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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #000;
    color: #fff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 20px;
}

.page-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

/* Header and Navigation */
.header {
    text-align: center;
    margin-bottom: 30px;
}

.title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .2em;
    font-size: 2rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 20px;
}

.tab-nav {
    display: flex;
    background: #2c2c2e;
    border-radius: 12px;
    padding: 4px;
    gap: 2px;
}

.tab {
    flex: 1;
    padding: 12px 16px;
    text-decoration: none;
    color: #8e8e93;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s ease;
    text-align: center;
    font-size: 15px;
}

.tab:hover {
    color: #fff;
}

.tab.active {
    background: #007aff;
    color: #fff;
}

.main-content {
    min-height: 600px;
}

.stopwatch {
    background: #1c1c1e;
    border-radius: 20px;
    padding: 40px 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    min-height: 600px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.display {
    text-align: center;
    margin-bottom: 60px;
}

#time {
    font-size: 4rem;
    font-weight: 200;
    font-variant-numeric: tabular-nums;
    letter-spacing: -2px;
    color: #fff;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

.controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    gap: 20px;
}

.lap-btn, .start-stop-btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 2px solid;
    font-size: 18px;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.2s ease;
    background: transparent;
    outline: none;
}

.lap-btn {
    border-color: #48484a;
    color: #8e8e93;
}

.lap-btn:enabled {
    border-color: #fff;
    color: #fff;
}

.lap-btn:enabled:hover {
    background: rgba(255, 255, 255, 0.1);
}

.lap-btn:enabled:active {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(0.95);
}

.lap-btn:disabled {
    cursor: not-allowed;
}

.start-stop-btn {
    border-color: #30d158;
    color: #30d158;
}

.start-stop-btn.stop {
    border-color: #ff453a;
    color: #ff453a;
}

.start-stop-btn:hover {
    background: rgba(48, 209, 88, 0.1);
}

.start-stop-btn.stop:hover {
    background: rgba(255, 69, 58, 0.1);
}

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

.start-stop-btn.stop:active {
    background: rgba(255, 69, 58, 0.2);
}

.laps-container {
    max-height: 300px;
    overflow-y: auto;
}

.laps-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.laps-header.hidden {
    display: none;
}

.laps-title {
    font-size: 16px;
    font-weight: 600;
    color: #8e8e93;
}

.clear-btn {
    background: transparent;
    border: 1px solid #48484a;
    color: #fff;
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    outline: none;
}

.clear-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

.clear-btn:active {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(0.95);
}

.laps-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.lap-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: #2c2c2e;
    border-radius: 12px;
    animation: slideIn 0.3s ease;
}

.lap-number {
    font-size: 16px;
    color: #8e8e93;
    font-weight: 500;
}

.lap-time {
    font-size: 18px;
    font-weight: 400;
    font-variant-numeric: tabular-nums;
    color: #fff;
}

.lap-item.fastest {
    background: rgba(48, 209, 88, 0.15);
}

.lap-item.fastest .lap-time {
    color: #30d158;
}

.lap-item.slowest {
    background: rgba(255, 69, 58, 0.15);
}

.lap-item.slowest .lap-time {
    color: #ff453a;
}

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

/* Custom scrollbar */
.laps-container::-webkit-scrollbar {
    width: 4px;
}

.laps-container::-webkit-scrollbar-track {
    background: transparent;
}

.laps-container::-webkit-scrollbar-thumb {
    background: #48484a;
    border-radius: 2px;
}

/* Responsive design */
@media (max-width: 480px) {
    #time {
        font-size: 3rem;
    }
    
    .lap-btn, .start-stop-btn {
        width: 70px;
        height: 70px;
        font-size: 16px;
    }
    
    .stopwatch {
        padding: 30px 15px;
        min-height: 540px;
    }
}

/* Footer Styles */
.footer {
    background: #000;
    padding: 20px 0;
    border-top: 1px solid #2c2c2e;
    margin-top: 40px;
}

.footer-content {
    text-align: center;
    max-width: 400px;
    margin: 0 auto;
}

.footer-content p {
    color: #8e8e93;
    font-size: 14px;
    margin-bottom: 10px;
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.footer-nav a {
    color: #8e8e93;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s ease;
}

.footer-nav a:hover {
    color: #fff;
}

/* Content Page Styles (for legal pages like ToS, Privacy Policy) */
.page-container {
    background: #000;
    color: #fff;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    min-height: 100vh;
    padding: 20px;
    line-height: 1.6;
}

.page-container .container {
    max-width: 800px;
    margin: 0 auto;
}

.page-container header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 1px solid #2c2c2e;
}

.page-container header h1 {
    font-size: 2.5rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 10px;
}

.page-container .subtitle {
    color: #8e8e93;
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.page-container .last-updated {
    color: #8e8e93;
    font-size: 0.9rem;
    font-style: italic;
}

