site.css

/*
 * DCS Site Theme - Marketing Layer
 * Ocean (H=220) default with Crimson, Stone, Forest, Sunset schemes
 * Copyright © 2026 Mark Constable <mc@dcs.spa> (MIT License)
 */

/* ============================================
   LAYER DECLARATION
   Must cascade after base.css layers
   ============================================ */

@layer site-tokens, site-components, site-utilities;

/* ============================================
   SITE TOKENS - Extended for Marketing
   ============================================ */

@layer site-tokens {
    :root {
        /* Scale tokens (spacing/type/transitions/fonts/container-xl) now live in the
           canonical base.css @layer tokens. site.css overrides a token only where this
           site genuinely differs; below is just the per-site marketing set. */

        /* Content-width column — Narrow/Normal/Wide drive this as a fraction of the
           VIEWPORT (screen) width: narrow 50vw, normal 75vw, wide = fill. Each section
           caps at it (centred) and, living inside the sidebar-offset main, is clamped to
           the area between the pinned sidebars — so narrow is always 50% of the screen,
           while normal/wide fill the available area when the sidebars leave less. */
        --content-max: 75vw;   /* normal */

        /* Marketing tokens (per-site: hero image path is site-relative) */
        --hero-bg: url('Server_Room_Dark.webp');
        --particle-opacity: 0.3;
    }

    /* ============================================
       OCEAN (CYAN-BLUE) - Default Theme (H=220)
       ============================================ */

    /* Light Theme (Ocean - Default) */
    :root {
        /* H=220 (cyan-blue) */
        --bg-primary:   oklch(98% 0.008 220);
        --bg-secondary: oklch(96% 0.012 220);
        --bg-tertiary:  oklch(92% 0.018 220);
        --fg-primary:   oklch(25% 0.06 220);
        --fg-secondary: oklch(40% 0.08 220);
        --fg-muted:     oklch(50% 0.06 220);
        --accent:       oklch(50% 0.12 220);
        --accent-hover: oklch(45% 0.14 220);
        --accent-fg:    oklch(98% 0.01 220);
        --accent-subtle:oklch(92% 0.025 220);
        --accent-glow:  oklch(50% 0.12 220 / 0.3);
        /* Over the dark hero image, adopt this scheme's dark-mode accent — see .hero-bg */
        --accent-on-image:       oklch(75% 0.12 220);
        --accent-on-image-hover: oklch(85% 0.1 220);
        --accent-on-image-fg:    oklch(15% 0.04 220);
        --accent-on-image-glow:  oklch(75% 0.12 220 / 0.4);
        --border:       oklch(85% 0.02 220);
        --border-muted: oklch(90% 0.015 220);
        /* Semantic */
        --success:      oklch(45% 0.15 145);
        /* 52%, not 55%: --danger is also read as text on --bg-tertiary (92%) */
        --danger:       oklch(52% 0.2 25);
        --warning:      oklch(70% 0.15 85);
        /* Glass */
        --glass:        oklch(98% 0.008 220);
        --glass-border: oklch(85% 0.02 220 / 0.5);
        --nav-scrolled-bg: oklch(100% 0 0 / 0.95);
    }

    /* High-contrast: hard border (a11y). In the colour layer so it wins over the
       --border default above when the user opts in. */
    @media (prefers-contrast: more) {
        :root { --border: currentColor; }
    }

