/* ========================================
   ROHIT INDUSTRIES – APPLE + INDUSTRIAL
   ======================================== */

:root {
    --primary: #E31E24;
    --primary-deep: #b31217;

    /* --bg-light: #f8f5f5;  */
    --bg-light: #f7f8fa; 
    --bg-section-light: #E6E8EB;
    --bg-light-grey: #f1f3f6;
    --bg-grey: #2B333C;
    --bg-dark: #1C1C1C;
    --bg-darker: #111111;
    --bg-dark-red: #221010;
    --bg-dark-red-bright: #230f0f;
    --bg-dark-deep-red: #181111;    

    --card-dark: #271b1b;

    --border-dark: #392828;
    --border-light: #E5E7EB;

    --text-darker: #111111;
    --text-dark: #0F172A;
    /* --text-light: #4b5563; */
    --text-light: #475569;
    --text-on-dark: #d1d5db;
    --text-muted-dark: #9ca3af;
    --text-on-dark-strong: #f3f4f6;

    --status-active: oklch(0.72 0.17 145);  /* tokenised green — replaces raw #22c55e */

    --elev-0: none;

    /* Subtle surface separation */
    --elev-1:
        0 1px 2px rgba(15, 23, 42, 0.04),
        0 1px 1px rgba(15, 23, 42, 0.03);

    /* Standard card */
    --elev-2:
        0 4px 12px rgba(15, 23, 42, 0.05),
        0 2px 4px rgba(15, 23, 42, 0.04);

    /* Hover / elevated */
    --elev-3:
        0 10px 30px rgba(15, 23, 42, 0.08),
        0 4px 8px rgba(15, 23, 42, 0.06);

    /* Floating panels / modals */
    --elev-4:
        0 20px 60px rgba(15, 23, 42, 0.12),
        0 8px 20px rgba(15, 23, 42, 0.08);

    /* ===== Radius System ===== */

    --radius-0: 0px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;

    --container-sm: 1140px;
    --container-md: 1280px;
    --container-lg: 1440px;
    --container-xl: 1600px;

    /* ===== Spacing Scale (4px system) ===== */

    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    --space-20: 80px;
    --space-24: 96px;
    --space-32: 128px;
    --space-36: 144px;
    --space-40: 160px;
    --space-44: 176px;

    /* ===== Typography Scale ===== */

    --text-xs: 13px;
    --text-sm: 15px;
    --text-base: 17px;
    --text-md: 20px;
    --text-lg: 24px;
    --text-xl: 32px;
    --text-2xl: 40px;
    --text-3xl: 52px;
    --text-4xl: 64px;
}

/* ===== SKIP LINK ===== */

.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    background: var(--primary);
    color: #fff;
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-sm);
    font-weight: 600;
    letter-spacing: 0.5px;
    text-decoration: none;
    z-index: 10000;
    transition: top 0.15s ease;
}

.skip-link:focus {
    top: var(--space-4);
}

/* ===== RESET ===== */

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

html {
    scroll-behavior: smooth;
    overflow-x: clip; /* clip not hidden — hidden breaks position:sticky on children */
}

body {
    font-family: "IBM Plex Sans", sans-serif;
    background: white;
    font-size: var(--text-base);
    color: var(--text-dark);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    -moz-osx-font-smoothing: grayscale;
    margin: 0;
}

/* ===== CONTAINER ===== */

.container {
    width: 90%;
    max-width: var(--container-md);
    margin: 0 auto;
}

.hero .container {
    max-width: 1200px;
}

.hero .text-container {
    max-width: 800px;
}

/* ===== SECTION SYSTEM ===== */

.section {
    padding: var(--space-32) 0;
}

.section-light {
    background: var(--bg-section-light);
}

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

.section-dark p {
    color: var(--text-on-dark);
}

.section-heading {
    max-width: 720px;
    font-size: var(--text-2xl);
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: var(--space-6);
}

/* ===== TYPOGRAPHY ===== */

h1 {
    font-size: clamp(36px, 4vw, 64px);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -1px;
    margin-bottom: var(--space-6);
}

h2 {
    font-size: clamp(28px, 2.5vw, 40px);
    line-height: 1.15;
    font-weight: 600;
    margin-bottom: var(--space-5);
}

h3 {
    font-size: clamp(20px, 1.8vw, 24px);
    font-weight: 500;
    margin-bottom: var(--space-4);
}

p {
    font-size: clamp(16px, 1.1vw, 18px);
    color: var(--text-light);
    margin-bottom: var(--space-5);
}

p + p {
    margin-top: var(--space-4);
}

ul {
    padding-left: var(--space-6);
}

li {
    margin-bottom: var(--space-3);
}

.text-small {
    font-size: var(--text-sm);
}

.text-muted {
    color: var(--text-light);
}

.spec {
    font-family: "IBM Plex Sans", sans-serif;
    font-size: var(--text-sm);
    letter-spacing: 0.3px;
}

