(--safe-bottom);
    padding-left: var(--safe-left);
    padding-right: var(--safe-right);
    overflow: hidden;
}

.view.active {
    display: flex;
    animation: viewFadeIn 0.3s ease-out;
}

@keyframes viewFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ─── App Header ─── */
.app-header {
    background: linear-gradient(135deg, var(--accent-purple), #5a2dbb);
    padding: 10px 16px;
    text-align: center;
    font-size: 17px;
    font-weight: 600;
    color: #fff;
    letter-spacing: 0.5px;
    flex-shrink: 0;
    position: relative;
    z-index: 10;
}

.app-header .back-btn {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.15);
    border: none;
    color: #fff;
    font-size: 18px;
    width: 34px;
    height: 34px;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.app-header .back-btn:active {
    background: rgba(255,255,255,0.3);
    transform: translateY(-50%) scale(0.92);
}

/* ─── Main Timer Display ─── */
.timer-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 16px 12px;
    flex-shrink: 0;
}

.total-time {
    font-family: var(--font-display);
    font-size: 48px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--text-primary);
    background: var(--surface);
    padding: 16px 32px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.06);
    box-shadow: 0 4px 24px rgba(0,0,0,0.3),
                inset 0 1px 0 rgba(255,255,255,0.05);
    text-shadow: 0 0 30px rgba(255,255,255,0.1);
    min-width: 260px;
    text-align: center;
    transition: var(--transition-fast);
}

.total-time.pulse {
    animation: timerPulse 0.3s ease;
}

@keyframes timerPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

.lap-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    margin-top: 12px;
}

.current-lap, .best-lap {
    font-family: var(--font-display);
    font-size: 16px;
    color: var(--text-secondary);
}

.best-lap {
    color: var(--accent-red);
    font-weight: 600;
}

/* ─── Button Grid ─── */
.button-section {
    padding: 12px 16px;
    flex-shrink: 0;
}

.btn-row {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 10px;
}

.btn {
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 600;
    padding: 14px 28px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    color: #fff;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
    min-width: 110px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn:active {
    transform: scale(0.95);
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, transparent 50%);
    pointer-events: none;
}

.btn-start {
    background: linear-gradient(135deg, #00c853, #00e676);
    box-shadow: 0 4px 16px var(--accent-green-glow);
}

.btn-start:active {
    box-shadow: 0 2px 8px var(--accent-green-glow);
}

.btn-pause {
    background: linear-gradient(135deg, #ff6d00, #ff9100);
    box-shadow: 0 4px 16px var(--accent-orange-glow);
}

.btn-resume {
    background: linear-gradient(135deg, #00c853, #00e676);
    box-shadow: 0 4px 16px var(--accent-green-glow);
}

.btn-reset {
    background: linear-gradient(135deg, #2962ff, #448aff);
    box-shadow: 0 4px 16px var(--accent-blue-glow);
}

.btn-lap {
    background: linear-gradient(135deg, #e65100, #ff6d00);
    box-shadow: 0 4px 16px var(--accent-orange-glow);
    flex: 1;
}

.btn-sector {
    background: linear-gradient(135deg, #6200ea, #7c4dff);
    box-shadow: 0 4px 16px var(--accent-purple-glow);
    flex: 1;
}

/* ─── Lap List ─── */
.lap-list-container {
    flex: 1;
    overflow-y: auto;
    padding: 0 16px 80px;
    -webkit-overflow-scrolling: touch;
}

.lap-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.lap-header {
    font-size: 13px;
    font-weight: 600;
    color: var(--accent-purple);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 8px 0 4px;
}

.lap-item {
    font-family: var(--font-display);
    font-size: 15px;
    color: var(--text-primary);
    padding: 8px 12px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    animation: lapSlideIn 0.25s ease-out;
}

.lap-item.best-lap-item {
    background: rgba(0, 230, 118, 0.08);
    border-left: 3px solid var(--accent-green);
}

.sector-item {
    font-family: var(--font-display);
    font-size: 13px;
    color: var(--text-secondary);
    padding: 4px 12px 4px 28px;
}

.lap-divider {
    height: 1px;
    background: rgba(255,255,255,0.06);
    margin: 4px 0;
}

