/* ================================
   SYBTEK — AI-Powered IT Services
   Dark Theme / Modern / 2026
   ================================ */

:root {
    --bg: #0a0a0f;
    --bg-card: #12121a;
    --bg-card-hover: #1a1a25;
    --bg-surface: #16161f;
    --border: rgba(255,255,255,0.06);
    --border-hover: rgba(255,255,255,0.12);
    --text: #e4e4e7;
    --text-secondary: #a1a1aa;
    --text-muted: #82828c;
    --accent: #6366f1;
    --accent-light: #818cf8;
    --accent-glow: rgba(99,102,241,0.15);
    --accent-glow-strong: rgba(99,102,241,0.3);
    --green: #22c55e;
    --green-dim: rgba(34,197,94,0.15);
    --blue: #3b82f6;
    --red: #ef4444;
    --red-dim: rgba(239,68,68,0.12);
    --gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a78bfa 100%);
    --gradient-text: linear-gradient(135deg, #818cf8 0%, #c084fc 100%);
    --shadow: 0 4px 24px rgba(0,0,0,0.4);
    --shadow-glow: 0 0 30px rgba(99,102,241,0.1);
    --radius: 8px;
    --radius-lg: 16px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Courier New', monospace;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

@media (prefers-reduced-motion: no-preference) {
    html { scroll-behavior: smooth; }
}
html { scroll-padding-top: 72px; }

body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

a {
    color: var(--accent-light);
    text-decoration: none;
    transition: color 0.3s ease;
}
a:hover { color: #a5b4fc; }

/* Skip link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    z-index: 9999;
    background: var(--accent);
    color: #fff;
    padding: 8px 16px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.9rem;
}
.skip-link:focus { top: 8px; }

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    border: 0;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    color: #fff;
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.75rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.35rem); }

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

/* Section Tag */
.section-tag {
    display: inline-block;
    background: var(--accent-glow);
    color: var(--accent-light);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 20px;
    border: 1px solid rgba(99,102,241,0.2);
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 48px;
}

.section-sub {
    color: var(--text-secondary);
    margin-top: 16px;
    font-size: 1.1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font);
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
    text-decoration: none;
}

.btn:focus-visible {
    outline: 2px solid var(--accent-light);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--gradient);
    color: #fff;
    box-shadow: 0 4px 16px rgba(99,102,241,0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99,102,241,0.4);
    color: #fff;
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

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

.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent-light);
    background: var(--accent-glow);
}

.btn-full { width: 100%; }

/* Focus visible for links */
a:focus-visible {
    outline: 2px solid var(--accent-light);
    outline-offset: 2px;
    border-radius: 2px;
}

/* ================================
   NAVIGATION
   ================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.navbar.scrolled {
    background: rgba(10,10,15,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo { display: flex; align-items: center; }
.logo-img { height: 28px; width: auto; filter: brightness(0) invert(1); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

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

.nav-links li:last-child .nav-cta {
    background: var(--accent-glow);
    color: var(--accent-light);
    padding: 8px 20px;
    border-radius: var(--radius);
    border: 1px solid rgba(99,102,241,0.3);
}

.nav-links li:last-child .nav-cta:hover {
    background: var(--accent-glow-strong);
    border-color: var(--accent);
}

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    position: relative;
    width: 38px;
    height: 38px;
    justify-content: center;
    align-items: center;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
    transition: transform 0.3s ease, opacity 0.3s ease;
    transform-origin: center;
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(10,10,15,0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--border);
        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.3s ease, opacity 0.3s ease;
    }
    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
}

/* ================================
   HERO
   ================================ */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    padding: 100px 0 64px;
    overflow: hidden;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(99,102,241,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99,102,241,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 70%);
}

.hero-glow {
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 600px;
    background: radial-gradient(ellipse, rgba(99,102,241,0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    max-width: 750px;
    animation: heroFadeIn 0.8s ease-out;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-glow);
    border: 1px solid rgba(99,102,241,0.2);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent-light);
    margin-bottom: 28px;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--green);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(34,197,94,0.4); }
    50% { opacity: 0.8; box-shadow: 0 0 0 6px rgba(34,197,94,0); }
}

.hero h1 { margin-bottom: 24px; }

.hero-sub {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 580px;
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.hero-metrics {
    display: flex;
    align-items: center;
    gap: 32px;
}

.metric-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
}

.metric-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.metric-divider {
    width: 1px;
    height: 40px;
    background: var(--border-hover);
}

@media (max-width: 768px) {
    .hero { padding: 90px 0 48px; min-height: auto; }
    .hero-metrics { flex-wrap: wrap; gap: 24px; }
    .metric-divider { display: none; }
}

/* ================================
   SERVICES
   ================================ */
.services {
    padding: 80px 0;
    position: relative;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

@media (max-width: 900px) {
    .services-grid { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto; }
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease, background 0.3s ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.service-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

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

.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-glow);
    border-radius: 12px;
    margin-bottom: 24px;
    color: var(--accent-light);
}

.card-icon svg { width: 24px; height: 24px; }

.service-card h3 { margin-bottom: 12px; }

.service-card > p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
    line-height: 1.7;
}

.card-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.card-features li {
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding-left: 20px;
    position: relative;
}

.card-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}

/* ================================
   THE SYBTEK EDGE
   ================================ */
.edge {
    padding: 80px 0;
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.edge-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}

@media (max-width: 900px) {
    .edge-layout { grid-template-columns: 1fr; gap: 48px; }
}