    /* Dark Theme (System Preference) */
    @media (prefers-color-scheme: dark) {
        :root:not(.light) {
            --bg-primary:   oklch(12% 0.015 220);
            --bg-secondary: oklch(16% 0.02 220);
            --bg-tertiary:  oklch(22% 0.025 220);
            --fg-primary:   oklch(95% 0.02 220);
            --fg-secondary: oklch(75% 0.05 220);
            --fg-muted:     oklch(61% 0.04 220);
            --accent:       oklch(75% 0.12 220);
            --accent-hover: oklch(85% 0.1 220);
            --accent-fg:    oklch(15% 0.04 220);
            --accent-subtle:oklch(25% 0.04 220);
            --accent-glow:  oklch(75% 0.12 220 / 0.4);
            /* Already a dark-ground accent; the image needs no substitution */
            --accent-on-image:       oklch(75% 0.12 220);
            --accent-on-image-hover: oklch(85% 0.1 220);
            --accent-on-image-fg:    oklch(15% 0.04 220);
            --accent-on-image-glow:  oklch(75% 0.12 220 / 0.4);
            --border:       oklch(30% 0.03 220);
            --border-muted: oklch(22% 0.02 220);
            --success:      oklch(70% 0.15 145);
            --danger:       oklch(70% 0.18 25);
            --warning:      oklch(80% 0.15 85);
            --glass:        oklch(16% 0.02 220 / 0.85);
            --glass-border: oklch(30% 0.03 220 / 0.5);
            --nav-scrolled-bg: oklch(12% 0.015 220 / 0.9);
            --particle-opacity: 0.3;
            --shadow-sm: 0 1px 3px rgb(0 0 0 / 0.4), 0 1px 2px -1px rgb(0 0 0 / 0.4);
            --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.4);
            --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.4);
        }
    }

    /* Dark Theme (Toggle Override) */
    html.dark {
        --bg-primary:   oklch(12% 0.015 220);
        --bg-secondary: oklch(16% 0.02 220);
        --bg-tertiary:  oklch(22% 0.025 220);
        --fg-primary:   oklch(95% 0.02 220);
        --fg-secondary: oklch(75% 0.05 220);
        --fg-muted:     oklch(61% 0.04 220);
        --accent:       oklch(75% 0.12 220);
        --accent-hover: oklch(85% 0.1 220);
        --accent-fg:    oklch(15% 0.04 220);
        --accent-subtle:oklch(25% 0.04 220);
        --accent-glow:  oklch(75% 0.12 220 / 0.4);
        /* Already a dark-ground accent; the image needs no substitution */
        --accent-on-image:       oklch(75% 0.12 220);
        --accent-on-image-hover: oklch(85% 0.1 220);
        --accent-on-image-fg:    oklch(15% 0.04 220);
        --accent-on-image-glow:  oklch(75% 0.12 220 / 0.4);
        --border:       oklch(30% 0.03 220);
        --border-muted: oklch(22% 0.02 220);
        --success:      oklch(70% 0.15 145);
        --danger:       oklch(70% 0.18 25);
        --warning:      oklch(80% 0.15 85);
        --glass:        oklch(16% 0.02 220 / 0.85);
        --glass-border: oklch(30% 0.03 220 / 0.5);
        --nav-scrolled-bg: oklch(12% 0.015 220 / 0.9);
        --particle-opacity: 0.3;
        --shadow-sm: 0 1px 3px rgb(0 0 0 / 0.4), 0 1px 2px -1px rgb(0 0 0 / 0.4);
        --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.4);
        --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.4);
    }

    /* Light Theme (Toggle Override) */
    html.light {
        --bg-primary:   oklch(98% 0.008 220);
        --bg-secondary: oklch(96% 0.012 220);
        --bg-tertiary:  oklch(92% 0.018 220);
        --fg-primary:   oklch(25% 0.06 220);
        --fg-secondary: oklch(40% 0.08 220);
        --fg-muted:     oklch(50% 0.06 220);
        --accent:       oklch(50% 0.12 220);
        --accent-hover: oklch(45% 0.14 220);
        --accent-fg:    oklch(98% 0.01 220);
        --accent-subtle:oklch(92% 0.025 220);
        --accent-glow:  oklch(50% 0.12 220 / 0.3);
        /* Over the dark hero image, adopt this scheme's dark-mode accent — see .hero-bg */
        --accent-on-image:       oklch(75% 0.12 220);
        --accent-on-image-hover: oklch(85% 0.1 220);
        --accent-on-image-fg:    oklch(15% 0.04 220);
        --accent-on-image-glow:  oklch(75% 0.12 220 / 0.4);
        --border:       oklch(85% 0.02 220);
        --border-muted: oklch(90% 0.015 220);
        --glass:        oklch(98% 0.008 220);
        --glass-border: oklch(85% 0.02 220 / 0.5);
        --nav-scrolled-bg: oklch(100% 0 0 / 0.95);
        --particle-opacity: 0.15;
    }

