/* ============================================
   WCUK Online - Brand Landing Page
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    /* Core colours */
    --color-bg: #0a0a0a;
    --color-bg-alt: #111111;
    --color-card: #161616;
    --color-border: #2a2a2a;
    --color-text: #d4d4d4;
    --color-text-muted: #777777;
    --color-white: #ffffff;
    --color-primary: #29b6e8;

    /* Brand colours */
    --color-wcuk: #0099dd;
    --color-alphacool: #3b82f6;
    --color-hwlabs: #e63946;
    --color-liquidcool: #29b6e8;
    --color-xspc: #8b5cf6;
    --color-cablemodders: #f59e0b;
    --color-barrow: #10b981;

    /* Typography */
    --font: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Layout */
    --container-max: 1200px;
    --section-padding: 120px;
    --transition: 0.3s ease;
}

/* Light theme overrides — brand colours (--color-wcuk etc.) stay constant */
[data-theme="light"] {
    --color-bg: #ffffff;
    --color-bg-alt: #f4f4f4;
    --color-card: #fafafa;
    --color-border: #e0e0e0;
    --color-text: #2a2a2a;
    --color-text-muted: #6b6b6b;
    --color-white: #1a1a1a;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font);
    font-weight: 400;
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

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

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

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

/* --- Section Titles --- */
.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-white);
    text-align: center;
    margin-bottom: 16px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    margin: 16px auto 0;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--color-wcuk), var(--color-liquidcool), var(--color-xspc), var(--color-cablemodders));
}

.section-title--left {
    text-align: left;
}

.section-title--left::after {
    margin-left: 0;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 60px;
    font-size: 1.05rem;
}

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 14px 36px;
    font-family: var(--font);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 6px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: 0.02em;
}

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

.btn--primary:hover {
    background: transparent;
    color: var(--color-primary);
    box-shadow: 0 0 30px rgba(41, 182, 232, 0.25);
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 24px 0;
    transition: all var(--transition);
}

.nav--scrolled {
    padding: 12px 0;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

[data-theme="light"] .nav--scrolled {
    background: rgba(255, 255, 255, 0.85);
}

/* Hero vignette: flip dark fade to light in light mode */
[data-theme="light"] .hero__overlay {
    background: radial-gradient(ellipse at 50% 50%, transparent 40%, rgba(255, 255, 255, 0.5) 100%);
}

/* Brand marquee: pills and logos readable in light mode */
[data-theme="light"] .marquee__pill {
    background: rgba(0, 0, 0, 0.04);
    border-color: rgba(0, 0, 0, 0.08);
}
[data-theme="light"] .marquee__pill:hover {
    background: rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.15);
}
[data-theme="light"] .marquee__pill img {
    filter: brightness(0);
}

/* Theme toggle button */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    margin-left: 24px;
    padding: 0;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: color var(--transition), border-color var(--transition), transform var(--transition);
}

.theme-toggle:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    transform: rotate(15deg);
}

.theme-toggle__icon {
    width: 18px;
    height: 18px;
}

[data-theme="dark"] .theme-toggle__icon--moon,
[data-theme="light"] .theme-toggle__icon--sun {
    display: none;
}

.nav__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
}

.nav__logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.08em;
    transition: color var(--transition);
}

.nav__logo span {
    font-weight: 300;
    color: var(--color-primary);
}

.nav__menu {
    list-style: none;
    display: flex;
    gap: 40px;
    margin-left: auto;
}

.nav__menu a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition);
    letter-spacing: 0.02em;
}

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

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    border-radius: 2px;
    transition: all var(--transition);
}

.nav__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--color-bg);
    isolation: isolate;
}

#heroCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* Hardened blob styles — third-party scripts (Senja) can leak global `div` rules */
.hero__blob {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    z-index: 1;
    transition: transform 0.1s linear;
    will-change: transform;
    background-color: transparent !important;
    background-image: radial-gradient(circle, var(--blob-colour) 0%, var(--blob-clear) 70%) !important;
    background-repeat: no-repeat;
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2;
    background: radial-gradient(ellipse at 50% 50%, transparent 40%, rgba(10, 10, 10, 0.5) 100%);
    pointer-events: none;
}