.edge-text h2 { margin-bottom: 24px; }

.edge-lead {
    color: var(--text);
    margin-bottom: 16px;
    line-height: 1.7;
    font-size: 1.05rem;
}

.edge-text > p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.7;
}

.edge-features {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.edge-feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.edge-feature-icon {
    width: 36px;
    height: 36px;
    min-width: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-glow);
    border-radius: 8px;
    color: var(--accent-light);
}

.edge-feature-icon svg { width: 18px; height: 18px; }

.edge-feature strong {
    display: block;
    color: #fff;
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.edge-feature span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Terminal */
.terminal {
    background: #0d0d12;
    border: 1px solid var(--border-hover);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow), var(--shadow-glow);
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: rgba(255,255,255,0.02);
    border-bottom: 1px solid var(--border);
}

.terminal-dots { display: flex; gap: 8px; }

.terminal-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-dots span:nth-child(1) { background: #ef4444; }
.terminal-dots span:nth-child(2) { background: #eab308; }
.terminal-dots span:nth-child(3) { background: #22c55e; }

.terminal-title {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--mono);
}

.terminal-body {
    padding: 20px;
    font-family: var(--mono);
    font-size: 0.82rem;
    line-height: 1.8;
    overflow-x: auto;
}

.terminal-line { white-space: nowrap; }
.t-break { height: 12px; }
.t-prompt { color: var(--accent-light); }
.t-cmd { color: #e4e4e7; }
.t-success { color: var(--green); }
.t-info { color: var(--blue); }
.t-dim { color: var(--text-secondary); }

.typing .cursor { animation: blink 1s step-end infinite; }

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

/* ================================
   ABOUT
   ================================ */
.about { padding: 80px 0; }

.about-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 56px;
    align-items: center;
}

@media (max-width: 900px) {
    .about-layout { grid-template-columns: 1fr; gap: 48px; }
}

.about-image {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
}

.about-image img {
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    width: 100%;
    object-fit: cover;
    object-position: center top;
    aspect-ratio: 3/4;
}

.about-lead {
    font-size: 1.15rem;
    color: var(--text);
    margin-bottom: 16px;
    line-height: 1.7;
}

.about-text > p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.7;
}

.about-values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 32px;
}

@media (max-width: 600px) {
    .about-values { grid-template-columns: 1fr; }
}

.value {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.value strong {
    display: block;
    color: #fff;
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.value span {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* ================================
   CONTACT
   ================================ */
.contact {
    padding: 80px 0;
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 56px;
    align-items: start;
}

@media (max-width: 900px) {
    .contact-layout { grid-template-columns: 1fr; gap: 48px; }
}

.contact-info h2 { margin-bottom: 16px; }

.contact-info > p {
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.7;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 32px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
}

.contact-item svg {
    width: 20px;
    height: 20px;
    min-width: 20px;
    color: var(--accent-light);
}

.contact-item a { color: var(--text-secondary); }
.contact-item a:hover { color: var(--accent-light); }

.contact-promise {
    background: var(--accent-glow);
    border: 1px solid rgba(99,102,241,0.15);
    border-radius: var(--radius);
    padding: 24px;
}

.contact-promise strong {
    display: block;
    color: #fff;
    margin-bottom: 8px;
}

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

/* Contact Form */
.contact-form-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.contact-form h3 { margin-bottom: 28px; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 500px) {
    .form-row { grid-template-columns: 1fr; }
}

.form-group { margin-bottom: 20px; }

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 0.95rem;
    font-family: var(--font);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

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

.form-group input.error,
.form-group textarea.error {
    border-color: var(--red);
    box-shadow: 0 0 0 3px var(--red-dim);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2382828c' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.form-group select:invalid { color: var(--text-muted); }

.form-group select option {
    background: var(--bg-card);
    color: var(--text);
}

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

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* Form error */
.form-error {
    background: var(--red-dim);
    border: 1px solid rgba(239,68,68,0.3);
    color: #fca5a5;
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    margin-bottom: 20px;
    display: none;
}

.form-error.visible { display: block; }

.form-note {
    margin-top: 16px;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
}

/* Form success */
.form-success {
    text-align: center;
    padding: 40px 20px;
}

.success-check {
    width: 64px;
    height: 64px;
    background: var(--green-dim);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--green);
}

.success-check svg { width: 32px; height: 32px; }

.form-success p {
    color: var(--text-secondary);
    margin-top: 8px;
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 24px;
}

.footer-logo {
    height: 22px;
    filter: brightness(0) invert(1);
    opacity: 0.7;
    margin-bottom: 12px;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    max-width: 300px;
}

.footer-links {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

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

@media (max-width: 600px) {
    .footer-content { flex-direction: column; text-align: center; align-items: center; }
    .footer-brand p { max-width: none; }
    .footer-links { justify-content: center; }
}

/* ================================
   ANIMATIONS
   ================================ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.services-grid .service-card:nth-child(2) { transition-delay: 0.1s; }
.services-grid .service-card:nth-child(3) { transition-delay: 0.2s; }

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

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
    .hero-content { animation: none; }
    .badge-dot { animation: none; }
    .typing .cursor { animation: none; opacity: 1; }
}

/* Print */
@media print {
    .navbar, .hero-grid, .hero-glow, .terminal { display: none; }
    body { background: #fff; color: #000; }
    h1, h2, h3 { color: #000; }
    .gradient-text { -webkit-text-fill-color: #000; background: none; }
}