    /* Content-width toggle (Appearance panel): --content-max is a fraction of the
       VIEWPORT width — narrow 50vw, normal 75vw, wide fill — so narrow is 50% of the
       screen regardless of sidebar width. Each section caps at it; clamped to the area
       between the pinned sidebars. Only applies in the >=960px pinned layout. */
    html.narrow { --content-max: 50vw; }
    html.wide   { --content-max: none; }

    /* ============================================
       COLOR SCHEMES - Crimson, Stone, Forest, Sunset
       ============================================ */

    /* Crimson (H=25 red) */
    .scheme-crimson:not(.dark) {
        --bg-primary:   oklch(98% 0.008 25);
        --bg-secondary: oklch(96% 0.012 25);
        --bg-tertiary:  oklch(92% 0.018 25);
        --fg-primary:   oklch(25% 0.04 25);
        --fg-secondary: oklch(40% 0.06 25);
        --fg-muted:     oklch(50% 0.04 25);
        --accent:       oklch(47% 0.2 25);
        --accent-hover: oklch(42% 0.22 25);
        --accent-fg:    oklch(98% 0.01 25);
        --accent-subtle:oklch(92% 0.04 25);
        --accent-glow:  oklch(47% 0.2 25 / 0.3);
        /* Over the dark hero image, adopt this scheme's dark-mode accent — see .hero-bg */
        --accent-on-image:       oklch(63% 0.23 25);
        --accent-on-image-hover: oklch(70% 0.25 25);
        --accent-on-image-fg:    oklch(15% 0.04 25);
        --accent-on-image-glow:  oklch(63% 0.23 25 / 0.4);
        --border:       oklch(85% 0.02 25);
        --border-muted: oklch(90% 0.015 25);
        --glass:        oklch(98% 0.008 25);
        --glass-border: oklch(85% 0.02 25 / 0.5);
        --nav-scrolled-bg: oklch(98% 0.008 25 / 0.9);
    }
    .scheme-crimson.dark {
        --bg-primary:   oklch(10% 0.015 25);
        --bg-secondary: oklch(14% 0.02 25);
        --bg-tertiary:  oklch(20% 0.025 25);
        --fg-primary:   oklch(95% 0.02 25);
        --fg-secondary: oklch(75% 0.04 25);
        --fg-muted:     oklch(61% 0.03 25);
        /* Crimson dark is the only dark scheme authored with a LIGHT --accent-fg.
           No lightness exists at which a mid crimson both reads as link text on
           bg1-3 and hosts a 98%-L label, so the label flips dark and the accent
           lifts to clear the backgrounds. */
        --accent:       oklch(63% 0.23 25);
        --accent-hover: oklch(70% 0.25 25);
        --accent-fg:    oklch(15% 0.04 25);
        --accent-subtle:oklch(20% 0.05 25);
        --accent-glow:  oklch(63% 0.23 25 / 0.4);
        /* Already a dark-ground accent; the image needs no substitution */
        --accent-on-image:       oklch(63% 0.23 25);
        --accent-on-image-hover: oklch(70% 0.25 25);
        --accent-on-image-fg:    oklch(15% 0.04 25);
        --accent-on-image-glow:  oklch(63% 0.23 25 / 0.4);
        --border:       oklch(28% 0.03 25);
        --border-muted: oklch(20% 0.02 25);
        --glass:        oklch(14% 0.02 25 / 0.85);
        --glass-border: oklch(28% 0.03 25 / 0.5);
        --nav-scrolled-bg: oklch(10% 0.015 25 / 0.9);
    }