.text-container {
    max-width: 720px;
}

.label {
    font-size: var(--text-xs);
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--primary);
}
/* ===== HERO ===== */

.hero {
    background: linear-gradient(
        to bottom,
        var(--bg-dark),
        var(--bg-dark-red)
    );
    color: white;
    text-align: center;
    padding: var(--space-32) 0;
}

.hero h1 {
    font-size: clamp(42px, 5vw, 72px);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -1.2px;
    max-width: 900px;
    margin: 0 auto var(--space-6);
}

.hero p {
    font-size: var(--text-md);
    line-height: 1.7;
    max-width: 650px;
    margin: 0 auto;
    /* color: var(--text-light); */
    color: var(--text-on-dark);
    font-weight: 400;
}

.highlight {
    color: var(--primary);
}

/* ===== BUTTONS ===== */

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 3px;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.2s ease-out, color 0.2s ease-out, border-color 0.2s ease-out, transform 0.18s ease-out, box-shadow 0.2s ease-out;
    text-transform: uppercase;
    letter-spacing: 0.7px;
    font-size: 14px;
}

/* Footer logo override */
.footer .logo {
    color: var(--primary);
    font-size: var(--text-xl);
    font-weight: 400;
}

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

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

.btn-primary:active {
    transform: translateY(0) scale(0.97);
    box-shadow: none;
}

.btn-outline {
    border: 1px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--bg-section-light);
    color: var(--primary-deep);
}

.btn-outline:active {
    transform: scale(0.97);
}

a:focus,
button:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ── Border Glow — exact ReactBits port, red-themed ── */

.border-glow-card {
    --edge-proximity:    0;
    --cursor-angle:      45deg;
    --edge-sensitivity:  22;
    --color-sensitivity: calc(var(--edge-sensitivity) + 20);
    --border-radius:     3px;
    --glow-padding:      22px;
    --cone-spread:       22;
    --card-bg:           #111111;
    --fill-opacity:      0.35;

    /* red mesh gradient colours */
    --gradient-one:   radial-gradient(at 80% 55%, hsla(0,   100%, 60%, 1) 0px, transparent 50%);
    --gradient-two:   radial-gradient(at 69% 34%, hsla(15,  100%, 55%, 1) 0px, transparent 50%);
    --gradient-three: radial-gradient(at  8%  6%, hsla(350,  90%, 50%, 1) 0px, transparent 50%);
    --gradient-four:  radial-gradient(at 41% 38%, hsla(5,   100%, 65%, 1) 0px, transparent 50%);
    --gradient-five:  radial-gradient(at 86% 85%, hsla(355,  80%, 45%, 1) 0px, transparent 50%);
    --gradient-six:   radial-gradient(at 82% 18%, hsla(10,  100%, 60%, 1) 0px, transparent 50%);
    --gradient-seven: radial-gradient(at 51%  4%, hsla(0,    95%, 58%, 1) 0px, transparent 50%);
    --gradient-base:  linear-gradient(#E31E24 0 100%);

    /* red glow colour at various opacities */
    --glow-color:    hsl(0deg 85% 55% / 100%);
    --glow-color-60: hsl(0deg 85% 55% /  60%);
    --glow-color-50: hsl(0deg 85% 55% /  50%);
    --glow-color-40: hsl(0deg 85% 55% /  40%);
    --glow-color-30: hsl(0deg 85% 55% /  30%);
    --glow-color-20: hsl(0deg 85% 55% /  20%);
    --glow-color-10: hsl(0deg 85% 55% /  10%);

    position:      relative;
    border-radius: var(--border-radius);
    isolation:     isolate;
    transform:     translate3d(0, 0, 0.01px);
    display:       inline-grid;
    border:        1px solid rgb(255 255 255 / 12%);
    background:    var(--card-bg);
}

/* ── btn-glow-card sizing overrides ── */
.btn-glow-card {
    --glow-padding: 18px;
    --cone-spread:  20;
}

/* inner content wrapper */
.border-glow-inner {
    display:   flex;
    position:  relative;
    z-index:   1;
}

/* shared pseudo-element base */
.border-glow-card::before,
.border-glow-card::after,
.border-glow-card > .edge-light {
    content:       "";
    position:      absolute;
    inset:         0;
    border-radius: inherit;
    transition:    opacity 0.25s ease-out;
    z-index:       -1;
}

