/* ===== CSS Custom Properties ===== */
:root {
    --bg-primary: #080c14;
    --bg-secondary: #0f1520;
    --bg-tertiary: #161e2c;
    --bg-card: #111827;
    --bg-card-hover: #182236;
    --bg-input: #0f1520;
    --bg-code: #0d1117;

    --border-color: #1e293b;
    --border-light: #263348;
    --border-focus: #06b6d4;

    --text-primary: #f1f5f9;
    --text-secondary: #bcc6d6;
    --text-muted: #64748b;
    --text-inverse: #080c14;

    --accent-primary: #06b6d4;
    --accent-primary-dark: #0891b2;
    --accent-primary-glow: rgba(6, 182, 212, 0.25);
    --accent-secondary: #8b5cf6;
    --accent-amber: #f59e0b;
    --accent-green: #10b981;
    --accent-red: #ef4444;

    --gradient-hero: linear-gradient(135deg, #06b6d4 0%, #8b5cf6 50%, #f59e0b 100%);
    --gradient-card: linear-gradient(135deg, rgba(6, 182, 212, 0.08) 0%, rgba(139, 92, 246, 0.08) 100%);

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 30px rgba(6, 182, 212, 0.15);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 16px;
    min-height: 100vh;
}

img, svg {
    display: block;
    max-width: 100%;
}

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

a:hover {
    color: #22d3ee;
}

ul {
    list-style: none;
}

address {
    font-style: normal;
}

::selection {
    background-color: var(--accent-primary);
    color: var(--text-inverse);
}

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

/* ===== Header ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(8, 12, 20, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    transition: background-color var(--transition-base);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 20px;
    letter-spacing: -0.02em;
}

.logo:hover {
    color: var(--text-primary);
}

.logo-icon {
    flex-shrink: 0;
}

.logo-text {
    display: flex;
    align-items: baseline;
    gap: 2px;
}

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

.main-nav ul {
    display: flex;
    align-items: center;
    gap: 4px;
}

.main-nav a {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 14.5px;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.main-nav a:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    padding: 160px 0 100px;
    overflow: hidden;
    background-color: var(--bg-primary);
}

.hero-bg-pattern {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(6, 182, 212, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 50% 80%, rgba(245, 158, 11, 0.04) 0%, transparent 50%);
    pointer-events: none;
}

.hero-bg-pattern::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(30, 41, 59, 0.3) 1px, transparent 1px),
        linear-gradient(90deg, rgba(30, 41, 59, 0.3) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(circle at 50% 50%, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(circle at 50% 50%, black 30%, transparent 70%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 999px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    font-size: 13.5px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 28px;
}

.badge-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background-color: var(--accent-primary);
    box-shadow: 0 0 8px var(--accent-primary-glow);
}

.hero-title {
    font-size: 56px;
    font-weight: 900;
    line-height: 1.08;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

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

.hero-subtitle {
    font-size: 17.5px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 36px;
    max-width: 640px;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 56px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 28px;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 600;
    font-family: var(--font-sans);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    line-height: 1;
}

.btn-primary {
    background-color: var(--accent-primary);
    color: var(--text-inverse);
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.25);
}

.btn-primary:hover {
    background-color: #22d3ee;
    color: var(--text-inverse);
    box-shadow: 0 0 30px rgba(6, 182, 212, 0.4);
    transform: translateY(-1px);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-primary);
    border: 1.5px solid var(--border-light);
}

.btn-outline:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background-color: rgba(6, 182, 212, 0.06);
}

.btn-full {
    width: 100%;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 28px;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stat-number {
    font-family: var(--font-mono);
    font-size: 16px;
    font-weight: 600;
    color: var(--accent-primary);
    letter-spacing: -0.01em;
}

.stat-label {
    font-size: 13.5px;
    color: var(--text-muted);
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 36px;
    background-color: var(--border-color);
}

/* ===== Section Headers ===== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-flex;
    padding: 5px 14px;
    border-radius: 999px;
    background-color: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.2);
    color: var(--accent-primary);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 18px;
}

.section-title {
    font-size: 40px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.025em;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 16.5px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ===== Services ===== */
.services {
    padding: 100px 0;
    background-color: var(--bg-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.service-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.service-card:hover {
    border-color: var(--border-light);
    background-color: var(--bg-card-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.service-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background-color: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.15);
}