.content-section {
    margin-bottom: 30px;
    padding: 20px;
    background: #1c1c1e;
    border-radius: 12px;
    border: 1px solid #2c2c2e;
}

.content-section h2 {
    color: #007aff;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    border-bottom: 1px solid #2c2c2e;
    padding-bottom: 10px;
}

.content-section h3 {
    color: #fff;
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: 10px;
    margin-top: 20px;
}

.content-section h4 {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 8px;
    margin-top: 15px;
}

.content-section p {
    color: #fff;
    margin-bottom: 15px;
}

.content-section ul, .content-section ol {
    color: #fff;
    margin-bottom: 15px;
    padding-left: 20px;
}

.content-section li {
    margin-bottom: 8px;
}

.content-section a {
    color: #007aff;
    text-decoration: none;
    transition: color 0.2s ease;
}

.content-section a:hover {
    color: #66b3ff;
    text-decoration: underline;
}

.content-section strong {
    color: #fff;
    font-weight: 600;
}

.back-link {
    display: inline-block;
    margin-top: 30px;
    padding: 12px 20px;
    background: #2c2c2e;
    color: #007aff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.back-link:hover {
    background: #3a3a3c;
    color: #66b3ff;
}

/* Secondary Navigation for additional pages */
.secondary-nav {
    margin-top: 30px;
    text-align: center;
}

.secondary-nav-bar {
    display: inline-flex;
    background: #2c2c2e;
    border-radius: 12px;
    padding: 4px;
    gap: 2px;
}

.secondary-nav-link {
    padding: 12px 24px;
    text-decoration: none;
    color: #8e8e93;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-size: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.secondary-nav-link:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.secondary-nav-link.active {
    background: #007aff;
    color: #fff;
}

/* Icon styling for secondary nav */
.nav-icon {
    width: 16px;
    height: 16px;
    opacity: 0.8;
}

.secondary-nav-link:hover .nav-icon {
    opacity: 1;
}

/* Responsive Layout */
@media screen and (min-width: 1200px) {
    .page-wrapper {
        flex: 1;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .container {
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }
}

/* Responsive adjustments for secondary navigation */
@media (max-width: 768px) {
    .secondary-nav {
        margin-top: 20px;
    }
    
    .secondary-nav-link {
        padding: 10px 20px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .secondary-nav {
        margin-top: 15px;
    }
    
    .secondary-nav-link {
        padding: 8px 16px;
        font-size: 13px;
        gap: 6px;
    }
}

/* Privacy table container */
.privacy-table-container {
    background: #2c2c2e;
    border-radius: 8px;
    padding: 20px;
    margin: 20px 0;
    overflow-x: auto;
}

/* Content page footer adjustments */
.page-container .footer {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid #2c2c2e;
}

/* Instructions Section */
.instructions-section {
    margin-top: 30px;
    padding: 20px;
    background: #1c1c1e;
    border-radius: 12px;
    border: 1px solid #2c2c2e;
}

.instructions-header {
    text-align: center;
    margin-bottom: 20px;
}

.instructions-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 8px;
}

.instructions-subtitle {
    font-size: 0.9rem;
    color: #8e8e93;
}

.instructions-content {
    color: #fff;
    line-height: 1.6;
}

.instructions-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.instructions-list li {
    padding: 8px 0;
    border-bottom: 1px solid #2c2c2e;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

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

.step-number {
    background: #007aff;
    color: #fff;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
    flex-shrink: 0;
    margin-top: 2px;
}

.step-text {
    flex: 1;
}

.step-action {
    font-weight: 500;
    color: #007aff;
}

.step-description {
    color: #8e8e93;
    font-size: 0.9rem;
    margin-top: 4px;
}

/* Tips section */
.instructions-tips {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid #2c2c2e;
}

.tips-title {
    font-size: 1rem;
    font-weight: 600;
    color: #30d158;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tips-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tips-list li {
    padding: 6px 0;
    color: #8e8e93;
    font-size: 0.9rem;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.tip-icon {
    color: #30d158;
    font-weight: bold;
    margin-top: 2px;
}

/* Responsive adjustments for instructions */
@media (max-width: 768px) {
    .instructions-section {
        margin-top: 20px;
        padding: 15px;
    }
    
    .instructions-title {
        font-size: 1.1rem;
    }
    
    .instructions-subtitle {
        font-size: 0.85rem;
    }
    
    .step-text {
        font-size: 0.9rem;
    }
    
    .step-description {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .instructions-section {
        margin-top: 15px;
        padding: 12px;
    }
    
    .instructions-title {
        font-size: 1rem;
    }
    
    .step-number {
        width: 20px;
        height: 20px;
        font-size: 0.7rem;
    }
    
    .step-text {
        font-size: 0.85rem;
    }
    
    .step-description {
        font-size: 0.75rem;
    }
    
    .tips-title {
        font-size: 0.9rem;
    }
    
    .tips-list li {
        font-size: 0.8rem;
    }
}