/*
Theme Name: ServerGuardAI
Theme URI: https://serverguardai.com
Author: ServerGuardAI
Author URI: https://serverguardai.com
Description: Custom dark-themed marketing site for ServerGuardAI — AI-powered server monitoring for macOS and iOS.
Version: 1.0.0
License: Proprietary
Text Domain: serverguardai
*/

/* ========== RESET & BASE ========== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-card: rgba(22, 27, 34, 0.7);
    --bg-glass: rgba(22, 27, 34, 0.5);
    --accent: #00c8ff;
    --accent-glow: rgba(0, 200, 255, 0.15);
    --accent-hover: #00a8d6;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --border: rgba(48, 54, 61, 0.6);
    --radius: 12px;
    --radius-lg: 20px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --max-width: 1200px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ========== TYPOGRAPHY ========== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }

.section-title {
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 640px;
    margin: 0 auto 48px;
}

/* ========== NAVIGATION ========== */
.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 17, 23, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-brand img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition);
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ========== BUTTONS ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--accent);
    color: #000;
    box-shadow: 0 0 24px var(--accent-glow);
}

.btn-primary:hover {
    background: var(--accent-hover);
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 4px 32px var(--accent-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.btn-small {
    padding: 8px 20px;
    font-size: 0.85rem;
}

/* ========== HERO ========== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0, 200, 255, 0.08) 0%, transparent 60%),
        linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    z-index: 0;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 200, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 200, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridFloat 20s linear infinite;
    z-index: 0;
}

@keyframes gridFloat {
    0% { transform: translateY(0); }
    100% { transform: translateY(60px); }
}

.hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-content {
    max-width: 560px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 20px;
    background: var(--accent-glow);
    border: 1px solid rgba(0, 200, 255, 0.2);
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 24px;
    letter-spacing: 0.02em;
}

.hero h1 {
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--accent) 0%, #7c3aed 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    line-height: 1.7;
}

.hero-ctas {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    max-width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5), 0 0 60px var(--accent-glow);
}

/* ========== SECTIONS ========== */
.section {
    padding: 100px 0;
}

.section-alt {
    background: var(--bg-secondary);
}

/* ========== FEATURES ========== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 24px;
    transition: all var(--transition);
}

.feature-card:hover {
    border-color: rgba(0, 200, 255, 0.3);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: var(--accent-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ========== SCREENSHOTS ========== */
.screenshots-wrapper {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding: 8px 0 24px;
    -webkit-overflow-scrolling: touch;
}

.screenshots-wrapper::-webkit-scrollbar {
    height: 6px;
}

.screenshots-wrapper::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 3px;
}

.screenshots-wrapper::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 3px;
}

.screenshot-item {
    flex: 0 0 auto;
    width: min(480px, 85vw);
    scroll-snap-align: start;
}

.screenshot-item img {
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    transition: transform var(--transition);
}

.screenshot-item:hover img {
    transform: scale(1.02);
}

.screenshot-item figcaption {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 12px;
    font-weight: 500;
}

/* ========== HOW IT WORKS ========== */
.steps-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    position: relative;
}

.steps-row::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 15%;
    right: 15%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--border), var(--accent));
    opacity: 0.3;
}

.step-card {
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-num {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--accent-glow);
    border: 2px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
    margin: 0 auto 20px;
}

.step-card h3 {
    margin-bottom: 10px;
}

.step-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ========== PRICING ========== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    transition: all var(--transition);
}

.pricing-card.featured {
    border-color: var(--accent);
    box-shadow: 0 0 40px var(--accent-glow);
}

.pricing-card.enterprise {
    border-color: #a064ff;
    box-shadow: 0 0 40px rgba(160, 100, 255, 0.15);
}

.pricing-label.enterprise {
    color: #a064ff;
    background: rgba(160, 100, 255, 0.15);
}

.pricing-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    background: var(--accent-glow);
    padding: 4px 12px;
    border-radius: 6px;
    margin-bottom: 12px;
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.pricing-price {
    font-size: 2.5rem;
    font-weight: 800;
    margin: 16px 0;
}

.pricing-price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-secondary);
}

.pricing-price sup {
    font-size: 0.45em;
    vertical-align: super;
    font-weight: 700;
    line-height: 1;
}