@keyframes lapSlideIn {
    from { opacity: 0; transform: translateX(-12px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ─── FAB / Menu ─── */
.fab {
    position: fixed;
    bottom: calc(20px + var(--safe-bottom));
    right: 20px;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--accent-purple), #5a2dbb);
    border: none;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 4px 20px var(--accent-purple-glow);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.fab:active {
    transform: scale(0.9);
}

.fab-menu {
    position: fixed;
    bottom: calc(84px + var(--safe-bottom));
    right: 20px;
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0,0,0,0.4);
    border: 1px solid rgba(255,255,255,0.08);
    min-width: 200px;
    z-index: 99;
    overflow: hidden;
    display: none;
    animation: menuFadeIn 0.2s ease-out;
}

.fab-menu.open {
    display: block;
}

@keyframes menuFadeIn {
    from { opacity: 0; transform: translateY(8px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.fab-menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    font-size: 15px;
    color: var(--text-primary);
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-family: var(--font-body);
    transition: var(--transition-fast);
}

.fab-menu-item:active {
    background: var(--bg-card-hover);
}

.fab-menu-item .icon {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

.fab-menu-divider {
    height: 1px;
    background: rgba(255,255,255,0.06);
}

.fab-menu-item.toggle-active {
    color: var(--accent-green);
}

/* ─── Modal / Dialog ─── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.hidden {
    display: none;
}

.modal {
    background: var(--surface);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255,255,255,0.08);
    box-shadow: 0 16px 48px rgba(0,0,0,0.5);
    max-width: 380px;
    width: 100%;
    overflow: hidden;
    animation: modalIn 0.3s ease-out;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.92) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-title {
    font-size: 18px;
    font-weight: 700;
    padding: 20px 20px 0;
    color: var(--text-primary);
}

.modal-body {
    padding: 16px 20px;
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.5;
}

.modal-input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 15px;
    outline: none;
    transition: var(--transition-fast);
}

.modal-input:focus {
    border-color: var(--accent-purple);
    box-shadow: 0 0 0 3px var(--accent-purple-glow);
}

.modal-actions {
    display: flex;
    gap: 8px;
    padding: 12px 20px 20px;
    justify-content: flex-end;
}

.modal-btn {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.modal-btn:active {
    transform: scale(0.95);
}

.modal-btn-primary {
    background: var(--accent-purple);
    color: #fff;
}

.modal-btn-secondary {
    background: rgba(255,255,255,0.08);
    color: var(--text-secondary);
}

.modal-btn-danger {
    background: var(--accent-red);
    color: #fff;
}

/* ─── Session List Items ─── */
.session-list {
    flex: 1;
    overflow-y: auto;
    padding: 12px 16px 80px;
    -webkit-overflow-scrolling: touch;
}

.session-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 12px;
    border: 1px solid rgba(255,255,255,0.04);
    transition: var(--transition-fast);
}

.session-card:active {
    background: var(--bg-card-hover);
}

.session-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.session-card-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.session-card-actions {
    display: flex;
    gap: 8px;
}

.session-card-btn {
    background: rgba(255,255,255,0.06);
    border: none;
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.session-card-btn:active {
    background: rgba(255,255,255,0.12);
}

.session-card-btn.delete:active {
    background: rgba(255, 23, 68, 0.2);
    color: var(--accent-red);
}

.session-card-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px 12px;
}

.session-card-meta span {
    font-size: 13px;
    color: var(--text-secondary);
}

.session-card-meta .label {
    color: var(--text-muted);
}

.session-card-meta .value {
    font-family: var(--font-display);
    font-size: 13px;
    color: var(--text-primary);
}

/* ─── Compare View ─── */
.compare-container {
    flex: 1;
    overflow-y: auto;
    padding: 12px 16px 80px;
    -webkit-overflow-scrolling: touch;
}

.compare-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 16px;
}

.compare-column {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 12px;
}

.compare-column-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--accent-purple);
    margin-bottom: 8px;
    word-break: break-word;
}

.compare-stat {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.compare-stat .val {
    font-family: var(--font-display);
    color: var(--text-primary);
}

