/* ── Design Tokens ─────────────────────────────────────────────── */

:root {
    --color-primary: #1a56db;
    --color-primary-dark: #1544b0;
    --color-text: #1a1a2e;
    --color-text-light: #4a4a6a;
    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fb;
    --color-border: #e2e8f0;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --max-width: 1120px;
    --space-section: 5rem;
    --radius: 8px;
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-card-hover: 0 4px 12px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
    --transition: 0.2s ease;
}

/* ── Reset & Base ─────────────────────────────────────────────── */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
    color: var(--color-primary-dark);
}

ul {
    list-style: none;
}

.hidden {
    display: none !important;
}

/* ── Container ────────────────────────────────────────────────── */

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

/* ── Buttons ──────────────────────────────────────────────────── */

.btn {
    display: inline-block;
    font-family: var(--font-family);
    font-weight: 600;
    text-align: center;
    border: 2px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: #fff;
}

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

.btn-secondary:hover {
    background: var(--color-primary);
    color: #fff;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 0.75rem 1.75rem;
    font-size: 1rem;
}

.btn-full {
    width: 100%;
}

/* ── Navigation ───────────────────────────────────────────────── */

.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
    gap: 2rem;
}

.nav-logo {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-text);
    white-space: nowrap;
}

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

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--color-text-light);
    font-size: 0.9375rem;
    font-weight: 500;
}

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

.nav-cta {
    flex-shrink: 0;
}

/* ── Hero ─────────────────────────────────────────────────────── */

.hero {
    padding: 5rem 0 4rem;
    text-align: center;
}

.hero-inner {
    max-width: 720px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 2.75rem;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 1.25rem;
}

.hero-sub {
    font-size: 1.25rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.hero-ctas {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ── Section Headings ─────────────────────────────────────────── */

.section-heading {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 0.75rem;
}

.section-sub {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

/* ── Services ─────────────────────────────────────────────────── */

.services {
    padding: var(--space-section) 0;
    background: var(--color-bg-alt);
    text-align: center;
}

.cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 1rem;
}

.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    text-align: left;
    box-shadow: var(--shadow-card);
    transition: box-shadow var(--transition), transform var(--transition);
    display: flex;
    flex-direction: column;
}

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

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

.card-label {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.card-price {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
}

.card-price-unit {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-light);
}

.card-list {
    margin-bottom: 1.25rem;
    flex-grow: 1;
}

.card-list li {
    padding: 0.375rem 0;
    padding-left: 1.25rem;
    position: relative;
    font-size: 0.9375rem;
    color: var(--color-text);
}

.card-list li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 600;
}

.card-desc {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    margin-bottom: 1.25rem;
    line-height: 1.5;
}

.card-cta {
    font-weight: 600;
    font-size: 0.9375rem;
}

/* ── About ────────────────────────────────────────────────────── */

.about {
    padding: var(--space-section) 0;
}

.about-inner {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
    align-items: start;
}

.about-photo {
    border-radius: var(--radius);
    overflow: hidden;
}

.photo-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background: var(--color-bg-alt);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: var(--color-text-light);
    font-weight: 500;
}

.about-text .section-heading {
    margin-bottom: 1rem;
}

.about-text p {
    margin-bottom: 1rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

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

/* ── Contact ──────────────────────────────────────────────────── */

.contact {
    padding: var(--space-section) 0;
    background: var(--color-bg-alt);
}

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

.contact-text .section-heading {
    margin-bottom: 1rem;
}

.contact-text p {
    color: var(--color-text-light);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
}

.required {
    color: var(--color-primary);
}

.form-group input,
.form-group textarea {
    font-family: var(--font-family);
    font-size: 1rem;
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-bg);
    color: var(--color-text);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.12);
}

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

/* ── Newsletter Callout ───────────────────────────────────────── */

.newsletter {
    padding: 3.5rem 0;
    text-align: center;
    background: var(--color-text);
    color: #fff;
}

.newsletter h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.newsletter p {
    color: rgba(255, 255, 255, 0.75);
    font-size: 1.0625rem;
    margin-bottom: 1.5rem;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
}

.newsletter .btn-primary {
    background: #fff;
    color: var(--color-text);
    border-color: #fff;
}

.newsletter .btn-primary:hover {
    background: var(--color-bg-alt);
    border-color: var(--color-bg-alt);
}

/* ── Footer ───────────────────────────────────────────────────── */

.footer {
    padding: 3rem 0 2rem;
    border-top: 1px solid var(--color-border);
}

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

.footer-brand {
    font-weight: 700;
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.footer-tagline {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: 0.5rem;
}

.footer-copy {
    font-size: 0.8125rem;
    color: var(--color-text-light);
}

.footer-heading {
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text);
    margin-bottom: 0.75rem;
}

.footer-col ul li {
    margin-bottom: 0.375rem;
}

.footer-col ul li a {
    font-size: 0.9375rem;
    color: var(--color-text-light);
}

.footer-col ul li a:hover {
    color: var(--color-primary);
}

/* ── Responsive: Tablet (768px) ───────────────────────────────── */

@media (max-width: 768px) {
    :root {
        --space-section: 3.5rem;
    }

    .nav-links {
        display: none;
    }

    .hero {
        padding: 3.5rem 0 3rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-sub {
        font-size: 1.0625rem;
    }

    .cards {
        grid-template-columns: 1fr;
        max-width: 480px;
        margin-left: auto;
        margin-right: auto;
    }

    .about-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-photo {
        max-width: 240px;
        margin: 0 auto;
    }

    .about-text .section-heading {
        text-align: center;
    }

    .contact-inner {
        grid-template-columns: 1fr;
    }

    .contact-text {
        text-align: center;
    }

    .footer-inner {
        grid-template-columns: 1fr 1fr;
    }

    .footer-col:first-child {
        grid-column: 1 / -1;
    }
}

/* ── Responsive: Mobile (480px) ───────────────────────────────── */

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.625rem;
    }

    .hero-sub {
        font-size: 1rem;
    }

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

    .section-heading {
        font-size: 1.625rem;
    }

    .card {
        padding: 1.5rem 1.25rem;
    }

    .card-price {
        font-size: 1.5rem;
    }

    .footer-inner {
        grid-template-columns: 1fr;
    }

    .footer-col:first-child {
        grid-column: auto;
    }

    .newsletter h2 {
        font-size: 1.375rem;
    }
}