.hero__content {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: 0 24px;
}

.hero__est {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--color-text-muted);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.hero__title {
    font-size: clamp(3rem, 10vw, 6rem);
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.06em;
    line-height: 1.1;
    margin-bottom: 16px;
}

.hero__title span {
    font-weight: 300;
    color: var(--color-primary);
}

/* Hardened against third-party style injection (Senja platform.js leaks global span rules) */
.accent-word {
    color: var(--color-primary) !important;
}

.hero__tagline {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    font-weight: 300;
    color: var(--color-text);
    margin-bottom: 8px;
}

.hero__subtitle {
    font-size: clamp(0.9rem, 1.8vw, 1.05rem);
    color: var(--color-text-muted);
    margin-bottom: 40px;
}

/* --- Hero Scroll Indicator --- */
.hero__scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.hero__scroll span {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.hero__scroll-line {
    width: 1px;
    height: 40px;
    background: var(--color-text-muted);
    transform-origin: top;
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0% { opacity: 0; transform: scaleY(0); }
    50% { opacity: 1; transform: scaleY(1); }
    100% { opacity: 0; transform: scaleY(0); }
}

/* --- Brand Logo Marquee --- */
.marquee {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    padding: 24px 0;
    overflow: hidden;
}

.marquee__track {
    display: flex;
    width: max-content;
    animation: marqueeScroll 25s linear infinite;
}

.marquee:hover .marquee__track {
    animation-play-state: paused;
}

@keyframes marqueeScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(var(--marquee-shift, -50%)); }
}

.marquee__content {
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 0 16px;
}

.marquee__pill {
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 12px 28px;
    min-width: 170px;
    height: 64px;
    transition: transform var(--transition), background var(--transition), border-color var(--transition);
    flex-shrink: 0;
}

.marquee__pill:hover {
    transform: scale(1.05);
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.2);
}

.marquee__pill img {
    filter: brightness(0) invert(1);
}

.marquee__pill img {
    max-height: 32px;
    max-width: 130px;
    width: auto;
    height: auto;
    object-fit: contain;
}

/* --- Brands Section --- */
.brands {
    padding: var(--section-padding) 0;
    background: var(--color-bg);
}

.brands__grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 24px;
}

/* Top row: 3 tiles (WatercoolingUK, Alphacool, Barrow) */
.brand-card {
    grid-column: span 4;
}

/* Bottom row: 4 tiles (alphabetical) */
.brand-card:nth-child(n+4) {
    grid-column: span 3;
}

/* --- Brand Card --- */
.brand-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 32px;
    overflow: hidden;
    transition: all 0.4s ease;
    cursor: pointer;
}

.brand-card__accent {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--brand-color, var(--color-primary));
    opacity: 0;
    transition: opacity 0.4s ease;
}

.brand-card:hover {
    transform: translateY(-6px);
    border-color: var(--brand-color, var(--color-primary));
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 40px var(--brand-glow, rgba(41, 182, 232, 0.1));
}

.brand-card:hover .brand-card__accent {
    opacity: 1;
}

.brand-card:hover .brand-card__icon {
    background: var(--brand-color, var(--color-primary));
    color: var(--color-bg);
}

