/* ================================================
   Alper Su Arıtma — Main Stylesheet
   Premium corporate water purification website
   ================================================ */

/* --- CSS Variables --- */
:root {
    --c-primary: #0c7abf;
    --c-primary-dark: #0a6ba8;
    --c-primary-light: #38bdf8;
    --c-primary-50: #e8f4fc;
    --c-primary-100: #c9e5f8;
    --c-accent: #0ea5e9;
    --c-text: #1e293b;
    --c-text-light: #64748b;
    --c-text-lighter: #94a3b8;
    --c-bg: #ffffff;
    --c-bg-alt: #f8fafc;
    --c-bg-card: #ffffff;
    --c-border: #e2e8f0;
    --c-border-light: #f1f5f9;
    --c-success: #10b981;
    --c-error: #ef4444;
    --c-whatsapp: #25d366;
    --c-whatsapp-dark: #1da851;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.06);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
    --shadow-xl: 0 16px 48px rgba(0,0,0,0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --header-h: 72px;
    --topbar-h: 40px;
    --max-w: 1200px;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.65;
    color: var(--c-text);
    background: var(--c-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea {
    font-family: inherit; font-size: inherit; color: inherit;
    border: none; outline: none; background: none;
}
button { cursor: pointer; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; }

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

/* --- Top Bar --- */
.top-bar {
    background: var(--c-primary);
    color: rgba(255,255,255,0.92);
    font-size: 13px;
    height: var(--topbar-h);
    display: flex;
    align-items: center;
    position: relative;
    z-index: 100;
}
.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.top-bar-left, .top-bar-right { display: flex; align-items: center; gap: 12px; }
.top-bar-item {
    display: flex;
    align-items: center;
    gap: 6px;
    transition: opacity 0.2s;
}
a.top-bar-item:hover { opacity: 0.8; }
.top-bar-divider {
    width: 1px; height: 14px;
    background: rgba(255,255,255,0.25);
}
.top-bar-whatsapp {
    background: rgba(255,255,255,0.12);
    padding: 4px 10px;
    border-radius: 6px;
    font-weight: 500;
}
.top-bar-whatsapp:hover { background: rgba(255,255,255,0.2); }

/* --- Header --- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 99;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--c-border-light);
    height: var(--header-h);
    transition: box-shadow 0.3s;
}
.site-header.scrolled { box-shadow: var(--shadow-md); }
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo-icon svg { display: block; }
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-brand { font-size: 18px; font-weight: 800; color: var(--c-primary); }
.logo-sub { font-size: 12px; font-weight: 600; color: var(--c-text-light); letter-spacing: 0.02em; }

.nav-list {
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-list a {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 14.5px;
    font-weight: 500;
    color: var(--c-text);
    transition: background 0.2s, color 0.2s;
}
.nav-list a:hover { background: var(--c-primary-50); color: var(--c-primary); }
.nav-list a.active { color: var(--c-primary); background: var(--c-primary-50); }

.header-actions { display: flex; align-items: center; gap: 12px; }
.header-cta { font-size: 14px; }

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 28px;
    padding: 4px 0;
}
.hamburger span {
    display: block;
    height: 2px;
    background: var(--c-text);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Nav */
.mobile-nav-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 200;
    opacity: 0; transition: opacity 0.3s;
}
.mobile-nav-overlay.active { display: block; opacity: 1; }
.mobile-nav {
    position: fixed;
    top: 0; right: -320px;
    width: 300px; max-width: 85vw;
    height: 100vh;
    background: var(--c-bg);
    z-index: 201;
    padding: 24px;
    overflow-y: auto;
    transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-xl);
}
.mobile-nav.active { right: 0; }
.mobile-nav-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--c-border);
}
.mobile-nav-close {
    font-size: 28px;
    color: var(--c-text-light);
    line-height: 1;
}
.mobile-nav-list { display: flex; flex-direction: column; gap: 4px; margin-bottom: 24px; }
.mobile-nav-list a {
    display: block;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 15px;
    transition: background 0.2s;
}
.mobile-nav-list a:hover, .mobile-nav-list a.active { background: var(--c-primary-50); color: var(--c-primary); }
.mobile-nav-cta { display: flex; flex-direction: column; gap: 10px; }

