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

:root {
    --bg-dark: #0a0a0f;
    --bg-darker: #050508;
    --card-bg: rgba(20, 20, 30, 0.7);
    --card-border: rgba(255, 255, 255, 0.08);
    --text-primary: #ffffff;
    --text-secondary: #a0a0b8;
    --text-muted: #6b6b80;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-success: #10b981;
    --accent-danger: #ef4444;
    --accent-warning: #f59e0b;
    --gradient-1: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-2: linear-gradient(135deg, #ec4899 0%, #8b5cf6 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-darker);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

.gradient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: var(--bg-darker);
}

.gradient-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%);
    animation: gradientMove 20s ease-in-out infinite;
}

@keyframes gradientMove {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-10%, -10%) scale(1.1); }
}

.bookmark-banner {
    background: var(--gradient-1);
    padding: 1.25rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    animation: slideDown 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.bookmark-banner.hidden {
    display: none;
}

.bookmark-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.bookmark-icon-wrapper {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.75rem;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bookmark-icon {
    width: 20px;
    height: 20px;
    stroke-width: 2.5;
}

.bookmark-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.bookmark-text strong {
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.bookmark-text span {
    font-size: 0.825rem;
    opacity: 0.9;
    font-weight: 400;
}

.dismiss-btn {
    background: rgba(255, 255, 255, 0.15);
    border: none;
    color: white;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.dismiss-btn svg {
    width: 18px;
    height: 18px;
    stroke-width: 2.5;
}

.dismiss-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

.header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.header-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-success);
    margin-bottom: 1.5rem;
    animation: fadeInScale 0.6s ease-out;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-success);
    border-radius: 50%;
    position: relative;
    animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.main-title {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1rem;
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

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

.gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.last-updated {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    padding: 0.75rem 1.25rem;
    border-radius: 12px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    box-shadow: var(--shadow-sm);
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

.last-updated svg {
    width: 16px;
    height: 16px;
    color: var(--accent-primary);
}

.last-updated strong {
    color: var(--text-primary);
    font-weight: 600;
}

.tabs-container {
    margin-bottom: 2.5rem;
}

.tabs {
    display: flex;
    gap: 1rem;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    padding: 0.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
}

.tab-btn {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 1rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 12px;
    position: relative;
    font-family: 'Inter', sans-serif;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    color: var(--text-primary);
    background: var(--gradient-1);
    box-shadow: var(--shadow-glow);
}

.tab-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.tab-icon svg {
    width: 20px;
    height: 20px;
    stroke-width: 2.5;
}

.sites-container {
    display: grid;
    gap: 1.25rem;
    margin-bottom: 3rem;
}

.loading {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    margin: 0 auto 1.5rem;
    border: 3px solid rgba(99, 102, 241, 0.2);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading p {
    font-size: 1rem;
    font-weight: 500;
}

.site-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    animation: fadeInSlide 0.5s ease-out;
}

@keyframes fadeInSlide {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.site-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.site-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transform: translateY(-4px);
}

.site-card:hover::before {
    opacity: 1;
}

.site-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.site-url {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.site-url a {
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.site-url a:hover {
    color: var(--accent-primary);
}

.site-url a::after {
    content: '→';
    font-size: 1.25rem;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
}

.site-url a:hover::after {
    opacity: 1;
    transform: translateX(0);
}

.site-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.status {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    transition: all 0.3s ease;
}

.status.online {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: var(--accent-success);
}

.status.offline {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--accent-danger);
}

.status.checking {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
    color: var(--accent-warning);
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    position: relative;
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.3);
        opacity: 0.7;
    }
}

.status.online .status-indicator {
    background: var(--accent-success);
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.5);
}

.status.offline .status-indicator {
    background: var(--accent-danger);
    box-shadow: 0 0 12px rgba(239, 68, 68, 0.5);
    animation: none;
}

.status.checking .status-indicator {
    background: var(--accent-warning);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.footer {
    text-align: center;
    padding: 2.5rem 0;
    margin-top: 3rem;
    border-top: 1px solid var(--card-border);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-content svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    opacity: 0.6;
}

@media (max-width: 768px) {
    .container {
        padding: 2rem 1rem;
    }

    .main-title {
        font-size: 2.5rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .tabs {
        flex-direction: column;
        gap: 0.5rem;
    }

    .tab-btn {
        padding: 1rem;
    }

    .site-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
        padding: 1.5rem;
    }

    .site-url {
        font-size: 1.25rem;
    }

    .status {
        width: 100%;
        justify-content: center;
    }

    .bookmark-content {
        gap: 1rem;
    }

    .bookmark-text {
        font-size: 0.875rem;
    }

    .bookmark-text span {
        display: none;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 2rem;
    }

    .tab-icon {
        display: none;
    }

    .site-card {
        padding: 1.25rem;
    }

    .site-url {
        font-size: 1.125rem;
    }

    .last-updated {
        font-size: 0.75rem;
        padding: 0.625rem 1rem;
    }
}