.brand-card:hover .brand-card__cta .arrow {
    transform: translateX(4px);
}

/* Per-brand colours */
.brand-card[data-brand="wcuk"] {
    --brand-color: var(--color-wcuk);
    --brand-glow: rgba(0, 153, 221, 0.15);
}
.brand-card[data-brand="alphacool"] {
    --brand-color: var(--color-alphacool);
    --brand-glow: rgba(59, 130, 246, 0.15);
}
.brand-card[data-brand="hwlabs"] {
    --brand-color: var(--color-hwlabs);
    --brand-glow: rgba(230, 57, 70, 0.15);
}
.brand-card[data-brand="liquidcool"] {
    --brand-color: var(--color-liquidcool);
    --brand-glow: rgba(41, 182, 232, 0.15);
}
.brand-card[data-brand="xspc"] {
    --brand-color: var(--color-xspc);
    --brand-glow: rgba(139, 92, 246, 0.15);
}
.brand-card[data-brand="cablemodders"] {
    --brand-color: var(--color-cablemodders);
    --brand-glow: rgba(245, 158, 11, 0.15);
}
.brand-card[data-brand="barrow"] {
    --brand-color: var(--color-barrow);
    --brand-glow: rgba(16, 185, 129, 0.15);
}

.brand-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.brand-card__icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background: var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-white);
    transition: all var(--transition);
}

.brand-card__tag {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text-muted);
    background: rgba(255, 255, 255, 0.05);
    padding: 4px 12px;
    border-radius: 20px;
    letter-spacing: 0.02em;
}

.brand-card__tag--flagship {
    color: #1a1200;
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    font-weight: 600;
    box-shadow: 0 0 16px rgba(251, 191, 36, 0.3);
}

.brand-card__tag--own {
    color: #ffffff;
    background: #10b981;
    font-weight: 600;
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.25);
}

.brand-card__tag--distributed {
    color: #ffffff;
    background: #8b5cf6;
    font-weight: 600;
    box-shadow: 0 0 12px rgba(139, 92, 246, 0.25);
}

.brand-card__name {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 12px;
}

.brand-card__desc {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    flex-grow: 1;
    margin-bottom: 24px;
}

.brand-card__cta {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--brand-color, var(--color-primary));
    display: flex;
    align-items: center;
    gap: 6px;
}

.brand-card__cta .arrow {
    display: inline-block;
    transition: transform var(--transition);
}

/* --- About Section --- */
.about {
    padding: var(--section-padding) 0;
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.about__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: start;
}

.about__content p {
    margin-bottom: 20px;
    color: var(--color-text);
}

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

.about__stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.stat {
    text-align: center;
    padding: 28px 16px;
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    transition: border-color var(--transition);
}

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

.stat__number {
    display: block;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.stat__label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* --- Footer --- */
.footer {
    padding: 40px 0;
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
}

.footer__content {
    text-align: center;
}

.footer__content p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.footer__address {
    font-size: 0.8rem !important;
}

/* --- Scroll Animations --- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

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

    .about__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about__stats {
        grid-template-columns: repeat(4, 1fr);
    }

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

    .brand-card,
    .brand-card:nth-child(n+4) {
        grid-column: span 1;
    }
}

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

    /* Mobile nav */
    .nav__toggle {
        display: flex;
    }

    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 32px;
        margin-left: 0;
        transition: right 0.4s ease;
        border-left: 1px solid var(--color-border);
    }

    [data-theme="light"] .nav__menu {
        background: rgba(255, 255, 255, 0.98);
    }

    .theme-toggle {
        margin-left: auto;
        margin-right: 12px;
    }

    .nav__menu.open {
        right: 0;
    }

    .nav__menu a {
        font-size: 1.1rem;
    }

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

    .brand-card,
    .brand-card:nth-child(n+4) {
        grid-column: span 1;
    }

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

    .hero__scroll {
        display: none;
    }

    .marquee__pill {
        min-width: 150px;
        padding: 10px 24px;
        height: 56px;
    }

    .marquee__pill img {
        max-height: 28px;
        max-width: 110px;
    }
}

@media (max-width: 480px) {
    .hero__title {
        font-size: 2.5rem;
    }

    .brand-card {
        padding: 24px;
    }

    .marquee__pill {
        min-width: 130px;
        padding: 8px 20px;
        height: 48px;
    }

    .marquee__pill img {
        max-height: 24px;
        max-width: 90px;
    }
}