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    padding: 10px 22px;
    font-size: 14.5px;
    transition: all 0.25s ease;
    white-space: nowrap;
    line-height: 1.4;
}
.btn-sm { padding: 8px 18px; font-size: 13.5px; }
.btn-lg { padding: 14px 30px; font-size: 15px; border-radius: var(--radius-md); }
.btn-block { width: 100%; }

.btn-primary {
    background: var(--c-primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(12,122,191,0.25);
}
.btn-primary:hover {
    background: var(--c-primary-dark);
    box-shadow: 0 4px 16px rgba(12,122,191,0.3);
    transform: translateY(-1px);
}
.btn-outline {
    border: 1.5px solid var(--c-border);
    color: var(--c-text);
    background: var(--c-bg);
}
.btn-outline:hover {
    border-color: var(--c-primary);
    color: var(--c-primary);
    background: var(--c-primary-50);
}
.btn-white {
    background: #fff;
    color: var(--c-primary);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.btn-white:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.15); transform: translateY(-1px); }
.btn-outline-white {
    border: 1.5px solid rgba(255,255,255,0.5);
    color: #fff;
}
.btn-outline-white:hover { border-color: #fff; background: rgba(255,255,255,0.1); }
.btn-whatsapp {
    background: var(--c-whatsapp);
    color: #fff;
}
.btn-whatsapp:hover { background: var(--c-whatsapp-dark); }
.btn-whatsapp-alt {
    background: rgba(255,255,255,0.15);
    color: #fff;
    border: 1.5px solid rgba(255,255,255,0.3);
}
.btn-whatsapp-alt:hover { background: var(--c-whatsapp); border-color: var(--c-whatsapp); }

/* --- Hero Section --- */
.hero {
    position: relative;
    padding: 80px 0 60px;
    overflow: hidden;
    background: linear-gradient(170deg, var(--c-primary-50) 0%, var(--c-bg) 60%);
}
.hero-bg-shapes { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.hero-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.08;
    background: var(--c-primary);
}
.hero-shape-1 { width: 500px; height: 500px; top: -200px; right: -100px; }
.hero-shape-2 { width: 300px; height: 300px; bottom: -100px; left: -50px; }
.hero-shape-3 { width: 150px; height: 150px; top: 40%; left: 30%; background: var(--c-primary-light); }

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}
.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--c-primary-50);
    color: var(--c-primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 20px;
    border: 1px solid var(--c-primary-100);
}
.hero h1 {
    font-size: clamp(32px, 4.5vw, 52px);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    color: var(--c-text);
    letter-spacing: -0.02em;
}
.text-gradient {
    background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-desc {
    font-size: 17px;
    color: var(--c-text-light);
    max-width: 540px;
    margin-bottom: 28px;
    line-height: 1.7;
}
.hero-buttons { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 28px; }
.hero-trust { display: flex; gap: 20px; flex-wrap: wrap; }
.hero-trust-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13.5px;
    color: var(--c-text-light);
    font-weight: 500;
}
.hero-trust-item svg { color: var(--c-success); flex-shrink: 0; }

.hero-visual { display: flex; justify-content: center; align-items: center; }
.hero-card {
    background: var(--c-bg-card);
    border-radius: var(--radius-xl);
    padding: 36px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--c-border-light);
    text-align: center;
    width: 100%;
    max-width: 380px;
}
.hero-card-icon { margin-bottom: 24px; }
.hero-card-icon svg { display: inline-block; }
.hero-card-stats { display: flex; gap: 16px; }
.hero-stat {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 12px 8px;
    background: var(--c-bg-alt);
    border-radius: var(--radius-md);
}
.hero-stat-num { font-size: 24px; font-weight: 800; color: var(--c-primary); }
.hero-stat-label { font-size: 11.5px; color: var(--c-text-light); font-weight: 500; margin-top: 2px; }

