/* ==========================================================================
   DETERGA — Modern Corporate Industrial Design System
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap');

/* ---------- Reset & Tokens ---------- */

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

:root {
    /* Brand palette */
    --navy-900: #07172E;
    --navy-800: #0B1F3A;
    --navy-700: #13355F;
    --navy-600: #1E4A82;
    --cyan-500: #00B5E2;
    --cyan-400: #38C9EE;
    --cyan-50: #E6F7FC;

    --white: #FFFFFF;
    --off-white: #F5F7FA;
    --gray-50: #F8FAFC;
    --gray-100: #EEF1F6;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-900: #0F172A;

    --success: #10B981;

    /* Typography */
    --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;

    /* Layout */
    --max-w: 1280px;
    --radius-sm: 6px;
    --radius: 12px;
    --radius-lg: 20px;

    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .04);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, .08), 0 2px 4px rgba(15, 23, 42, .04);
    --shadow-lg: 0 20px 45px -15px rgba(11, 31, 58, .25);
    --shadow-cyan: 0 12px 32px -8px rgba(0, 181, 226, .45);

    --transition: 200ms cubic-bezier(.4, 0, .2, 1);
}

/* ---------- Base ---------- */

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--gray-900);
    background: var(--white);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

button {
    font: inherit;
    cursor: pointer;
    border: 0;
    background: transparent;
    color: inherit;
}

h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--navy-900);
}

p {
    color: var(--gray-700);
}

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

/* ---------- Topbar ---------- */

.topbar {
    background: var(--navy-900);
    color: var(--gray-300);
    font-size: 13px;
}

.topbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 10px;
    padding-bottom: 10px;
    gap: 16px;
    flex-wrap: wrap;
}

.topbar-info {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.topbar-info a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: color var(--transition);
}

.topbar-info a:hover {
    color: var(--cyan-400);
}

.topbar-info svg {
    width: 14px;
    height: 14px;
    opacity: .7;
}

.topbar-tagline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    letter-spacing: .04em;
    text-transform: uppercase;
    font-size: 11px;
    color: var(--cyan-400);
}

.topbar-tagline::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--cyan-400);
    box-shadow: 0 0 0 4px rgba(0, 181, 226, .15);
}

/* ---------- Nav ---------- */

.site-nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, .92);
    backdrop-filter: saturate(140%) blur(12px);
    -webkit-backdrop-filter: saturate(140%) blur(12px);
    border-bottom: 1px solid var(--gray-200);
}

.site-nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 18px;
    padding-bottom: 18px;
    gap: 24px;
}

.brand-logo img {
    height: 38px;
    width: auto;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-links {
    display: flex;
    gap: 26px;
    list-style: none;
}

.nav-links a {
    font-size: 13px;
    font-weight: 500;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: var(--gray-700);
    position: relative;
    padding: 6px 0;
    transition: color var(--transition);
    white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--navy-900);
}

.nav-links a::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 2px;
    background: var(--cyan-500);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    transform: scaleX(1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.lang-switch {
    display: inline-flex;
    background: var(--gray-100);
    border-radius: 999px;
    padding: 4px;
    gap: 2px;
}

.lang-switch .lang-btn {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .05em;
    padding: 6px 12px;
    border-radius: 999px;
    color: var(--gray-600);
    transition: all var(--transition);
}

.lang-switch .lang-btn.active {
    background: var(--navy-900);
    color: var(--white);
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--navy-900);
    color: var(--white);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .05em;
    text-transform: uppercase;
    border-radius: 999px;
    transition: all var(--transition);
    white-space: nowrap;
}

.nav-cta:hover {
    background: var(--cyan-500);
    transform: translateY(-1px);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
    cursor: pointer;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--navy-900);
    transition: all var(--transition);
}

.hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Buttons ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 26px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: .05em;
    text-transform: uppercase;
    border-radius: 999px;
    transition: all var(--transition);
    cursor: pointer;
    white-space: nowrap;
}