    /* Stone (H=60 warm neutral) */
    .scheme-stone:not(.dark) {
        --bg-primary:   oklch(98% 0.005 60);
        --bg-secondary: oklch(96% 0.008 60);
        --bg-tertiary:  oklch(92% 0.012 60);
        --fg-primary:   oklch(25% 0.02 60);
        --fg-secondary: oklch(45% 0.02 60);
        --fg-muted:     oklch(50% 0.015 60);
        --accent:       oklch(45% 0.05 60);
        --accent-hover: oklch(35% 0.06 60);
        --accent-fg:    oklch(98% 0.005 60);
        --accent-subtle:oklch(92% 0.015 60);
        --accent-glow:  oklch(45% 0.05 60 / 0.3);
        /* Over the dark hero image, adopt this scheme's dark-mode accent — see .hero-bg */
        --accent-on-image:       oklch(80% 0.03 60);
        --accent-on-image-hover: oklch(90% 0.02 60);
        --accent-on-image-fg:    oklch(20% 0.02 60);
        --accent-on-image-glow:  oklch(80% 0.03 60 / 0.3);
        --border:       oklch(85% 0.01 60);
        --border-muted: oklch(90% 0.008 60);
        --glass:        oklch(98% 0.005 60);
        --glass-border: oklch(85% 0.01 60 / 0.5);
        --nav-scrolled-bg: oklch(98% 0.005 60 / 0.9);
    }
    .scheme-stone.dark {
        --bg-primary:   oklch(12% 0.01 60);
        --bg-secondary: oklch(16% 0.012 60);
        --bg-tertiary:  oklch(22% 0.015 60);
        --fg-primary:   oklch(95% 0.01 60);
        --fg-secondary: oklch(75% 0.015 60);
        --fg-muted:     oklch(61% 0.015 60);
        --accent:       oklch(80% 0.03 60);
        --accent-hover: oklch(90% 0.02 60);
        --accent-fg:    oklch(20% 0.02 60);
        --accent-subtle:oklch(25% 0.02 60);
        --accent-glow:  oklch(80% 0.03 60 / 0.3);
        /* Already a dark-ground accent; the image needs no substitution */
        --accent-on-image:       oklch(80% 0.03 60);
        --accent-on-image-hover: oklch(90% 0.02 60);
        --accent-on-image-fg:    oklch(20% 0.02 60);
        --accent-on-image-glow:  oklch(80% 0.03 60 / 0.3);
        --border:       oklch(30% 0.015 60);
        --border-muted: oklch(22% 0.012 60);
        --glass:        oklch(16% 0.012 60 / 0.85);
        --glass-border: oklch(30% 0.015 60 / 0.5);
        --nav-scrolled-bg: oklch(12% 0.01 60 / 0.9);
    }