/* --- Trust Badges --- */
.trust-badges {
    padding: 40px 0;
    border-bottom: 1px solid var(--c-border-light);
}
.badges-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.badge-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    background: var(--c-bg-alt);
    border: 1px solid var(--c-border-light);
    transition: box-shadow 0.25s;
}
.badge-item:hover { box-shadow: var(--shadow-md); }
.badge-icon {
    width: 48px; height: 48px;
    display: flex; align-items: center; justify-content: center;
    background: var(--c-primary-50);
    border-radius: var(--radius-sm);
    color: var(--c-primary);
    flex-shrink: 0;
}
.badge-text { display: flex; flex-direction: column; }
.badge-text strong { font-size: 14px; font-weight: 700; }
.badge-text span { font-size: 12.5px; color: var(--c-text-light); }

/* --- Section Shared --- */
.section { padding: 80px 0; }
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 48px;
}
.section-badge {
    display: inline-block;
    padding: 5px 14px;
    background: var(--c-primary-50);
    color: var(--c-primary);
    font-size: 12.5px;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.section-header h2 {
    font-size: clamp(26px, 3vw, 36px);
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}
.section-header p { font-size: 16px; color: var(--c-text-light); line-height: 1.7; }

/* --- Services Grid --- */
.services-section { background: var(--c-bg-alt); }
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.service-card {
    background: var(--c-bg-card);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    border: 1px solid var(--c-border-light);
    transition: box-shadow 0.3s, transform 0.3s;
}
.service-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}
.service-card-icon {
    width: 56px; height: 56px;
    display: flex; align-items: center; justify-content: center;
    background: var(--c-primary-50);
    border-radius: var(--radius-md);
    color: var(--c-primary);
    margin-bottom: 20px;
}
.service-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.service-card p { font-size: 14.5px; color: var(--c-text-light); line-height: 1.65; margin-bottom: 16px; }
.service-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--c-primary);
    font-weight: 600;
    font-size: 14px;
    transition: gap 0.2s;
}
.service-link:hover { gap: 10px; }

/* --- Why Us --- */
.why-us-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 60px;
    align-items: center;
}
.why-us-content h2 {
    font-size: clamp(26px, 3vw, 36px);
    font-weight: 800;
    margin-bottom: 16px;
}
.why-us-intro { color: var(--c-text-light); font-size: 16px; margin-bottom: 28px; line-height: 1.7; }
.why-us-list { display: flex; flex-direction: column; gap: 18px; }
.why-us-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}
.why-us-item-icon {
    width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
    background: var(--c-primary-50);
    border-radius: 8px;
    color: var(--c-primary);
    flex-shrink: 0;
    margin-top: 2px;
}
.why-us-item strong { display: block; font-size: 15px; margin-bottom: 2px; }
.why-us-item p { font-size: 14px; color: var(--c-text-light); line-height: 1.6; }

.why-us-card {
    background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    color: #fff;
}
.why-us-card-inner { display: flex; flex-direction: column; gap: 24px; }
.wuc-stat { text-align: center; }
.wuc-num { font-size: 42px; font-weight: 800; display: block; }
.wuc-label { font-size: 14px; opacity: 0.85; font-weight: 500; }
.wuc-divider { height: 1px; background: rgba(255,255,255,0.2); }