.btn-primary {
    background: var(--cyan-500);
    color: var(--navy-900);
    box-shadow: var(--shadow-cyan);
}

.btn-primary:hover {
    background: var(--cyan-400);
    transform: translateY(-2px);
}

.btn-dark {
    background: var(--navy-900);
    color: var(--white);
}

.btn-dark:hover {
    background: var(--navy-700);
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: var(--white);
    border: 1.5px solid rgba(255, 255, 255, .35);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, .08);
    border-color: var(--white);
}

.btn-outline {
    background: transparent;
    color: var(--navy-900);
    border: 1.5px solid var(--gray-300);
}

.btn-outline:hover {
    border-color: var(--navy-900);
    background: var(--navy-900);
    color: var(--white);
}

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

.btn-arrow:hover svg {
    transform: translateX(4px);
}

/* ---------- Hero ---------- */

.hero {
    position: relative;
    background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-700) 100%);
    color: var(--white);
    overflow: hidden;
    padding: 96px 0 120px;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(ellipse at 80% 20%, rgba(0, 181, 226, .25) 0%, transparent 50%),
        radial-gradient(ellipse at 20% 80%, rgba(30, 74, 130, .35) 0%, transparent 50%);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, .025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .025) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: var(--cyan-400);
    margin-bottom: 24px;
}

.hero-eyebrow::before {
    content: '';
    width: 32px;
    height: 1px;
    background: var(--cyan-400);
}

.hero h1 {
    font-size: clamp(38px, 5.5vw, 68px);
    line-height: 1.05;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

.hero h1 .accent {
    color: var(--cyan-400);
    font-style: italic;
    font-weight: 500;
}

.hero p.lead {
    font-size: 18px;
    line-height: 1.65;
    color: rgba(255, 255, 255, .75);
    max-width: 560px;
    margin-bottom: 36px;
}

.hero-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    max-width: 560px;
    padding-top: 36px;
    border-top: 1px solid rgba(255, 255, 255, .12);
}

.hero-stat .num {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    color: var(--white);
    letter-spacing: -0.02em;
}

.hero-stat .num .unit {
    color: var(--cyan-400);
    margin-left: 2px;
}

.hero-stat .label {
    font-size: 12px;
    color: rgba(255, 255, 255, .55);
    text-transform: uppercase;
    letter-spacing: .08em;
    margin-top: 4px;
}

/* Hero visual card */
.hero-visual {
    position: relative;
    aspect-ratio: 4 / 5;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: linear-gradient(160deg, rgba(0, 181, 226, .18), rgba(11, 31, 58, .5));
    border: 1px solid rgba(255, 255, 255, .08);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 32px;
}

.hero-visual::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(140deg, rgba(0, 181, 226, .4), transparent 40%);
    z-index: -1;
    border-radius: inherit;
}

.hero-badge {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .15);
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .12em;
    color: var(--white);
    text-transform: uppercase;
}

.hero-badge .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, .25);
}

.hero-saving {
    color: var(--white);
}

.hero-saving .label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .14em;
    color: var(--cyan-400);
    margin-bottom: 12px;
}

.hero-saving .figure {
    font-family: var(--font-display);
    font-size: clamp(72px, 10vw, 120px);
    font-weight: 700;
    line-height: .9;
    letter-spacing: -0.04em;
    color: var(--white);
}

.hero-saving .figure .sym {
    color: var(--cyan-400);
}

.hero-saving .desc {
    margin-top: 16px;
    font-size: 14px;
    line-height: 1.5;
    color: rgba(255, 255, 255, .65);
    max-width: 280px;
}

/* ---------- Trust strip ---------- */

.trust-strip {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 28px 0;
}

.trust-strip .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}

.trust-item {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--gray-700);
    font-size: 14px;
    font-weight: 500;
}

.trust-item .icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--cyan-50);
    color: var(--cyan-500);
    display: grid;
    place-items: center;
}