/* fade out when cursor leaves */
.border-glow-card:not(:hover)::before,
.border-glow-card:not(:hover)::after,
.border-glow-card:not(:hover) > .edge-light {
    opacity:    0;
    transition: opacity 0.75s ease-in-out;
}

/* ── ::before — coloured mesh border ring ── */
.border-glow-card::before {
    border: 1px solid transparent;
    background:
        linear-gradient(var(--card-bg) 0 100%) padding-box,
        linear-gradient(rgb(255 255 255 / 0%) 0% 100%) border-box,
        var(--gradient-one)   border-box,
        var(--gradient-two)   border-box,
        var(--gradient-three) border-box,
        var(--gradient-four)  border-box,
        var(--gradient-five)  border-box,
        var(--gradient-six)   border-box,
        var(--gradient-seven) border-box,
        var(--gradient-base)  border-box;

    opacity: calc(
        (var(--edge-proximity) - var(--color-sensitivity)) /
        (100 - var(--color-sensitivity))
    );

    mask-image: conic-gradient(
        from var(--cursor-angle) at center,
        black                                    calc(var(--cone-spread) * 1%),
        transparent                              calc((var(--cone-spread) + 15) * 1%),
        transparent                              calc((100 - var(--cone-spread) - 15) * 1%),
        black                                    calc((100 - var(--cone-spread)) * 1%)
    );
}

/* ── ::after — soft fill near edges ── */
.border-glow-card::after {
    border: 1px solid transparent;
    background:
        var(--gradient-one)   padding-box,
        var(--gradient-two)   padding-box,
        var(--gradient-three) padding-box,
        var(--gradient-four)  padding-box,
        var(--gradient-five)  padding-box,
        var(--gradient-six)   padding-box,
        var(--gradient-seven) padding-box,
        var(--gradient-base)  padding-box;

    mask-image:
        linear-gradient(to bottom, black, black),
        radial-gradient(ellipse at 50% 50%, black 40%, transparent 65%),
        radial-gradient(ellipse at 66% 66%, black 5%, transparent 40%),
        radial-gradient(ellipse at 33% 33%, black 5%, transparent 40%),
        radial-gradient(ellipse at 66% 33%, black 5%, transparent 40%),
        radial-gradient(ellipse at 33% 66%, black 5%, transparent 40%),
        conic-gradient(from var(--cursor-angle) at center, transparent 5%, black 15%, black 85%, transparent 95%);

    mask-composite:  subtract, add, add, add, add, add;
    opacity:         calc(
        var(--fill-opacity) *
        (var(--edge-proximity) - var(--color-sensitivity)) /
        (100 - var(--color-sensitivity))
    );
    mix-blend-mode:  soft-light;
}

/* ── .edge-light — outer glow halo ── */
.border-glow-card > .edge-light {
    inset:          calc(var(--glow-padding) * -1);
    pointer-events: none;
    z-index:        1;

    mask-image: conic-gradient(
        from var(--cursor-angle) at center,
        black 2.5%, transparent 10%, transparent 90%, black 97.5%
    );

    opacity: calc(
        (var(--edge-proximity) - var(--edge-sensitivity)) /
        (100 - var(--edge-sensitivity))
    );
    mix-blend-mode: plus-lighter;
}

.border-glow-card > .edge-light::before {
    content:       "";
    position:      absolute;
    inset:         var(--glow-padding);
    border-radius: inherit;
    box-shadow:
        inset 0 0 0  1px var(--glow-color),
        inset 0 0 1px  0  var(--glow-color-60),
        inset 0 0 3px  0  var(--glow-color-50),
        inset 0 0 6px  0  var(--glow-color-40),
        inset 0 0 15px 0  var(--glow-color-30),
        inset 0 0 25px 2px var(--glow-color-20),
        inset 0 0 50px 2px var(--glow-color-10),
              0 0 1px  0  var(--glow-color-60),
              0 0 3px  0  var(--glow-color-50),
              0 0 6px  0  var(--glow-color-40),
              0 0 15px 0  var(--glow-color-30),
              0 0 25px 2px var(--glow-color-20),
              0 0 50px 2px var(--glow-color-10);
}

/* ── btn-glow inner element ── */
.btn-glow {
    display:    block;
    background: #111111;
    color:      #ffffff;
    border:     none;
}

.btn-glow:hover,
.btn-glow:focus {
    background: #111111;
    color:      #ffffff;
    transform:  none;
    box-shadow: none;
}

.btn-glow:active {
    transform: scale(0.97);
}

/* ── Magnetic button wrapper ── */
.magnet-wrap {
    display: inline-block;
    width: fit-content;   /* never stretch wider than the button — keeps center calc accurate */
    align-self: flex-start; /* prevent flex-column stretching */
    padding: 18px;   /* extra hit-area pulls the cursor in before it hits the button */
    margin: -18px;   /* cancel the padding so layout stays identical */
    cursor: pointer;
}