/* --- Products Preview --- */
.products-preview-section { background: var(--c-bg-alt); }
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.product-card {
    background: var(--c-bg-card);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    border: 1px solid var(--c-border-light);
    text-align: center;
    transition: box-shadow 0.3s, transform 0.3s;
    position: relative;
}
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.product-card-featured {
    border-color: var(--c-primary);
    box-shadow: 0 0 0 1px var(--c-primary), var(--shadow-md);
}
.product-card-badge {
    position: absolute;
    top: -12px; left: 50%; transform: translateX(-50%);
    background: var(--c-primary);
    color: #fff;
    padding: 4px 16px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}
.product-card-icon {
    color: var(--c-primary);
    margin-bottom: 20px;
}
.product-card-icon svg { display: inline-block; }
.product-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.product-card p { font-size: 14px; color: var(--c-text-light); line-height: 1.65; margin-bottom: 16px; }
.product-features {
    text-align: left;
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.product-features li {
    font-size: 13.5px;
    color: var(--c-text);
    padding-left: 20px;
    position: relative;
}
.product-features li::before {
    content: '';
    position: absolute;
    left: 0; top: 7px;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--c-primary-100);
    border: 2px solid var(--c-primary);
}

/* --- Process --- */
.process-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}
.process-step {
    text-align: center;
    padding: 28px 16px;
    border-radius: var(--radius-lg);
    background: var(--c-bg-alt);
    border: 1px solid var(--c-border-light);
    transition: box-shadow 0.25s;
}
.process-step:hover { box-shadow: var(--shadow-md); }
.process-num {
    font-size: 32px;
    font-weight: 800;
    color: var(--c-primary);
    opacity: 0.25;
    margin-bottom: 12px;
}
.process-step h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.process-step p { font-size: 13.5px; color: var(--c-text-light); line-height: 1.6; }

/* --- Testimonials --- */
.testimonials-section { background: var(--c-bg-alt); }
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.testimonial-card {
    background: var(--c-bg-card);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    border: 1px solid var(--c-border-light);
    transition: box-shadow 0.25s;
}
.testimonial-card:hover { box-shadow: var(--shadow-md); }
.testimonial-stars { color: #f59e0b; font-size: 16px; letter-spacing: 2px; margin-bottom: 16px; }
.testimonial-card > p { font-size: 14.5px; color: var(--c-text-light); line-height: 1.7; margin-bottom: 20px; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar {
    width: 42px; height: 42px;
    border-radius: 50%;
    background: var(--c-primary-50);
    color: var(--c-primary);
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; font-weight: 700;
    flex-shrink: 0;
}
.testimonial-author strong { display: block; font-size: 14px; }
.testimonial-author span { font-size: 12.5px; color: var(--c-text-light); }

/* --- FAQ --- */
.faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 8px; }
.faq-item {
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color 0.3s;
}
.faq-item.active { border-color: var(--c-primary-100); }
.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    font-weight: 600;
    font-size: 15px;
    text-align: left;
    cursor: pointer;
    background: var(--c-bg-card);
    transition: background 0.2s;
    gap: 16px;
}
.faq-question:hover { background: var(--c-bg-alt); }
.faq-chevron {
    flex-shrink: 0;
    color: var(--c-text-lighter);
    transition: transform 0.3s;
}
.faq-item.active .faq-chevron { transform: rotate(180deg); color: var(--c-primary); }
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}
.faq-answer p {
    padding: 0 24px 20px;
    font-size: 14.5px;
    color: var(--c-text-light);
    line-height: 1.7;
}