.trust-item .icon svg {
    width: 18px;
    height: 18px;
}

/* ---------- Section header ---------- */

section {
    padding: 100px 0;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: var(--cyan-500);
    margin-bottom: 18px;
}

.section-tag::before {
    content: '';
    width: 28px;
    height: 1px;
    background: var(--cyan-500);
}

.section-title {
    font-size: clamp(30px, 3.8vw, 48px);
    line-height: 1.1;
    margin-bottom: 18px;
    max-width: 720px;
}

.section-lead {
    font-size: 17px;
    color: var(--gray-600);
    max-width: 640px;
    line-height: 1.65;
}

.section-head {
    margin-bottom: 56px;
}

.section-head.center {
    text-align: center;
}

.section-head.center .section-title,
.section-head.center .section-lead {
    margin-left: auto;
    margin-right: auto;
}

.section-head.center .section-tag {
    justify-content: center;
}

.section-head.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: end;
}

/* ---------- About preview ---------- */

.about-preview {
    background: var(--gray-50);
}

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

.about-visual {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-lg);
    background-color: var(--navy-800);
    background-image: url('https://deterga.b-cdn.net/banner/deterga-ekip-mutlu.png');
    background-size: cover;
    background-position: center;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-visual::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(180deg, rgba(7, 23, 46, .25) 0%, rgba(7, 23, 46, .85) 100%),
        radial-gradient(circle at 70% 30%, rgba(0, 181, 226, .25) 0%, transparent 55%);
}

.about-visual-content {
    position: absolute;
    inset: 0;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: var(--white);
}

.about-visual-content .quote {
    font-family: var(--font-display);
    font-size: clamp(24px, 2.4vw, 34px);
    line-height: 1.25;
    font-weight: 500;
    color: var(--white);
}

.about-visual-content .quote .accent {
    color: var(--cyan-400);
}

.about-visual-content .meta {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.about-visual-content .meta .label {
    font-size: 11px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, .55);
    margin-bottom: 6px;
}

.about-visual-content .meta .value {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 600;
    color: var(--white);
}

.about-text h2 {
    margin-bottom: 24px;
}

.about-text p + p {
    margin-top: 18px;
}

.about-text .btn {
    margin-top: 32px;
}

/* ---------- Why us / value props ---------- */

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.value-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.value-card::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 3px;
    background: var(--cyan-500);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.value-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--gray-300);
}

.value-card:hover::after {
    transform: scaleX(1);
}

.value-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: var(--navy-900);
    color: var(--cyan-400);
    display: grid;
    place-items: center;
    margin-bottom: 24px;
}

.value-icon svg {
    width: 26px;
    height: 26px;
}

.value-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.value-card p {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.6;
}

/* ---------- Sectors ---------- */

.sectors {
    background: var(--navy-900);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.sectors::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(ellipse at 90% 10%, rgba(0, 181, 226, .15) 0%, transparent 45%);
    pointer-events: none;
}

.sectors .container {
    position: relative;
}

.sectors .section-title,
.sectors h3 {
    color: var(--white);
}

.sectors .section-lead {
    color: rgba(255, 255, 255, .65);
}

.sectors-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.sector-card {
    background: rgba(255, 255, 255, .03);
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: var(--radius);
    padding: 32px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.sector-card:hover {
    border-color: rgba(0, 181, 226, .4);
    background: rgba(0, 181, 226, .04);
    transform: translateY(-4px);
}

.sector-card .num {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 500;
    color: var(--cyan-400);
    letter-spacing: .1em;
    margin-bottom: 24px;
}

.sector-card h3 {
    font-size: 24px;
    margin-bottom: 12px;
}

.sector-card p {
    color: rgba(255, 255, 255, .6);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 24px;
}

.sector-card .arrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--cyan-400);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .05em;
    text-transform: uppercase;
}

.sector-card .arrow svg {
    width: 14px;
    height: 14px;
    transition: transform var(--transition);
}