    /* Forest (H=150 green) */
    .scheme-forest:not(.dark) {
        --bg-primary:   oklch(98% 0.008 150);
        --bg-secondary: oklch(96% 0.012 150);
        --bg-tertiary:  oklch(92% 0.018 150);
        --fg-primary:   oklch(25% 0.06 150);
        --fg-secondary: oklch(40% 0.08 150);
        --fg-muted:     oklch(50% 0.06 150);
        --accent:       oklch(49% 0.12 150);
        --accent-hover: oklch(44% 0.14 150);
        --accent-fg:    oklch(98% 0.01 150);
        --accent-subtle:oklch(92% 0.025 150);
        --accent-glow:  oklch(49% 0.12 150 / 0.3);
        /* Over the dark hero image, adopt this scheme's dark-mode accent — see .hero-bg */
        --accent-on-image:       oklch(70% 0.12 150);
        --accent-on-image-hover: oklch(80% 0.1 150);
        --accent-on-image-fg:    oklch(15% 0.04 150);
        --accent-on-image-glow:  oklch(70% 0.12 150 / 0.3);
        --border:       oklch(85% 0.02 150);
        --border-muted: oklch(90% 0.015 150);
        --glass:        oklch(98% 0.008 150);
        --glass-border: oklch(85% 0.02 150 / 0.5);
        --nav-scrolled-bg: oklch(98% 0.008 150 / 0.9);
    }
    .scheme-forest.dark {
        --bg-primary:   oklch(12% 0.015 150);
        --bg-secondary: oklch(16% 0.02 150);
        --bg-tertiary:  oklch(22% 0.025 150);
        --fg-primary:   oklch(95% 0.02 150);
        --fg-secondary: oklch(75% 0.05 150);
        --fg-muted:     oklch(61% 0.04 150);
        --accent:       oklch(70% 0.12 150);
        --accent-hover: oklch(80% 0.1 150);
        --accent-fg:    oklch(15% 0.04 150);
        --accent-subtle:oklch(25% 0.04 150);
        --accent-glow:  oklch(70% 0.12 150 / 0.3);
        /* Already a dark-ground accent; the image needs no substitution */
        --accent-on-image:       oklch(70% 0.12 150);
        --accent-on-image-hover: oklch(80% 0.1 150);
        --accent-on-image-fg:    oklch(15% 0.04 150);
        --accent-on-image-glow:  oklch(70% 0.12 150 / 0.3);
        --border:       oklch(30% 0.03 150);
        --border-muted: oklch(22% 0.02 150);
        --glass:        oklch(16% 0.02 150 / 0.85);
        --glass-border: oklch(30% 0.03 150 / 0.5);
        --nav-scrolled-bg: oklch(12% 0.015 150 / 0.9);
    }

    /* Sunset (H=45 orange-amber) */
    .scheme-sunset:not(.dark) {
        --bg-primary:   oklch(98% 0.01 45);
        --bg-secondary: oklch(96% 0.015 45);
        --bg-tertiary:  oklch(92% 0.02 45);
        --fg-primary:   oklch(30% 0.08 45);
        --fg-secondary: oklch(42% 0.1 45);
        --fg-muted:     oklch(50% 0.08 45);
        --accent:       oklch(52% 0.16 45);
        --accent-hover: oklch(46% 0.18 45);
        --accent-fg:    oklch(98% 0.01 45);
        --accent-subtle:oklch(92% 0.03 45);
        --accent-glow:  oklch(52% 0.16 45 / 0.3);
        /* Over the dark hero image, adopt this scheme's dark-mode accent — see .hero-bg */
        --accent-on-image:       oklch(72% 0.14 45);
        --accent-on-image-hover: oklch(82% 0.12 45);
        --accent-on-image-fg:    oklch(15% 0.05 45);
        --accent-on-image-glow:  oklch(72% 0.14 45 / 0.3);
        --border:       oklch(85% 0.025 45);
        --border-muted: oklch(90% 0.02 45);
        --glass:        oklch(98% 0.01 45);
        --glass-border: oklch(85% 0.025 45 / 0.5);
        --nav-scrolled-bg: oklch(98% 0.01 45 / 0.9);
    }
    .scheme-sunset.dark {
        --bg-primary:   oklch(12% 0.02 45);
        --bg-secondary: oklch(16% 0.025 45);
        --bg-tertiary:  oklch(22% 0.03 45);
        --fg-primary:   oklch(95% 0.025 45);
        --fg-secondary: oklch(75% 0.06 45);
        --fg-muted:     oklch(61% 0.05 45);
        --accent:       oklch(72% 0.14 45);
        --accent-hover: oklch(82% 0.12 45);
        --accent-fg:    oklch(15% 0.05 45);
        --accent-subtle:oklch(25% 0.05 45);
        --accent-glow:  oklch(72% 0.14 45 / 0.3);
        /* Already a dark-ground accent; the image needs no substitution */
        --accent-on-image:       oklch(72% 0.14 45);
        --accent-on-image-hover: oklch(82% 0.12 45);
        --accent-on-image-fg:    oklch(15% 0.05 45);
        --accent-on-image-glow:  oklch(72% 0.14 45 / 0.3);
        --border:       oklch(30% 0.035 45);
        --border-muted: oklch(22% 0.025 45);
        --glass:        oklch(16% 0.025 45 / 0.85);
        --glass-border: oklch(30% 0.035 45 / 0.5);
        --nav-scrolled-bg: oklch(12% 0.02 45 / 0.9);
    }

