/* DataCity — Internet Service Provider */

:root {
    --color-black: #0A0A0A;
    --color-charcoal: #1F2937;
    --color-steel: #4B5563;
    --color-light-grey: #E5E7EB;
    --color-white: #FFFFFF;
    --color-blue: #0066CC;
    --color-accent: #008CFF;
    --color-bg: #F3F4F6;
    --color-surface: #FFFFFF;
    --color-text: #111827;
    --color-text-secondary: #4B5563;
    --color-text-muted: #6B7280;
    --color-border: #D1D5DB;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --radius: 6px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.08);
    --transition: 0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-white);
    line-height: 1.6;
    min-height: 100vh;
}

a { text-decoration: none; color: inherit; }

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
    background: var(--color-blue);
    color: var(--color-white);
}
.btn-primary:hover { background: #0052a3; box-shadow: var(--shadow-md); }

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255,255,255,0.4);
}
.btn-outline:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.7); }

.btn-block { width: 100%; }

/* Navigation */
.navbar {
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
}

.logo-icon { color: var(--color-blue); font-size: 1.4rem; }

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.75rem;
}

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

.nav-menu a:hover { color: var(--color-blue); }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: 0.3s;
}

/* Hero */
.hero {
    position: relative;
    background: var(--color-charcoal);
    color: var(--color-white);
    padding: 6rem 0 5rem;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(0,140,255,0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0,102,204,0.06) 0%, transparent 50%);
    pointer-events: none;
}

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

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 1.25rem;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: rgba(255,255,255,0.8);
    line-height: 1.6;
    margin-bottom: 2rem;
    max-width: 640px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Sections */
.section {
    padding: 4rem 0;
}

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

.section-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--color-text);
    text-align: center;
    margin-bottom: 2.5rem;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: -1.5rem auto 2rem;
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.service-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.75rem;
    transition: box-shadow var(--transition), transform var(--transition);
}

.service-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.service-icon {
    color: var(--color-blue);
    margin-bottom: 1rem;
}

.service-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.service-card p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
}

.service-card ul {
    list-style: none;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.service-card ul li {
    padding: 0.25rem 0;
    padding-left: 1.25rem;
    position: relative;
}

.service-card ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.7rem;
    width: 6px;
    height: 6px;
    background: var(--color-blue);
    border-radius: 50%;
}

/* Why */
.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    text-align: center;
}

.why-item h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.why-item p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* Coverage */
.coverage { background: var(--color-charcoal); color: var(--color-white); }
.coverage .section-title { color: var(--color-white); }
.coverage .section-subtitle { color: rgba(255,255,255,0.7); }

.coverage-areas {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

.coverage-badge {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    padding: 0.5rem 1rem;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 500;
}

.availability-checker {
    background: rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    padding: 2rem;
    max-width: 540px;
    margin: 0 auto;
    text-align: center;
}

.availability-checker h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.availability-form {
    display: flex;
    gap: 0.75rem;
}

.availability-form input {
    flex: 1;
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    font-family: inherit;
    font-size: 0.95rem;
}

.availability-result {
    margin-top: 1rem;
    font-size: 0.95rem;
    min-height: 1.5rem;
}

/* Industries */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
}

.industry-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 1rem;
    text-align: center;
    border-radius: var(--radius);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    transition: box-shadow var(--transition);
}

.industry-item:hover {
    box-shadow: var(--shadow-sm);
    color: var(--color-text);
}

/* Infrastructure */
.infra-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.infra-item {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 1.5rem;
    border-radius: var(--radius);
}

.infra-item h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

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

/* Testimonials */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.testimonial-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 1.75rem;
    border-radius: var(--radius);
}

.testimonial-card p {
    font-style: italic;
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.testimonial-card cite {
    font-style: normal;
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.9rem;
}

/* Plans */
.plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.plan-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: 1.75rem;
    border-radius: var(--radius);
    text-align: center;
    transition: box-shadow var(--transition), transform var(--transition);
}

.plan-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.plan-card.featured {
    border-color: var(--color-blue);
    box-shadow: 0 0 0 1px var(--color-blue);
}

.plan-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.plan-speed {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-blue);
    margin-bottom: 0.75rem;
}

.plan-card p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.25rem;
}

.plans-note {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* About */
.about-content {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
    font-size: 1.05rem;
    line-height: 1.7;
}

/* Contact */
.contact { background: var(--color-bg); }

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

.contact-info h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.contact-info p {
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
}

.contact-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.contact-buttons .btn-outline {
    color: var(--color-text);
    border-color: var(--color-border);
}

.contact-buttons .btn-outline:hover {
    background: var(--color-white);
    border-color: var(--color-steel);
}

.contact-form-wrapper {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
}

.contact-form .form-group {
    margin-bottom: 1rem;
}

.contact-form label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 0.35rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 0.65rem 0.875rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.95rem;
    background: var(--color-white);
    color: var(--color-text);
    transition: border-color var(--transition);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-blue);
}

.form-success {
    margin-top: 0.75rem;
    color: var(--color-blue);
    font-size: 0.9rem;
    font-weight: 500;
    min-height: 1.5rem;
}

/* Footer */
.footer {
    background: var(--color-charcoal);
    color: rgba(255,255,255,0.7);
    padding: 3rem 0 1.5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand .logo {
    color: var(--color-white);
    margin-bottom: 0.75rem;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.6;
    max-width: 320px;
}

.footer-links h4 {
    color: var(--color-white);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.4rem;
}

.footer-links a {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
    transition: color var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1.5rem;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.footer-bottom .copyright {
    color: rgba(255,255,255,0.4);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--color-white);
        border-bottom: 1px solid var(--color-border);
        flex-direction: column;
        padding: 1rem 1.5rem;
        gap: 1rem;
    }

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

    .nav-toggle { display: flex; }

    .hero { padding: 4rem 0 3rem; }
    .hero h1 { font-size: 2rem; }
    .hero-subtitle { font-size: 1rem; }

    .contact-grid { grid-template-columns: 1fr; gap: 2rem; }
    .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
    .availability-form { flex-direction: column; }
}