.sector-card:hover .arrow svg {
    transform: translateX(4px);
}

/* ---------- Featured products ---------- */

.featured-products {
    background: var(--white);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    border-color: var(--navy-900);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.product-image {
    aspect-ratio: 4 / 3;
    background: linear-gradient(135deg, #FAFCFE 0%, #EDF2F8 100%);
    position: relative;
    overflow: hidden;
    display: grid;
    place-items: center;
}

.product-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 50% 60%, rgba(0, 181, 226, .12) 0%, transparent 60%);
    pointer-events: none;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 14px;
    position: relative;
    z-index: 1;
    transition: transform var(--transition);
    mix-blend-mode: multiply;
}

.product-card:hover .product-image img {
    transform: translateY(-3px) scale(1.03);
}

.product-image .bottle-icon {
    width: 38%;
    color: var(--navy-700);
    opacity: .35;
    transition: transform var(--transition), opacity var(--transition);
    position: relative;
    z-index: 1;
}

.product-card:hover .bottle-icon {
    opacity: .55;
    transform: translateY(-4px);
}

.product-image .volume-tag {
    position: absolute;
    top: 14px;
    right: 14px;
    background: var(--navy-900);
    color: var(--white);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .08em;
    padding: 6px 10px;
    border-radius: 6px;
}

.product-body {
    padding: 22px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-cat {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--cyan-500);
    margin-bottom: 10px;
}

.product-card h3 {
    font-size: 17px;
    line-height: 1.3;
    margin-bottom: 8px;
    min-height: 44px;
}

.product-card .product-desc {
    font-size: 13px;
    color: var(--gray-600);
    line-height: 1.55;
    margin-bottom: 18px;
    flex: 1;
}

.product-card .product-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: var(--navy-900);
    margin-top: auto;
}

.product-card .product-link svg {
    width: 14px;
    height: 14px;
    transition: transform var(--transition);
}

.product-card:hover .product-link svg {
    transform: translateX(4px);
}

.product-card .product-link:hover {
    color: var(--cyan-500);
}

/* ---------- Savings highlight band ---------- */

.savings-band {
    background: linear-gradient(135deg, var(--cyan-500) 0%, #0099C2 100%);
    padding: 80px 0;
    color: var(--navy-900);
    position: relative;
    overflow: hidden;
}

.savings-band::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 85% 50%, rgba(255, 255, 255, .25) 0%, transparent 40%);
}

.savings-band .container {
    position: relative;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: center;
}

.savings-band h2 {
    font-size: clamp(28px, 3.6vw, 44px);
    color: var(--navy-900);
    margin-bottom: 18px;
    line-height: 1.1;
}

.savings-band p {
    font-size: 17px;
    color: rgba(7, 23, 46, .85);
    max-width: 520px;
}

.savings-band .savings-cta {
    text-align: right;
}

/* ---------- CTA contact ---------- */

.contact-section {
    background: var(--gray-50);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 64px;
    align-items: start;
}

.contact-info h2 {
    margin-bottom: 18px;
}

.contact-info p.section-lead {
    margin-bottom: 36px;
}

.contact-list {
    display: grid;
    gap: 16px;
}

.contact-item {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 22px 24px;
    display: flex;
    align-items: center;
    gap: 18px;
    transition: all var(--transition);
}

.contact-item:hover {
    border-color: var(--cyan-500);
    transform: translateX(4px);
}

.contact-item .icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: var(--cyan-50);
    color: var(--cyan-500);
    display: grid;
    place-items: center;
    flex-shrink: 0;
}

.contact-item .icon svg {
    width: 20px;
    height: 20px;
}

.contact-item .meta .label {
    font-size: 12px;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: .08em;
    margin-bottom: 2px;
}

.contact-item .meta .value {
    font-weight: 600;
    color: var(--navy-900);
    font-size: 16px;
}

.contact-form {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-sm);
}

.contact-form h3 {
    font-size: 22px;
    margin-bottom: 8px;
}

.contact-form .form-lead {
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.form-field {
    display: flex;
    flex-direction: column;
    margin-bottom: 16px;
}

.form-field label {
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-700);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: 6px;
}