.service-card-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.service-card-desc {
    font-size: 14.5px;
    color: var(--text-secondary);
    line-height: 1.65;
}

.service-card-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding-left: 0;
}

.service-card-list li {
    font-size: 13.5px;
    color: var(--text-muted);
    padding-left: 16px;
    position: relative;
}

.service-card-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background-color: var(--accent-primary);
}

/* ===== Capabilities ===== */
.capabilities {
    padding: 100px 0;
    background-color: var(--bg-primary);
}

.capabilities-grid {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.capability-group-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 14px;
}

.capability-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.cap-tag {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    font-family: var(--font-mono);
    transition: all var(--transition-fast);
}

.cap-tag:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background-color: rgba(6, 182, 212, 0.06);
}

/* ===== Approach ===== */
.approach {
    padding: 100px 0;
    background-color: var(--bg-secondary);
}

.approach-steps {
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 780px;
    margin: 0 auto;
}

.approach-step {
    display: flex;
    gap: 28px;
    padding: 32px;
    border-radius: var(--radius-lg);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.approach-step:hover {
    border-color: var(--border-light);
    background-color: var(--bg-card-hover);
}

.step-number {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--gradient-card);
    border: 1px solid rgba(6, 182, 212, 0.15);
    font-family: var(--font-mono);
    font-size: 18px;
    font-weight: 700;
    color: var(--accent-primary);
}

.step-content h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.step-content p {
    font-size: 14.5px;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* ===== About ===== */
.about {
    padding: 100px 0;
    background-color: var(--bg-primary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 18px;
}

.about-text:last-child {
    margin-bottom: 0;
}

.about-content .section-title {
    text-align: left;
    margin-bottom: 24px;
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.highlight-card {
    padding: 24px 28px;
    border-radius: var(--radius-md);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    transition: border-color var(--transition-fast);
}

.highlight-card:hover {
    border-color: var(--border-light);
}

.highlight-number {
    font-family: var(--font-mono);
    font-size: 22px;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 4px;
}

.highlight-label {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 10px;
}

.highlight-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== Contact ===== */
.contact {
    padding: 100px 0;
    background-color: var(--bg-secondary);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info .section-title {
    text-align: left;
    margin-bottom: 20px;
}

.contact-desc {
    font-size: 15.5px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.contact-icon-wrapper {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background-color: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.15);
}

.contact-label {
    display: block;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.contact-link {
    display: block;
    font-size: 15px;
    color: var(--text-primary);
    font-weight: 500;
    line-height: 1.5;
    text-decoration: none;
}

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

/* ===== Contact Form ===== */
.contact-form-wrapper {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.01em;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 11px 14px;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--border-color);
    background-color: var(--bg-input);
    color: var(--text-primary);
    font-size: 14.5px;
    font-family: var(--font-sans);
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

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

.form-group select {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5l5 5 5-5' stroke='%2364748b' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 40px;
}

.form-group select option {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 8px;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== Footer ===== */
.site-footer {
    padding: 72px 0 32px;
    background-color: var(--bg-primary);
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 28px;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 18px;
    margin-bottom: 16px;
}

.footer-logo-text {
    display: flex;
    align-items: baseline;
    gap: 2px;
}

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

.footer-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

.footer-heading {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 18px;
}

.footer-nav,
.footer-contact-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-nav a,
.footer-contact-list a {
    font-size: 14px;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.footer-nav a:hover,
.footer-contact-list a:hover {
    color: var(--accent-primary);
}

.footer-contact-list address {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

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

.footer-copyright {
    font-size: 13.5px;
    color: var(--text-muted);
}

.footer-attribution {
    font-size: 13.5px;
    color: var(--text-muted);
}

.footer-attribution strong {
    color: var(--text-secondary);
    font-weight: 600;
}

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

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

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: 120px 0 60px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 15.5px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

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

    .stat-divider {
        display: none;
    }

    .section-title {
        font-size: 30px;
    }

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

    .main-nav {
        display: none;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .approach-step {
        flex-direction: column;
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 28px;
    }

    .section-title {
        font-size: 24px;
    }

    .container {
        padding: 0 16px;
    }

    .contact-form-wrapper {
        padding: 24px;
    }
}