/* --- CTA Section --- */
.cta-section {
    background: linear-gradient(135deg, var(--c-primary), #0369a1);
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.cta-bg-shapes { position: absolute; inset: 0; pointer-events: none; }
.cta-shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,0.06);
}
.cta-shape-1 { width: 400px; height: 400px; top: -150px; right: -100px; }
.cta-shape-2 { width: 250px; height: 250px; bottom: -80px; left: -60px; }
.cta-inner { position: relative; z-index: 1; }
.cta-inner h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 800; margin-bottom: 12px; }
.cta-inner p { font-size: 16px; opacity: 0.9; margin-bottom: 28px; max-width: 540px; margin-left: auto; margin-right: auto; }
.cta-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* --- Page Hero (Inner Pages) --- */
.page-hero {
    background: linear-gradient(170deg, var(--c-primary-50) 0%, var(--c-bg) 100%);
    padding: 60px 0 50px;
    text-align: center;
}
.page-hero h1 {
    font-size: clamp(28px, 3.5vw, 42px);
    font-weight: 800;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}
.page-hero p { font-size: 16px; color: var(--c-text-light); max-width: 500px; margin: 0 auto; }

/* --- About Page --- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 60px;
    align-items: start;
}
.about-text h2 { font-size: 30px; font-weight: 800; margin-bottom: 20px; }
.about-text p { font-size: 15.5px; color: var(--c-text-light); line-height: 1.75; margin-bottom: 16px; }
.about-card {
    background: var(--c-bg-alt);
    border: 1px solid var(--c-border-light);
    border-radius: var(--radius-xl);
    padding: 32px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}
.about-card-item {
    text-align: center;
    padding: 16px;
    background: var(--c-bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--c-border-light);
}
.about-card-num { display: block; font-size: 32px; font-weight: 800; color: var(--c-primary); }
.about-card-label { font-size: 12.5px; color: var(--c-text-light); font-weight: 500; }

/* --- Values --- */
.values-section { background: var(--c-bg-alt); }
.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.value-card {
    background: var(--c-bg-card);
    border: 1px solid var(--c-border-light);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: box-shadow 0.25s, transform 0.25s;
}
.value-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.value-icon {
    width: 56px; height: 56px;
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--c-primary-50);
    border-radius: var(--radius-md);
    color: var(--c-primary);
    margin-bottom: 18px;
}
.value-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.value-card p { font-size: 14px; color: var(--c-text-light); line-height: 1.65; }

/* --- Services Detail Page --- */
.service-detail {
    border-bottom: 1px solid var(--c-border-light);
    padding-bottom: 48px;
    margin-bottom: 48px;
}
.service-detail:last-child { border-bottom: none; margin-bottom: 0; }
.service-detail-content { max-width: 780px; }
.service-detail-icon {
    width: 64px; height: 64px;
    display: flex; align-items: center; justify-content: center;
    background: var(--c-primary-50);
    border-radius: var(--radius-lg);
    color: var(--c-primary);
    margin-bottom: 20px;
}
.service-detail h2 { font-size: 26px; font-weight: 800; margin-bottom: 16px; }
.service-detail p { font-size: 15.5px; color: var(--c-text-light); line-height: 1.75; margin-bottom: 14px; }
.service-advantages { margin: 24px 0; }
.service-advantages h3 { font-size: 16px; font-weight: 700; margin-bottom: 12px; }
.service-advantages ul { display: flex; flex-direction: column; gap: 8px; }
.service-advantages li {
    font-size: 14.5px;
    color: var(--c-text);
    padding-left: 24px;
    position: relative;
}
.service-advantages li::before {
    content: '';
    position: absolute;
    left: 0; top: 8px;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--c-primary-50);
    border: 2px solid var(--c-primary);
}

/* --- Products Page --- */
.products-alt-bg { background: var(--c-bg-alt); }
.products-page-grid {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.product-page-card {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
    background: var(--c-bg-card);
    border: 1px solid var(--c-border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: box-shadow 0.25s;
}
.product-page-card:hover { box-shadow: var(--shadow-lg); }
.product-page-visual {
    background: var(--c-bg-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 240px;
}
.product-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-text-lighter);
}
.product-page-info { padding: 28px 28px 28px 0; }
.product-page-info h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.product-page-info > p { font-size: 14.5px; color: var(--c-text-light); line-height: 1.7; margin-bottom: 16px; }
.product-specs { margin-bottom: 20px; display: flex; flex-direction: column; gap: 6px; }
.product-specs li { font-size: 14px; color: var(--c-text-light); }
.product-specs strong { color: var(--c-text); }