.form-field input,
.form-field textarea,
.form-field select {
    font: inherit;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    padding: 12px 14px;
    background: var(--gray-50);
    transition: all var(--transition);
    color: var(--gray-900);
}

.form-field input:focus,
.form-field textarea:focus,
.form-field select:focus {
    outline: none;
    border-color: var(--cyan-500);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(0, 181, 226, .12);
}

.form-field textarea {
    min-height: 120px;
    resize: vertical;
    font-family: inherit;
}

.contact-form .btn {
    width: 100%;
    margin-top: 8px;
}

/* ---------- Footer ---------- */

.site-footer {
    background: var(--navy-900);
    color: rgba(255, 255, 255, .65);
    padding: 80px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 56px;
}

.footer-brand img {
    height: 40px;
    margin-bottom: 20px;
    filter: brightness(0) invert(1);
}

.footer-brand p {
    color: rgba(255, 255, 255, .55);
    font-size: 14px;
    line-height: 1.6;
    max-width: 320px;
}

.footer-col h4 {
    color: var(--white);
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .1em;
    margin-bottom: 20px;
}

.footer-col ul {
    list-style: none;
    display: grid;
    gap: 10px;
}

.footer-col a {
    color: rgba(255, 255, 255, .6);
    font-size: 14px;
    transition: color var(--transition);
}

.footer-col a:hover {
    color: var(--cyan-400);
}

.footer-bottom {
    padding: 24px 0;
    border-top: 1px solid rgba(255, 255, 255, .08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: rgba(255, 255, 255, .45);
    flex-wrap: wrap;
    gap: 16px;
}

.footer-switch {
    color: rgba(255, 255, 255, .55);
    transition: color var(--transition);
    font-size: 12px;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.footer-switch:hover {
    color: var(--cyan-400);
}

/* ==========================================================================
   PRODUCTS PAGE
   ========================================================================== */

.page-header {
    background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-700) 100%);
    color: var(--white);
    padding: 80px 0 64px;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(ellipse at 80% 30%, rgba(0, 181, 226, .2) 0%, transparent 50%);
    pointer-events: none;
}

.page-header .container {
    position: relative;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, .55);
    margin-bottom: 16px;
}

.breadcrumb a {
    transition: color var(--transition);
}

.breadcrumb a:hover {
    color: var(--cyan-400);
}

.breadcrumb .sep {
    opacity: .4;
}

.page-header h1 {
    color: var(--white);
    font-size: clamp(36px, 5vw, 60px);
    margin-bottom: 16px;
}

.page-header p {
    color: rgba(255, 255, 255, .7);
    font-size: 18px;
    max-width: 640px;
}

.catalog-section {
    padding: 64px 0 120px;
    background: var(--gray-50);
}

.category-bar {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 40px;
    padding: 8px;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 999px;
    box-shadow: var(--shadow-sm);
    width: max-content;
    max-width: 100%;
    overflow-x: auto;
}

.cat-btn {
    padding: 10px 20px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: var(--gray-600);
    border-radius: 999px;
    white-space: nowrap;
    transition: all var(--transition);
}

.cat-btn:hover {
    color: var(--navy-900);
}

.cat-btn.active {
    background: var(--navy-900);
    color: var(--white);
}

.product-card.hidden {
    display: none;
}

/* ==========================================================================
   PRODUCT DETAIL PAGE
   ========================================================================== */

.product-detail {
    padding: 80px 0;
    background: var(--white);
}

.product-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.product-detail-image {
    background: linear-gradient(135deg, #FAFCFE 0%, #EDF2F8 100%);
    border-radius: var(--radius-lg);
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    position: relative;
    overflow: hidden;
}

.product-detail-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 50% 60%, rgba(0, 181, 226, .15), transparent 60%);
    pointer-events: none;
}

.product-detail-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 40px;
    position: relative;
    z-index: 1;
    mix-blend-mode: multiply;
}

