/* ═══════════════════════════════════════
   KITCA Brand Website — Design System
   ═══════════════════════════════════════ */

:root {
    --navy: #183878;
    --navy-dark: #0f2450;
    --blue: #007ACC;
    --blue-light: #e8f4fd;
    --white: #ffffff;
    --off-white: #f5f7fa;
    --gray-100: #f0f2f5;
    --gray-200: #e2e6ed;
    --gray-400: #969ba5;
    --gray-600: #5a6070;
    --gray-800: #2a2e38;
    --gray-900: #1a1d24;
    --red: #c82828;
    --green: #1e8c46;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --max-width: 1140px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--gray-800);
    line-height: 1.6;
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* ── Navigation ── */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

.nav.scrolled {
    border-bottom-color: var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 64px;
}

.nav-logo { display: flex; align-items: center; }
.nav-logo-img { height: 36px; width: auto; }

.nav-links {
    display: flex;
    gap: 36px;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-600);
    transition: color 0.2s;
}

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

.nav-cta {
    font-size: 0.85rem !important;
    padding: 8px 18px !important;
}

/* ── Buttons ── */
.btn-primary {
    display: inline-block;
    background: var(--blue);
    color: var(--white);
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.25s;
    border: 2px solid var(--blue);
}

.btn-primary:hover {
    background: #0068b0;
    border-color: #0068b0;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(0,122,204,0.35);
}

.btn-outline {
    display: inline-block;
    background: transparent;
    color: var(--white);
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.25s;
    border: 2px solid rgba(255,255,255,0.5);
}

.btn-outline:hover {
    border-color: var(--white);
    background: rgba(255,255,255,0.1);
}

.btn-outline-dark {
    display: inline-block;
    background: transparent;
    color: var(--navy);
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    border: 2px solid var(--gray-200);
    transition: all 0.25s;
}

.btn-outline-dark:hover {
    border-color: var(--navy);
    background: var(--blue-light);
}

.btn-whatsapp {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #25D366;
    color: var(--white);
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.25s;
}

.btn-whatsapp:hover {
    background: #1fb855;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(37,211,102,0.35);
}

/* ── Hero ── */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 50%, #1a4a8a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(0,122,204,0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.03) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 0 24px;
}

.hero-wordmark {
    width: 100%;
    max-width: 620px;
    height: auto;
    margin: 0 auto 24px;
    display: block;
}

.hero-tagline {
    font-size: clamp(1.6rem, 3.5vw, 2.4rem);
    font-weight: 800;
    color: var(--white);
    letter-spacing: 0.32em;
    margin-bottom: 28px;
    text-shadow: 0 0 30px rgba(255,255,255,0.2);
}

.hero-subtitle {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.55);
    line-height: 1.7;
    margin-bottom: 44px;
    max-width: 460px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.4);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
}

/* ── Section ── */
.section {
    padding: 100px 24px;
}

.section-dark {
    background: var(--navy);
    color: var(--white);
}

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

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--blue);
    margin-bottom: 12px;
}

.tag-light {
    color: rgba(255,255,255,0.6);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.6rem);
    font-weight: 800;
    color: var(--gray-900);
    letter-spacing: -0.01em;
    margin-bottom: 16px;
}

.title-light { color: var(--white); }

.section-desc {
    font-size: 1.05rem;
    color: var(--gray-600);
    max-width: 560px;
    margin: 0 auto;
}

/* ── Product Categories ── */
.category {
    margin-bottom: 72px;
}

.category:last-child { margin-bottom: 0; }

.cat-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 6px;
}

.cat-icon {
    display: flex;
    align-items: center;
    color: var(--blue);
}

.cat-desc {
    color: var(--gray-600);
    font-size: 0.95rem;
    margin-bottom: 28px;
    margin-left: 30px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.product-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.product-img-wrap {
    background: var(--off-white);
    padding: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1 / 1;
}

.product-img-wrap img {
    max-width: 80%;
    max-height: 80%;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.product-card:hover .product-img-wrap img {
    transform: scale(1.05);
}

.product-info {
    padding: 18px 20px;
}

.product-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.product-info p {
    font-size: 0.85rem;
    color: var(--gray-600);
    line-height: 1.5;
}

/* ── About ── */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 64px;
    align-items: center;
}

.about-text p {
    font-size: 1rem;
    color: rgba(255,255,255,0.75);
    margin-bottom: 18px;
    line-height: 1.7;
}

.about-stats {
    display: flex;
    gap: 40px;
    margin-top: 36px;
}

.stat { display: flex; flex-direction: column; }

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--white);
    letter-spacing: -0.01em;
}

.stat-label {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.55);
    margin-top: 2px;
}

.about-visual {
    display: flex;
    justify-content: center;
}

.about-card {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    padding: 48px;
    text-align: center;
    backdrop-filter: blur(8px);
}

.about-logo {
    width: 140px;
    margin: 0 auto 20px;
    filter: brightness(0) invert(1);
}

.about-tagline {
    font-size: 1rem;
    color: rgba(255,255,255,0.6);
    font-weight: 500;
}

/* ── Contact ── */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.contact-card {
    text-align: center;
    padding: 40px 24px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.contact-card:hover {
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.contact-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: var(--blue-light);
    border-radius: 50%;
    color: var(--blue);
    margin-bottom: 16px;
}

.contact-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.contact-card p {
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-bottom: 20px;
}

.platform-links {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.platform-link {
    display: inline-block;
    background: var(--gray-100);
    color: var(--gray-800);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.2s;
}

.platform-link:hover {
    background: var(--navy);
    color: var(--white);
}

/* ── Footer ── */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: 64px 24px 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    height: 32px;
    width: auto;
    margin-bottom: 14px;
    filter: brightness(0) invert(1);
}

.footer-brand p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.5);
    max-width: 260px;
    line-height: 1.6;
}

.footer-links h4 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 14px;
    color: rgba(255,255,255,0.4);
}

.footer-links a {
    display: block;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: 8px;
    transition: color 0.2s;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.35);
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-cta { display: none; }

    .hero-title { font-size: 2.2rem; }
    .hero-subtitle { font-size: 1rem; }

    .section { padding: 64px 20px; }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .about-stats { gap: 24px; }
    .about-visual { order: -1; }

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

    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 480px) {
    .hero-buttons { flex-direction: column; align-items: center; }
    .footer-grid { grid-template-columns: 1fr; }
    .product-grid { grid-template-columns: 1fr; }
}