    /* Mono (C=0 pure grayscale; status colors inherited from :root defaults) */
    .scheme-mono:not(.dark) {
        --bg-primary:   oklch(98% 0 0);
        --bg-secondary: oklch(96% 0 0);
        --bg-tertiary:  oklch(92% 0 0);
        --fg-primary:   oklch(20% 0 0);
        --fg-secondary: oklch(40% 0 0);
        --fg-muted:     oklch(50% 0 0);
        --accent:       oklch(25% 0 0);
        --accent-hover: oklch(35% 0 0);
        --accent-fg:    oklch(98% 0 0);
        --accent-subtle:oklch(90% 0 0);
        --accent-glow:  oklch(25% 0 0 / 0.2);
        /* Over the dark hero image, adopt this scheme's dark-mode accent — see .hero-bg */
        --accent-on-image:       oklch(85% 0 0);
        --accent-on-image-hover: oklch(92% 0 0);
        --accent-on-image-fg:    oklch(12% 0 0);
        --accent-on-image-glow:  oklch(85% 0 0 / 0.3);
        --border:       oklch(85% 0 0);
        --border-muted: oklch(90% 0 0);
        --glass:        oklch(98% 0 0);
        --glass-border: oklch(85% 0 0 / 0.5);
        --nav-scrolled-bg: oklch(100% 0 0 / 0.95);
    }
    .scheme-mono.dark {
        --bg-primary:   oklch(10% 0 0);
        --bg-secondary: oklch(15% 0 0);
        --bg-tertiary:  oklch(22% 0 0);
        --fg-primary:   oklch(95% 0 0);
        --fg-secondary: oklch(75% 0 0);
        --fg-muted:     oklch(61% 0 0);
        --accent:       oklch(85% 0 0);
        --accent-hover: oklch(92% 0 0);
        --accent-fg:    oklch(12% 0 0);
        --accent-subtle:oklch(25% 0 0);
        --accent-glow:  oklch(85% 0 0 / 0.3);
        /* Already a dark-ground accent; the image needs no substitution */
        --accent-on-image:       oklch(85% 0 0);
        --accent-on-image-hover: oklch(92% 0 0);
        --accent-on-image-fg:    oklch(12% 0 0);
        --accent-on-image-glow:  oklch(85% 0 0 / 0.3);
        --border:       oklch(30% 0 0);
        --border-muted: oklch(22% 0 0);
        --glass:        oklch(15% 0 0 / 0.85);
        --glass-border: oklch(30% 0 0 / 0.5);
        --nav-scrolled-bg: oklch(10% 0 0 / 0.9);
    }
}

/* ============================================
   SITE COMPONENTS - Marketing Layout
   ============================================ */

@layer site-components {
    /* ============================================
       TYPOGRAPHY - Heading Fonts
       ============================================ */

    h1, h2, h3, h4, h5, h6,
    .section-title,
    .footer-brand {
        font-family: var(--font-heading);
    }

    /* ============================================
       LAYOUT OVERRIDES - Edge-to-Edge Marketing
       ============================================ */

    /* Content-width column: the Appearance Narrow/Normal/Wide buttons drive
       --content-max; main#content caps at it (margin-inline auto) so the whole content
       column narrows/widens. The hero's fixed background still spans full-bleed. */
    main {
        padding: 0;
    }

