/* ============================================================
   SLOT-H - Single Logical Operating Tool for Hosting
   Main Styles
   ============================================================ */
:root {
    --color-bg: #0a0e17;
    --color-bg-secondary: #111827;
    --color-bg-card: #1a2332;
    --color-bg-hover: #243044;
    --color-text: #e8edf5;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    --color-accent: #60a5fa;
    --color-accent-hover: #3b82f6;
    --color-accent-dark: #1e40af;
    --color-accent-glow: rgba(96, 165, 250, 0.15);
    --color-disabled: #cbcbcb;
    --color-success: #34d399;
    --color-warning: #fbbf24;
    --color-danger: #f87171;
    --color-border: #2a3a52;
    --color-border-light: #3a4a62;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.4);
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --container-max: 1200px;
    --header-height: 64px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&display=swap');
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 14, 23, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
    display: flex;
    align-items: center;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    gap: 1.5rem;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--color-text);
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--color-accent);
}

.logo-text {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.logo-highlight {
    color: var(--color-accent);
}

.logo-tagline {
    display: none;
    font-size: 0.7rem;
    color: var(--color-text-muted);
    font-weight: 400;
    letter-spacing: 0.02em;
}

@media (min-width: 992px) {
    .logo-tagline {
        display: inline;
    }
}

.main-nav ul {
    display: flex;
    gap: 0.5rem;
    list-style: none;
}

.main-nav a {
    display: block;
    padding: 0.4rem 0.9rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius);
    transition: all var(--transition);
}

.main-nav a:hover {
    color: var(--color-text);
    background: var(--color-bg-hover);
}

.main-nav a.active {
    color: var(--color-accent);
    background: var(--color-accent-glow);
}

.header-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn .btn-icon {
    font-size: 1rem;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-bg);
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(96, 165, 250, 0.3);
}

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

.btn-disabled {
    color: #9b9b9b;
    border-color: #9b9b9b;
    background-color: #f9f9f9;
}

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

.btn-github {
    background: var(--color-bg-card);
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-github:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-light);
    transform: translateY(-1px);
}

.btn-full {
    width: 100%;
    justify-content: center;
    padding: 0.75rem;
}

main {
    flex: 1;
    padding: 2rem 0;
}

.hero {
    padding: 2rem 0;
}

.hero-content {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow);
}

.site-footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: 3rem 0 1.5rem;
    margin-top: 2rem;
}

.footer-inner {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: start;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-logo {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text);
}

.footer-tagline {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-column ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.footer-column a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition);
}

.footer-column a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    grid-column: 1 / -1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
    margin-top: 1.5rem;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.footer-badges {
    display: flex;
    gap: 0.5rem;
}

.footer-badges .badge {
    padding: 0.2rem 0.7rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
}

.popup-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
    padding: 1rem;
}

.popup-overlay.active {
    display: flex;
}

.popup {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    max-width: 440px;
    width: 100%;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    animation: popupSlide 0.3s ease;
    position: relative;
}

@keyframes popupSlide {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(12px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.popup-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.popup-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 0.5rem;
}

.popup h2 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.popup-subtitle {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.popup-close {
    position: absolute;
    top: 0.75rem;
    right: 1rem;
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.8rem;
    cursor: pointer;
    transition: color var(--transition);
    line-height: 1;
}

.popup-close:hover {
    color: var(--color-text);
}

.popup-footer {
    text-align: center;
    margin-top: 1.25rem;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.popup-footer a {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 500;
}

.popup-footer a:hover {
    text-decoration: underline;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 0.3rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"] {
    width: 100%;
    padding: 0.6rem 0.9rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
    font-size: 0.95rem;
    font-family: var(--font-sans);
    transition: all var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-group input::placeholder {
    color: var(--color-text-muted);
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    margin-top: 0.2rem;
}

.checkbox-group input[type="checkbox"] {
    width: 1.1rem;
    height: 1.1rem;
    margin-top: 0.2rem;
    accent-color: var(--color-accent);
    cursor: pointer;
    flex-shrink: 0;
}

.checkbox-group label {
    margin-bottom: 0;
    font-weight: 400;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    line-height: 1.4;
}

@media (max-width: 992px) {
    .footer-inner {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-links {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-wrap: wrap;
        gap: 0.75rem;
        padding: 0.5rem 0;
    }

    .site-header {
        height: auto;
        min-height: var(--header-height);
    }

    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.25rem;
    }

    .main-nav a {
        padding: 0.3rem 0.7rem;
        font-size: 0.85rem;
    }

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

    .btn {
        padding: 0.4rem 1rem;
        font-size: 0.85rem;
    }

    .logo-text {
        font-size: 1.1rem;
    }

    .hero-content {
        padding: 1.5rem;
    }

    .footer-links {
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
    }

    .popup {
        padding: 1.5rem;
        margin: 0.5rem;
    }
}

@media (max-width: 480px) {
    .main-nav ul {
        gap: 0.15rem;
    }

    .main-nav a {
        font-size: 0.8rem;
        padding: 0.25rem 0.5rem;
    }

    .footer-links {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .btn .btn-icon {
        display: none;
    }
}