.pricing-features {
    list-style: none;
    text-align: left;
    margin: 24px 0 32px;
}

.pricing-features li {
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.pricing-features li::before {
    content: '\2713';
    color: var(--accent);
    font-weight: 700;
}

.pricing-features li.disabled {
    color: var(--text-muted);
}

.pricing-features li.disabled::before {
    content: '\2717';
    color: var(--text-muted);
}

/* ========== CTA SECTION ========== */
.cta-section {
    text-align: center;
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 50% at 50% 100%, var(--accent-glow) 0%, transparent 70%);
}

.cta-section .container {
    position: relative;
    z-index: 1;
}

.cta-section h2 {
    margin-bottom: 16px;
}

.cta-section p {
    color: var(--text-secondary);
    margin-bottom: 32px;
    font-size: 1.1rem;
}

/* ========== FOOTER ========== */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 48px 0 32px;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-brand img {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.footer-brand span {
    font-weight: 700;
    font-size: 1rem;
}

.footer-links {
    display: flex;
    gap: 24px;
    list-style: none;
}

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

.footer-links a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    text-align: center;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ========== ENTRANCE ANIMATIONS ========== */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* ========== POLICY / HOW-IT-WORKS PAGES ========== */
.page-header {
    padding: 120px 0 60px;
    text-align: center;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.page-content {
    padding: 60px 0 100px;
}

.page-content .container {
    max-width: 800px;
}

.page-content h2 {
    font-size: 1.5rem;
    margin: 40px 0 16px;
    color: var(--accent);
}

.page-content h3 {
    font-size: 1.2rem;
    margin: 28px 0 12px;
}

.page-content p,
.page-content li {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

.page-content ul,
.page-content ol {
    padding-left: 24px;
    margin-bottom: 16px;
}

.page-content strong {
    color: var(--text-primary);
}

/* How-It-Works detail sections */
.hiw-section {
    padding: 80px 0;
}

.hiw-section:nth-child(even) {
    background: var(--bg-secondary);
}

.hiw-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.hiw-grid.reverse {
    direction: rtl;
}

.hiw-grid.reverse > * {
    direction: ltr;
}

.hiw-text h2 {
    color: var(--text-primary);
    font-size: 1.8rem;
    margin-bottom: 16px;
}

.hiw-text p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 12px;
}

.hiw-text ul {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.hiw-text ul li {
    padding: 8px 0;
    padding-left: 28px;
    position: relative;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.hiw-text ul li::before {
    content: '\2713';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
}

.hiw-image img {
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: 0 16px 60px rgba(0, 0, 0, 0.4);
}

.hiw-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent);
    color: #000;
    font-weight: 800;
    font-size: 0.95rem;
    margin-bottom: 12px;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-ctas {
        justify-content: center;
    }

    .hiw-grid,
    .hiw-grid.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
        text-align: center;
    }

    .hiw-text ul {
        display: inline-block;
        text-align: left;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(13, 17, 23, 0.95);
        backdrop-filter: blur(16px);
        flex-direction: column;
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--border);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .steps-row {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .steps-row::before {
        display: none;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .hiw-section .features-grid {
        grid-template-columns: 1fr !important;
    }

    .section .features-grid[style*="repeat(3"] {
        grid-template-columns: 1fr !important;
    }

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

    .section {
        padding: 64px 0;
    }

    .faq-grid {
        grid-template-columns: 1fr;
    }

    [style*="grid-template-columns: 1fr 1fr"] {
        grid-template-columns: 1fr !important;
    }
}

/* ========== FAQ ========== */
.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    max-width: 960px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color var(--transition);
}

.faq-item.open {
    border-color: rgba(0, 200, 255, 0.3);
}

.faq-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 20px 24px;
    background: none;
    border: none;
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    line-height: 1.4;
}

.faq-chevron {
    flex-shrink: 0;
    color: var(--text-muted);
    transition: transform var(--transition), color var(--transition);
}

.faq-item.open .faq-chevron {
    transform: rotate(180deg);
    color: var(--accent);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-item.open .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 24px 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    margin: 0;
}

/* ========== FOOTER TAGLINE ========== */
.footer-tagline {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 20px;
}