    /* Content-width column: cap each SECTION at --content-max (centered), NOT main
       itself — main keeps base.css's pinned-sidebar margins, so pinning still restricts
       the available width and the two compose (content width = min(--content-max, the
       area between pinned sidebars)). The Appearance Narrow/Normal/Wide toggle drives
       --content-max; the hero's fixed background stays full-bleed. */
    @media (min-width: 960px) {
        main > section {
            max-width: var(--content-max);
            margin-inline: auto;
        }
    }

    /* Overlay visible on mobile when sidebar open (base.css controls visibility) */

    /* ============================================
       APP SHELL - Translucent Sidebars
       ============================================ */

    .sidebar {
        background: var(--glass);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
    }

    .carousel-header {
        border-block-end-color: var(--glass-border);
    }

    .sidebar nav a {
        color: var(--fg-secondary);
    }

    .sidebar nav a:hover {
        color: var(--accent);
        background: var(--accent-subtle);
    }

    .sidebar nav a.active {
        color: var(--accent);
        background: var(--accent-subtle);
        border-color: var(--accent);
    }

    /* Topnav styling */
    .topnav {
        background: var(--glass);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-block-end: 1px solid var(--glass-border);
    }

    .topnav .brand {
        font-family: var(--font-heading);
        font-weight: 700;
        color: var(--fg-primary);
    }

    .topnav .brand span {
        color: var(--accent);
    }

    /* ============================================
       GLOBAL BACKGROUND IMAGE
       ============================================ */

    body {
        background: var(--hero-bg) center/cover fixed;
        background-attachment: fixed;
        min-height: 100vh;
    }

    /* ============================================
       HERO SECTION
       ============================================ */

    .hero {
        text-align: center;
        padding: var(--space-16) var(--space-4);
    }

    .hero-bg {
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
    }

    /* No hero scrim: Server_Room_Dark.webp is already darkened (it bakes in its own
       overlay), so a ::before scrim doubled it. The pre-darkened image carries the
       white hero text on its own. */

    html.light .hero-bg p { color: #fff; }

    /* The hero and the image sections sit on Server_Room_Dark.webp, which bakes in
       its own darkening — a dark ground in every scheme and both modes. A light
       mode's --accent is tuned for a near-white surface and loses contrast there,
       so each context declares what its accent becomes over the image (light modes
       nominate their own dark-mode accent; dark modes nominate themselves).

       --accent-fg moves WITH --accent: .cta-btn.primary lives inside .hero-bg and
       pairs them. The hand-authored mono rule this replaces moved --accent and
       --accent-fg only, and only for mono — every other light scheme kept a
       light-tuned accent over the dark photo. */
    .hero-bg,
    .bg-image-section {
        --accent:       var(--accent-on-image);
        --accent-hover: var(--accent-on-image-hover);
        --accent-fg:    var(--accent-on-image-fg);
        --accent-glow:  var(--accent-on-image-glow);
    }

    .hero-bg > * {
        position: relative;
        z-index: 1;
    }

    .hero-bg h1 {
        color: #fff;
        font-size: clamp(2.5rem, 2rem + 5vw, 5rem);
        line-height: 1.1;
        margin-block-end: var(--space-4);
    }

    .hero-bg p {
        color: rgba(255, 255, 255, 0.9);
        font-size: var(--text-xl);
        max-width: 600px;
        margin-inline: auto;
    }

    .hero-content {
        text-align: center;
        max-width: var(--container-lg);
        animation: fade-in-up 1s var(--ease-out);
    }

    /* Hero badge */
    .hero-badge {
        display: inline-flex;
        align-items: center;
        gap: var(--space-2);
        background: rgb(255 255 255 / 0.1);
        border: 1px solid rgb(255 255 255 / 0.2);
        padding: var(--space-2) var(--space-5);
        border-radius: var(--radius-full);
        font-size: var(--text-xs);
        color: #fff;
        margin-block-end: var(--space-8);
        backdrop-filter: blur(10px);
    }