.compare-select-btn {
    display: block;
    width: 100%;
    padding: 12px;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 14px;
    cursor: pointer;
    margin-bottom: 8px;
    text-align: left;
    transition: var(--transition-fast);
}

.compare-select-btn.selected {
    border-color: var(--accent-purple);
    background: rgba(124, 77, 255, 0.1);
    color: var(--accent-purple);
}

.compare-select-btn:active {
    transform: scale(0.98);
}

/* ─── Map View ─── */
.map-container {
    flex: 1;
    position: relative;
}

#leaflet-map {
    width: 100%;
    height: 100%;
}

.map-controls {
    position: absolute;
    bottom: calc(16px + var(--safe-bottom));
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 1000;
}

.map-btn {
    padding: 10px 18px;
    border: none;
    border-radius: var(--radius-md);
    background: var(--surface);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 2px 12px rgba(0,0,0,0.3);
    transition: var(--transition-fast);
}

.map-btn:active {
    transform: scale(0.95);
}

.map-btn.danger {
    background: var(--accent-red);
    color: #fff;
}

/* ─── Live Viewer ─── */
.live-viewer-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    -webkit-overflow-scrolling: touch;
}

.live-stats-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 16px;
    border: 1px solid rgba(255,255,255,0.04);
}

.live-stats-card h3 {
    font-size: 14px;
    color: var(--accent-purple);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.live-stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.live-stat {
    display: flex;
    flex-direction: column;
}

.live-stat .label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
}

.live-stat .value {
    font-family: var(--font-display);
    font-size: 14px;
    color: var(--text-primary);
}

.live-laps-list {
    margin-top: 16px;
}

.live-lap-entry {
    font-family: var(--font-display);
    font-size: 14px;
    color: var(--text-primary);
    padding: 8px 12px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    margin-bottom: 4px;
}

.live-sector-entry {
    font-family: var(--font-display);
    font-size: 12px;
    color: var(--text-secondary);
    padding: 3px 12px 3px 28px;
}

.live-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--accent-green);
    font-weight: 600;
}

.live-indicator .dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--accent-green);
    animation: livePulse 1.5s infinite;
}

@keyframes livePulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

/* ─── Live Session Browse List ─── */
.live-session-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    cursor: pointer;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    transition: var(--transition-fast);
}

.live-session-item:active {
    background: var(--bg-card-hover);
}

.live-session-info {
    flex: 1;
}

.live-session-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.live-session-detail {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ─── Toast Notifications ─── */
.toast {
    position: fixed;
    bottom: calc(90px + var(--safe-bottom));
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--surface);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: var(--radius-lg);
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 4px 24px rgba(0,0,0,0.4);
    border: 1px solid rgba(255,255,255,0.08);
    z-index: 300;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ─── Empty States ─── */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
}

.empty-state .icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.3;
}

.empty-state .text {
    font-size: 16px;
    color: var(--text-muted);
}

/* ─── Scrollbar Styling ─── */
::-webkit-scrollbar {
    width: 4px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1);
    border-radius: 4px;
}

/* ─── Status Bar Indicator ─── */
.status-bar {
    display: flex;
    justify-content: center;
    gap: 16px;
    padding: 6px 16px;
    background: rgba(0,0,0,0.3);
    font-size: 11px;
    color: var(--text-muted);
    flex-shrink: 0;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: var(--radius-full);
    background: var(--accent-red);
}

.status-dot.online { background: var(--accent-green); }
.status-dot.gps { background: var(--accent-orange); }
.status-dot.live { background: var(--accent-purple); animation: livePulse 1.5s infinite; }

/* ─── Leaflet Overrides ─── */
.leaflet-container {
    background: var(--bg-primary) !important;
}

/* ─── Loading Spinner ─── */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255,255,255,0.1);
    border-top-color: var(--accent-purple);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
    margin: 20px auto;
}

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

/* ─── Responsive ─── */
@media (max-width: 380px) {
    .total-time {
        font-size: 40px;
        padding: 12px 24px;
    }

    .btn {
        font-size: 14px;
        padding: 12px 20px;
        min-width: 90px;
    }
}

@media (min-width: 768px) {
    .total-time {
        font-size: 64px;
        padding: 20px 48px;
    }
}