.product-detail-image svg {
    width: 50%;
    color: var(--navy-700);
    opacity: .3;
    position: relative;
    z-index: 1;
}

.product-detail-image .volume-tag {
    position: absolute;
    top: 24px;
    right: 24px;
    background: var(--navy-900);
    color: var(--white);
    padding: 8px 14px;
    border-radius: 8px;
    font-weight: 700;
    letter-spacing: .08em;
    font-size: 13px;
}

.product-detail-info .product-cat {
    font-size: 12px;
    margin-bottom: 12px;
}

.product-detail-info h1 {
    font-size: clamp(28px, 3.6vw, 42px);
    margin-bottom: 20px;
}

.product-detail-info .lead {
    font-size: 17px;
    color: var(--gray-600);
    margin-bottom: 32px;
    line-height: 1.65;
}

.feature-list {
    list-style: none;
    display: grid;
    gap: 14px;
    margin-bottom: 36px;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 15px;
    color: var(--gray-700);
}

.feature-list li::before {
    content: '';
    flex-shrink: 0;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--cyan-500);
    margin-top: 8px;
}

.spec-table {
    border-top: 1px solid var(--gray-200);
    padding-top: 24px;
    margin-bottom: 36px;
}

.spec-row {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 16px;
    padding: 12px 0;
    border-bottom: 1px solid var(--gray-100);
    font-size: 14px;
}

.spec-row .key {
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: .06em;
    font-size: 12px;
    font-weight: 600;
}

.spec-row .val {
    color: var(--gray-900);
    font-weight: 500;
}

.detail-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

@media (max-width: 1100px) {
    .nav-menu {
        gap: 20px;
    }

    .nav-links {
        gap: 20px;
    }

    .nav-links a {
        font-size: 12px;
        letter-spacing: .03em;
    }

    .nav-cta {
        padding: 9px 14px;
        font-size: 11px;
    }
}

@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .hero-visual {
        max-width: 460px;
        margin: 0 auto;
    }

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

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

    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .about-grid,
    .contact-grid,
    .product-detail-grid,
    .section-head.split {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .savings-band .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .savings-band .savings-cta {
        text-align: center;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }

    /* Switch to hamburger drawer from tablet size — prevents nav-menu wrap */
    .site-nav .container {
        padding-top: 16px;
        padding-bottom: 16px;
        gap: 12px;
    }

    .brand-logo img {
        height: 36px;
    }

    .hamburger {
        display: flex;
        order: 3;
        padding: 6px;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        align-items: stretch;
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--gray-200);
        box-shadow: var(--shadow-md);
        max-height: calc(100vh - 120px);
        overflow-y: auto;
        visibility: hidden;
        opacity: 0;
        transform: translateY(-8px);
        pointer-events: none;
        transition: opacity .25s ease, transform .25s ease, visibility 0s linear .25s;
    }

    .nav-menu.open {
        visibility: visible;
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
        transition: opacity .25s ease, transform .25s ease, visibility 0s linear 0s;
    }

    .nav-links {
        flex-direction: column;
        gap: 16px;
    }

    .nav-links a {
        font-size: 14px;
        letter-spacing: .05em;
    }

    .nav-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 14px;
    }

    .lang-switch {
        align-self: flex-start;
    }

    .nav-cta {
        width: 100%;
        justify-content: center;
        padding: 12px 18px;
        font-size: 13px;
    }
}

@media (max-width: 768px) {
    section {
        padding: 64px 0;
    }

    .container {
        padding: 0 18px;
    }

    .hero {
        padding: 48px 0 64px;
    }

    /* Topbar — more prominent on mobile */
    .topbar {
        font-size: 13px;
    }

    .topbar .container {
        padding-top: 12px;
        padding-bottom: 12px;
        gap: 8px;
        justify-content: center;
    }

    .topbar-tagline {
        display: none;
    }

    .topbar-info {
        gap: 18px;
        width: 100%;
        justify-content: center;
    }