/* ===== PREMIUM CARDS ===== */

.card {
    background: #ffffff;
    padding: var(--space-8);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    box-shadow: var(--elev-1);
    transition:
        box-shadow 0.25s ease-out,
        transform 0.2s ease-out,
        border-color 0.25s ease-out;
}

.card:hover {
    box-shadow: var(--elev-3);
    transform: translateY(-4px);
}

.card:active {
    transform: translateY(-1px);
    box-shadow: var(--elev-2);
}

.card-strong {
    background: #ffffff;
    padding: var(--space-10);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    box-shadow: var(--elev-2);
}

.card-dark {
    background: var(--bg-dark);
    padding: var(--space-8);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-dark);
    box-shadow: var(--elev-2);
    color: var(--text-on-dark);
}

.card-dark p {
    color: var(--text-on-dark);
}


::selection {
    background: var(--primary);
    color: white;
}
/* ===== GRID ===== */

.grid {
    display: grid;
    gap: var(--space-10);
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

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

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

.metrics-grid {
    display: grid;
    gap: var(--space-12);
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    text-align: center;
}
/* ===== NAVIGATION ===== */

.site-header {
    background: white;
    border-bottom: 1px solid var(--border-light);
    padding: var(--space-6) 0;
    position: sticky;
    top: 0;
    z-index: 999;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.site-header.nav-hidden {
    transform: translateY(-100%);
}

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

/* nav-links is a flex row on desktop */
.nav-links {
    display: flex;
    align-items: center;
}

.nav a {
    font-size: var(--text-sm);
    font-weight: 600;
    letter-spacing: 0.4px;
    color: var(--text-dark);
    text-decoration: none;
    margin-left: var(--space-8);
    position: relative;
    text-transform: uppercase;
}

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

.nav a.active::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -10px;
    width: 100%;
    height: 3px;
    background: var(--primary);
}

.logo {
    font-size: var(--text-lg);
    font-weight: 700;
    letter-spacing: -0.3px;
    color: var(--text-dark);
}

/* ===== FOOTER ===== */

/* ===== FOOTER REFINED ===== */

.footer {
    background: var(--bg-darker);
    color: var(--text-on-dark);
    padding: var(--space-32) 0;
}

.footer-grid {
    display: grid;
    gap: var(--space-12);
    grid-template-columns: minmax(260px, 320px) auto auto minmax(200px, 260px);
    justify-content: space-between;
    align-items: start;
}

@media (max-width: 767px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

.footer-title {
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-4);
    color: white;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: var(--space-3);
    font-size: var(--text-sm);
}

.footer-links a {
    color: var(--text-on-dark);
    text-decoration: none;
}

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

.footer-links--2col {
    columns: 2;
    column-gap: var(--space-6);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    margin-top: var(--space-16);
    padding-top: var(--space-8);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    font-size: var(--text-xs);
}

.footer-legal {
    display: flex;
    gap: var(--space-6);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
}

.footer-logo-icon {
    width: 24px;
    height: 24px;
    color: var(--primary);
    flex-shrink: 0;
}

.footer-desc {
    font-size: var(--text-base);
    color: var(--text-muted-dark);
    line-height: 1.65;
    margin-bottom: var(--space-6);
}

.footer-social {
    display: flex;
    gap: var(--space-4);
}

.footer-social-link {
    display: flex;
    align-items: center;
    color: var(--text-muted-dark);
    transition: color 0.2s ease;
}

.footer-social-link:hover {
    color: white;
}

.footer-social-icon {
    width: 20px;
    height: 20px;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
}

.footer-contact-item .material-symbols-outlined {
    font-size: 18px;
    color: var(--primary);
    margin-top: 1px;
    flex-shrink: 0;
}
/* ===== SEPARATOR ===== */

.separator {
    height: 1px;
    background: var(--border-light);
    margin: var(--space-16) 0;
}

.separator-accent {
    width: 60px;
    height: 3px;
    background: var(--primary);
    margin-top: var(--space-4);
}

/* ===== IMAGE ===== */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

@media (max-width: 992px) {
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: clamp(36px, 4vw, 64px);
    }

    h2 {
        font-size: 30px;
    }
}



@media (min-width: 1440px) {
    .container {
        max-width: var(--container-lg);
    }
}

@media (min-width: 1600px) {
    .section {
        padding: 160px 0;
    }
}

@media (min-width: 1800px) {
    .container {
        max-width: var(--container-xl);
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
    }
}