/*
Theme Name: Synthetra
Theme URI: https://synthetra.com
Author: Synthetra
Author URI: https://synthetra.com
Description: Modern, minimal homepage theme for Synthetra — a parent company showcasing its portfolio of products. Fully customizable via the WordPress Customizer.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: synthetra
Tags: one-page, custom-colors, custom-logo, featured-images, theme-options
*/

/* ========================================
   CSS Custom Properties
   ======================================== */
:root {
    --color-primary: #0f172a;
    --color-primary-light: #1e293b;
    --color-accent: #3b82f6;
    --color-accent-hover: #2563eb;
    --color-text: #334155;
    --color-text-light: #64748b;
    --color-text-inverse: #f8fafc;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-dark: #0f172a;
    --color-border: #e2e8f0;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
    --max-width: 1200px;
    --section-padding: 120px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   Header / Navigation
   ======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow var(--transition);
}

.site-header.scrolled {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

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

.site-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.site-brand img {
    height: 36px;
    width: auto;
}

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

.nav-links a {
    color: var(--color-text-light);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    transition: color var(--transition);
}

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

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    margin: 6px 0;
    transition: var(--transition);
    border-radius: 2px;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    padding: 180px 0 var(--section-padding);
    background: var(--color-bg);
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: "";
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    max-width: 720px;
}

.hero-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: 20px;
}

.hero h1 {
    font-size: clamp(2.5rem, 5.5vw, 4rem);
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.hero p {
    font-size: 1.2rem;
    color: var(--color-text-light);
    line-height: 1.7;
    max-width: 560px;
    margin-bottom: 40px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 8px;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-text-inverse);
}

.btn-primary:hover {
    background: var(--color-primary-light);
    color: var(--color-text-inverse);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
}

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

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* ========================================
   Products Section
   ======================================== */
.products {
    padding: var(--section-padding) 0;
    background: var(--color-bg-alt);
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 64px;
}

.section-header h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.05rem;
    color: var(--color-text-light);
}

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

.product-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 40px 32px;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
    border-color: transparent;
}

.product-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--color-accent), #6366f1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: #fff;
    font-size: 24px;
}

.product-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.product-card p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.6;
    flex: 1;
    margin-bottom: 24px;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-accent);
}

.product-link:hover {
    gap: 10px;
}

.product-link svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition);
}

.product-link:hover svg {
    transform: translateX(3px);
}

/* ========================================
   About Section
   ======================================== */
.about {
    padding: var(--section-padding) 0;
    background: var(--color-bg);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-content h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

.about-content p {
    font-size: 1.05rem;
    color: var(--color-text-light);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-visual {
    position: relative;
    aspect-ratio: 1;
    border-radius: 24px;
    background: linear-gradient(135deg, var(--color-primary) 0%, #1e40af 50%, var(--color-accent) 100%);
    overflow: hidden;
}

.about-visual::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 40%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(255, 255, 255, 0.05) 0%, transparent 40%);
}

.about-visual::after {
    content: "S";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 8rem;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.08);
    font-family: var(--font-sans);
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    padding: var(--section-padding) 0;
    background: var(--color-bg-dark);
    color: var(--color-text-inverse);
}

.contact .section-header h2 {
    color: var(--color-text-inverse);
}

.contact .section-header p {
    color: rgba(248, 250, 252, 0.6);
}

.contact-content {
    text-align: center;
    max-width: 500px;
    margin: 0 auto;
}

.contact-email {
    display: inline-block;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: 40px;
    padding: 12px 28px;
    border: 1.5px solid rgba(59, 130, 246, 0.3);
    border-radius: 8px;
    transition: all var(--transition);
}

.contact-email:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    color: rgba(248, 250, 252, 0.7);
    transition: all var(--transition);
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--color-text-inverse);
    transform: translateY(-2px);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    padding: 32px 0;
    background: var(--color-bg-dark);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

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

.footer-copy {
    font-size: 0.85rem;
    color: rgba(248, 250, 252, 0.4);
}

.footer-links {
    display: flex;
    gap: 24px;
    list-style: none;
}

.footer-links a {
    font-size: 0.85rem;
    color: rgba(248, 250, 252, 0.4);
}

.footer-links a:hover {
    color: rgba(248, 250, 252, 0.8);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 968px) {
    :root {
        --section-padding: 80px;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-visual {
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 64px;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(12px);
        padding: 24px;
        gap: 0;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: 12px 0;
        font-size: 1rem;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-links li:last-child a {
        border-bottom: none;
    }

    .mobile-toggle {
        display: block;
    }

    .hero {
        padding: 140px 0 var(--section-padding);
    }

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

    .footer-inner {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}