    .topbar-info a {
        font-weight: 500;
    }

    .topbar-info a svg {
        width: 14px;
        height: 14px;
    }

    /* Mobile-specific nav tweaks (drawer already active from 1024px) */
    .brand-logo img {
        height: 32px;
    }

    /* Hero */
    .hero h1 {
        font-size: clamp(34px, 8vw, 48px);
    }

    .hero p.lead {
        font-size: 16px;
    }

    .hero-actions .btn {
        padding: 12px 20px;
        font-size: 13px;
    }

    .hero-stats {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
        padding-top: 28px;
    }

    .hero-stat .num {
        font-size: 26px;
    }

    .hero-stat:nth-child(3) {
        display: none;
    }

    .hero-visual {
        max-width: 100%;
        padding: 24px;
    }

    .hero-saving .figure {
        font-size: clamp(64px, 18vw, 96px);
    }

    /* Trust strip */
    .trust-strip {
        padding: 20px 0;
    }

    .trust-strip .container {
        justify-content: center;
        gap: 14px;
    }

    .trust-item {
        font-size: 12px;
        gap: 8px;
    }

    .trust-item .icon {
        width: 30px;
        height: 30px;
    }

    .trust-item .icon svg {
        width: 14px;
        height: 14px;
    }

    /* Sections */
    .section-title {
        font-size: clamp(26px, 6vw, 36px);
    }

    .section-lead {
        font-size: 15px;
    }

    .section-head {
        margin-bottom: 36px;
    }

    .section-head.split {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .about-grid {
        gap: 36px;
    }

    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }

    .product-body {
        padding: 16px;
    }

    .product-card h3 {
        font-size: 15px;
        min-height: 38px;
    }

    .product-card .product-desc {
        font-size: 12px;
        margin-bottom: 14px;
    }

    .product-cat {
        font-size: 10px;
    }

    .values-grid {
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }

    .value-card {
        padding: 24px 20px;
    }

    .value-card h3 {
        font-size: 17px;
    }

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

    .sector-card {
        min-height: auto;
        padding: 24px;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
        padding-bottom: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .contact-form {
        padding: 24px;
    }

    .contact-item {
        padding: 16px 18px;
        gap: 14px;
    }

    .contact-item .icon {
        width: 38px;
        height: 38px;
    }

    .contact-item .meta .value {
        font-size: 14px;
    }

    .savings-band {
        padding: 56px 0;
    }

    .savings-band h2 {
        font-size: clamp(24px, 6vw, 32px);
    }

    .savings-band p {
        font-size: 15px;
    }

    /* Page header */
    .page-header {
        padding: 56px 0 40px;
    }

    .page-header h1 {
        font-size: clamp(30px, 8vw, 44px);
    }

    .page-header p {
        font-size: 15px;
    }

    .category-bar {
        width: 100%;
        gap: 4px;
        padding: 6px;
    }

    .cat-btn {
        padding: 8px 14px;
        font-size: 12px;
    }

    /* Detail page */
    .product-detail {
        padding: 48px 0;
    }

    .product-detail-image img {
        padding: 24px;
    }

    .product-detail-info h1 {
        font-size: clamp(26px, 6vw, 34px);
    }

    .product-detail-info .lead {
        font-size: 15px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

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

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

    /* Topbar — at very small widths show only phone */
    .topbar-info a:nth-child(2) {
        display: none;
    }

    .topbar-info {
        gap: 0;
        justify-content: flex-start;
    }

    .brand-logo img {
        height: 28px;
    }

    .hero {
        padding: 36px 0 56px;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 12px;
        padding-top: 22px;
    }

    .hero-stat:nth-child(3) {
        display: block;
    }

    .hero-actions {
        flex-direction: column;
        gap: 10px;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .detail-actions {
        flex-direction: column;
    }

    .detail-actions .btn {
        width: 100%;
    }

    .footer-switch {
        font-size: 11px;
    }
}

@media (max-width: 360px) {
    .product-grid {
        grid-template-columns: 1fr;
    }

    .product-card h3 {
        font-size: 16px;
    }
}