/* CSS Variables - Light/Dark Theme */
:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #334155;
    --accent-primary: #3b82f6;
    --accent-secondary: #60a5fa;
    --accent-hover: #93c5fd;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f0f9ff;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --accent-primary: #3b82f6;
    --accent-secondary: #1e40af;
    --accent-hover: #1d4ed8;
    --success: #22c55e;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

html {
    scroll-behavior: smooth;
    height: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 1rem 0;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 256px;
    height: 64px;
}

.logo-light {
    display: none;
}

.logo-dark {
    display: block;
}

[data-theme="light"] .logo-light {
    display: block;
}

[data-theme="light"] .logo-dark {
    display: none;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    gap: 2rem;
    margin-left: -9rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--accent-primary);
}

.nav-link .badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    font-size: 0.55rem;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 6px;
    margin-left: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.theme-toggle:hover {
    background: var(--border-color);
}

.sun-icon {
    display: none;
}

.moon-icon {
    display: block;
}

[data-theme="dark"] .sun-icon {
    display: block;
}

[data-theme="dark"] .moon-icon {
    display: none;
}

/* Hero Section */
.hero {
    padding: 130px 0 40px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
}

/* Section Title */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

/* Servers Section */
.servers-section {
    padding: 40px 0;
    background-color: var(--bg-secondary);
    flex: 1;
}

.servers-table-container {
    overflow-x: auto;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    background: var(--bg-card);
}

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

.servers-table th,
.servers-table td {
    padding: 16px 20px;
    text-align: left;
    vertical-align: middle;
}

.servers-table th {
    background-color: var(--bg-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-color);
}

.servers-table td {
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.servers-table tbody tr:hover {
    background-color: var(--bg-secondary);
}

.servers-table tbody tr:last-child td {
    border-bottom: none;
}

.server-name-cell {
    display: flex;
    align-items: center;
    gap: 12px;
}

.server-icon-small {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.server-name-cell h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.server-map-cell {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.server-players-cell {
    font-weight: 600;
    color: var(--accent-primary);
}

.server-status-cell {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--success);
    animation: pulse 2s infinite;
    margin-top: 10px;
}

.status-text {
    color: var(--text-secondary);
    margin-top: 10px;
}

.connect-btn-table {
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.connect-btn-table:hover {
    background: linear-gradient(135deg, var(--accent-hover), var(--accent-primary));
    transform: translateY(-2px);
}

.connect-btn-table:active {
    transform: translateY(0);
}

.connect-btn-table svg {
    width: 16px;
    height: 16px;
}

/* Loading State */
.loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

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

.servers-table tbody td {
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-weight: 400;
}

.servers-table tbody tr:nth-of-type(odd) {
    background-color: rgba(0, 0, 0, 0.15);
}
.servers-table tbody tr:nth-of-type(even) {
    background-color: transparent;
}

.servers-table tbody tr:hover {
    background-color: var(--bg-secondary) !important;
}

/* Ranking Section */
.ranking-section {
    padding: 80px 0;
    background-color: var(--bg-primary);
}

.ranking-table-container {
    overflow-x: auto;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
}

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

.ranking-table a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.ranking-table th,
.ranking-table td {
    padding: 16px 20px;
    text-align: left;
}

.ranking-table thead th {
    background-color: var(--bg-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-color);
}

.ranking-table tbody td {
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-weight: 400;
}

.ranking-table tbody tr:nth-of-type(odd) {
    background-color: rgba(0, 0, 0, 0.15);
}

.ranking-table tbody tr:nth-of-type(even) {
    background-color: transparent;
}

.ranking-table tbody tr:hover {
    background-color: var(--bg-secondary) !important;
}

.rank {
    font-weight: 700;
    color: var(--accent-primary);
}

.rank-1 {
    color: #fbbf24;
}

.rank-2 {
    color: #94a3b8;
}

.rank-3 {
    color: #b45309;
}

.player-name {
    font-weight: 500;
}

.score {
    font-weight: 700;
    color: var(--accent-primary);
}

.accuracy {
    font-weight: 600;
}

.accuracy-high {
    color: var(--success);
}

.accuracy-medium {
    color: var(--accent-primary);
}

.accuracy-low {
    color: var(--text-muted);
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 20px 0;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-small {
    width: 128px;
    height: 32px;
}

.logo-small.logo-light {
    display: none;
}

.logo-small.logo-dark {
    display: block;
}

[data-theme="light"] .logo-small.logo-light {
    display: block;
}

[data-theme="light"] .logo-small.logo-dark {
    display: none;
}

.footer-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer-link:hover {
    color: var(--accent-primary);
}

/* Responsive */
@media (max-width: 1400px) {
    .server-card {
        flex: 0 0 calc(33.333% - 24px);
    }
}

@media (max-width: 1100px) {
    .server-card {
        flex: 0 0 calc(50% - 24px);
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .nav {
        display: none;
    }