/* Filter Cards */
.filter-cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.filter-card {
    background: var(--c-bg-card);
    border: 1px solid var(--c-border-light);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    text-align: center;
    transition: box-shadow 0.25s, transform 0.25s;
}
.filter-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.filter-card-icon {
    color: var(--c-primary);
    margin-bottom: 14px;
}
.filter-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.filter-card p { font-size: 13.5px; color: var(--c-text-light); line-height: 1.6; margin-bottom: 14px; }

/* --- Contact Page --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 40px;
    align-items: start;
}
.contact-form-wrapper h2 { font-size: 26px; font-weight: 800; margin-bottom: 8px; }
.contact-form-desc { font-size: 15px; color: var(--c-text-light); margin-bottom: 24px; }

.form-alert {
    display: flex;
    gap: 12px;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    font-size: 14px;
    align-items: flex-start;
}
.form-alert svg { flex-shrink: 0; margin-top: 2px; }
.form-alert strong { display: block; margin-bottom: 4px; }
.form-alert p { font-size: 13.5px; }
.form-alert-success { background: #ecfdf5; border: 1px solid #a7f3d0; color: #065f46; }
.form-alert-success svg { color: var(--c-success); }
.form-alert-error { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }
.form-alert-error svg { color: var(--c-error); }

.contact-form { display: flex; flex-direction: column; gap: 16px; }
.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: 14px; font-weight: 600; color: var(--c-text); }
.required { color: var(--c-error); }
.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    border: 1.5px solid var(--c-border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: var(--c-bg);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--c-primary);
    box-shadow: 0 0 0 3px rgba(12,122,191,0.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2394a3b8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; }

.contact-info-card {
    background: var(--c-bg-alt);
    border: 1px solid var(--c-border-light);
    border-radius: var(--radius-lg);
    padding: 28px;
    margin-bottom: 16px;
}
.contact-info-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.contact-info-card > p { font-size: 14px; color: var(--c-text-light); margin-bottom: 20px; line-height: 1.6; }
.contact-info-list { display: flex; flex-direction: column; gap: 12px; }
.contact-info-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    transition: background 0.2s;
}
a.contact-info-item:hover { background: var(--c-primary-50); }
.contact-info-icon {
    width: 40px; height: 40px;
    display: flex; align-items: center; justify-content: center;
    background: var(--c-primary-50);
    border-radius: var(--radius-sm);
    color: var(--c-primary);
    flex-shrink: 0;
}
.contact-info-icon-wa { background: #dcfce7; color: var(--c-whatsapp); }
.contact-info-item strong { display: block; font-size: 14px; }
.contact-info-item span { font-size: 13px; color: var(--c-text-light); }

.hours-list { display: flex; flex-direction: column; gap: 8px; }
.hours-row { display: flex; justify-content: space-between; font-size: 14px; padding: 8px 0; border-bottom: 1px solid var(--c-border-light); }
.hours-row:last-child { border-bottom: none; }
.hours-closed strong { color: var(--c-error); }
.hours-note { font-size: 13px; color: var(--c-text-light); margin-top: 12px; }

.map-placeholder {
    border: 2px dashed var(--c-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}
.map-placeholder-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    text-align: center;
    color: var(--c-text-lighter);
    gap: 12px;
}
.map-placeholder-inner p { font-size: 13px; }

/* --- Footer --- */
.site-footer {
    background: #0f172a;
    color: rgba(255,255,255,0.8);
    padding: 60px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
}
.footer-about { padding-right: 20px; }
.footer-logo {
    display: inline-block;
    margin-bottom: 14px;
    font-size: 18px;
}
.footer-logo .logo-brand { color: #fff; }
.footer-logo .logo-sub { color: rgba(255,255,255,0.6); }
.footer-about p { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.6); }

.footer-col h3 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a {
    font-size: 14px;
    color: rgba(255,255,255,0.55);
    transition: color 0.2s;
}
.footer-links a:hover { color: #fff; }

.footer-contact { display: flex; flex-direction: column; gap: 12px; }
.footer-contact li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255,255,255,0.55);
}
.footer-contact svg { color: rgba(255,255,255,0.35); flex-shrink: 0; }
.footer-contact a { transition: color 0.2s; }
.footer-contact a:hover { color: #fff; }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    text-align: center;
}
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.4); }

/* --- WhatsApp Float --- */
.whatsapp-float {
    position: fixed;
    bottom: 24px; right: 24px;
    width: 56px; height: 56px;
    background: var(--c-whatsapp);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: #fff;
    box-shadow: 0 4px 20px rgba(37,211,102,0.35);
    z-index: 90;
    transition: transform 0.3s, box-shadow 0.3s;
}
.whatsapp-float:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 28px rgba(37,211,102,0.45);
}

/* ================================================
   Responsive
   ================================================ */
@media (max-width: 1024px) {
    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { order: -1; }
    .hero-card { max-width: 360px; margin: 0 auto; }
    .hero { padding: 50px 0 40px; }
    .hero h1 { max-width: 600px; }
    .badges-grid { grid-template-columns: repeat(2, 1fr); }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .process-grid { grid-template-columns: repeat(3, 1fr); }
    .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
    .why-us-grid { grid-template-columns: 1fr; gap: 40px; }
    .why-us-card { max-width: 500px; }
    .why-us-card-inner { flex-direction: row; }
    .wuc-divider { width: 1px; height: auto; }
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .about-card { max-width: 500px; }
    .values-grid { grid-template-columns: repeat(2, 1fr); }
    .filter-cards-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .product-page-card { grid-template-columns: 220px 1fr; }
}

@media (max-width: 768px) {
    :root { --header-h: 64px; }
    .top-bar-hours { display: none; }
    .top-bar-divider { display: none; }
    .main-nav { display: none; }
    .header-cta { display: none; }
    .hamburger { display: flex; }

    .hero { padding: 36px 0 32px; }
    .hero-visual { display: none; }
    .hero h1 { font-size: 30px; }
    .hero-desc { font-size: 15.5px; }
    .hero-buttons { flex-direction: column; }
    .hero-buttons .btn { width: 100%; }
    .hero-trust { gap: 14px; }

    .section { padding: 56px 0; }
    .section-header { margin-bottom: 36px; }

    .badges-grid { grid-template-columns: 1fr; gap: 12px; }
    .services-grid { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: 1fr; }
    .process-grid { grid-template-columns: 1fr; gap: 12px; }
    .testimonials-grid { grid-template-columns: 1fr; }
    .values-grid { grid-template-columns: 1fr; }
    .filter-cards-grid { grid-template-columns: 1fr; }

    .product-page-card { grid-template-columns: 1fr; }
    .product-page-visual { min-height: 160px; }
    .product-page-info { padding: 20px 24px 24px; }

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

    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    .footer-about { padding-right: 0; }

    .cta-buttons { flex-direction: column; align-items: center; }
    .cta-buttons .btn { width: 100%; max-width: 320px; }

    .page-hero { padding: 40px 0 36px; }
    .page-hero h1 { font-size: 28px; }

    .why-us-card-inner { flex-direction: column; }
    .wuc-divider { width: auto; height: 1px; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero h1 { font-size: 26px; }
    .hero-badge { font-size: 12px; }
    .service-card { padding: 24px 20px; }
    .process-step { padding: 20px 14px; }
    .testimonial-card { padding: 24px 20px; }
    .whatsapp-float { bottom: 16px; right: 16px; width: 50px; height: 50px; }
    .whatsapp-float svg { width: 24px; height: 24px; }
}