    .server-card {
        flex: 0 0 100%;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .ranking-table th,
    .ranking-table td {
        padding: 12px;
    }
}

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

    .section-title {
        font-size: 1.75rem;
    }

    .server-stats {
        grid-template-columns: 1fr;
    }
}

/* User Navigation & Steam Login */
.user-nav {
    display: flex;
    align-items: center;
}

.btn-steam-login {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(135deg, #171a21 0%, #1b2838 100%);
    color: #c7d5e0;
    border: 1px solid #2a475e;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn-steam-login img {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.btn-steam-login:hover {
    background: linear-gradient(135deg, #1b2838 0%, #2a475e 100%);
    color: #ffffff;
    border-color: #66c0f4;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 192, 244, 0.3);
}

.btn-steam-login svg {
    flex-shrink: 0;
}

/* User Dropdown */
.user-dropdown {
    position: relative;
}

.user-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.user-dropdown-toggle:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-primary);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border-color);
}

.user-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-arrow {
    color: var(--text-secondary);
    transition: transform 0.2s ease;
}

.user-dropdown:hover .user-arrow {
    transform: rotate(180deg);
}

.user-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    z-index: 1001;
    overflow: hidden;
}

.user-dropdown:hover .user-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    color: var(--text-primary);
    text-decoration: none;
    transition: background-color 0.2s ease;
}

.dropdown-item:hover {
    background: var(--bg-secondary);
}

.dropdown-item svg {
    flex-shrink: 0;
    color: var(--text-secondary);
}

.dropdown-item:hover svg {
    color: var(--accent-primary);
}

/* Responsive header */
@media (max-width: 768px) {

    .hero {
        padding: 40px 0 40px;
    }

    .user-name {
        display: none;
    }

    .user-dropdown-toggle {
        padding: 6px;
    }

    .btn-steam-login span {
        display: none;
    }

    .btn-steam-login {
        padding: 10px;
    }
}

/* Login Error Message */
.login-error {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 6px;
    color: #fca5a5;
    font-size: 14px;
    margin-right: 16px;
}

.login-error button {
    background: transparent;
    border: none;
    color: #fca5a5;
    cursor: pointer;
    font-size: 18px;
    padding: 0;
    line-height: 1;
}

.login-error button:hover {
    color: #ffffff;
}

/* How It Works Link */
.nav-link-how-it-works {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(135deg, #3b82f6 0%, #3b82f6 100%);
    color: #ffffff;
    border: 1px solid #2b4675;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    margin-right: 16px;
}

.nav-link-how-it-works:hover {
    background: linear-gradient(135deg, #3b82f6 0%, #3b82f6 100%);
    color: #ffffff;
    border-color: #2b4675;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.nav-link-how-it-works svg {
    flex-shrink: 0;
}

/* Donate Button */
.btn-donate {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(135deg, #5c7c1e 0%, #7a9e2e 100%);
    color: #ffffff;
    border: 1px solid #8db636;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    margin-right: 16px;
}

.btn-donate:hover {
    background: linear-gradient(135deg, #7a9e2e 0%, #8db636 100%);
    color: #ffffff;
    border-color: #a8d956;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(141, 182, 54, 0.3);
}

.btn-donate svg {
    flex-shrink: 0;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px;
    cursor: pointer;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.mobile-menu-toggle:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-primary);
}

/* Mobile Menu Dropdown */
.mobile-menu-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 20px;
    flex-direction: column;
    gap: 12px;
    z-index: 999;
}

.mobile-menu-dropdown.active {
    display: flex;
}

.mobile-menu-dropdown .btn-steam-login,
.mobile-menu-dropdown .btn-donate {
    width: 100%;
    justify-content: center;
    margin-right: 0;
}

/* Responsive header */
@media (max-width: 768px) {
    .header {
        position: relative;
        padding: 0.75rem 0;
    }

    .header-content {
        position: relative;
    }

    .logo {
        width: 160px;
        height: 40px;
    }

    .mobile-menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .user-nav {
        display: none;
    }

    .user-nav.mobile-active {
        display: flex;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        border-bottom: 1px solid var(--border-color);
        padding: 16px 20px;
        flex-direction: column;
        gap: 12px;
        z-index: 999;
        box-shadow: var(--shadow);
    }

    .user-name {
        display: none;
    }

    .user-dropdown-toggle {
        padding: 6px;
    }

    .btn-steam-login {
        padding: 12px 20px;
        gap: 8px;
        width: 100%;
        justify-content: center;
    }

    .btn-steam-login img {
        width: 24px;
        height: 24px;
    }

    .btn-donate {
        padding: 12px 20px;
        margin-right: 0;
        width: 100%;
        justify-content: center;
    }

    .nav-link-how-it-works {
        padding: 12px 20px;
        margin-right: 0;
        width: 100%;
        justify-content: center;
    }

    .login-error {
        margin-right: 0;
        width: 100%;
    }
}