    /* Gradient text - uses accent color */
    .gradient-text {
        color: var(--accent);
    }

    /* Shimmer gradient text */
    .shimmer-text {
        background: linear-gradient(
            90deg,
            var(--accent) 0%,
            var(--accent) 35%,
            oklch(95% 0.05 200) 50%,
            var(--accent) 65%,
            var(--accent) 100%
        );
        background-size: 200% 100%;
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
        animation: shimmer 10s linear infinite;
    }

    @keyframes shimmer {
        0% { background-position: 200% 0; }
        100% { background-position: -200% 0; }
    }

    /* Page hero (shorter) */
    .page-hero {
        min-height: 50vh;
    }

    /* ============================================
       SECTIONS
       ============================================ */

    /* Content section */
    .content-section {
        background: var(--bg-secondary);
        padding: var(--space-16) var(--space-4);
    }

    /* Section with background image visible (no solid bg) */
    .bg-image-section {
        position: relative;
        min-height: 30vh;
        padding: var(--space-16) var(--space-4);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* No dark scrim: the background image is already darkened, and with the content
       column capped (main max-width) a centered overlay block would read as a dark
       rectangle on the full-bleed body image — so it's removed in both modes. */

    .bg-image-section > * {
        position: relative;
        z-index: 1;
    }

    .bg-image-section .section-title,
    .bg-image-section .section-subtitle { color: #fff; }

    .bg-image-section .section-tag { color: var(--accent); }

    .bg-image-section .section-header { margin-block-end: 0; }

    /* Section header */
    .section-header {
        text-align: center;
        margin-block-end: var(--space-12);
    }

    .section-tag {
        display: inline-block;
        color: var(--accent);
        font-weight: 600;
        font-size: var(--text-sm);
        letter-spacing: 0.1em;
        text-transform: uppercase;
        margin-block-end: var(--space-4);
    }

    .section-title {
        font-size: var(--text-4xl);
        font-weight: 700;
        margin-block-end: var(--space-4);
        color: var(--fg-primary);
    }

    .section-subtitle {
        color: var(--fg-secondary);
        font-size: var(--text-lg);
        max-width: 600px;
        margin-inline: auto;
    }

    .section-lede {
        max-width: 720px;
        margin: 0 auto var(--space-12);
        text-align: center;
        font-size: var(--text-lg);
        line-height: 1.7;
        color: var(--fg-secondary);
    }

    .section-lede code {
        background: var(--bg-tertiary);
        padding: 0.1em 0.4em;
        border-radius: var(--radius-sm);
        font-size: 0.9em;
        color: var(--fg-primary);
    }

    .section-lede strong {
        color: var(--fg-primary);
    }

    /* ============================================
       SERVICE CARDS
       ============================================ */

    .services-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: var(--space-4);
        max-width: none;
        margin-inline: auto;
    }

    .service-card {
        background: var(--glass);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border: 1px solid var(--glass-border);
        padding: var(--space-6);
        border-radius: var(--radius-xl);
        position: relative;
        overflow: hidden;
        /* Initial transparent shadow for smooth transition */
        box-shadow: 0 20px 40px rgb(0 0 0 / 0), 0 0 20px transparent;
        /* Explicit transition properties for reliable hover */
        transition:
            transform var(--transition-medium),
            box-shadow var(--transition-medium),
            border-color var(--transition-medium);
    }

    .service-card::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: var(--accent);
        opacity: 0;
        transition: opacity var(--transition-medium);
    }

    .service-card:hover,
    .service-card.reveal.active:hover {
        transform: translateY(-4px) scale(1);
        border-color: var(--accent);
        box-shadow: 0 20px 40px rgb(0 0 0 / 0.15), 0 0 20px var(--accent-glow);
    }

    .service-card:hover::before { opacity: 1; }

    .service-icon {
        font-size: 2rem;
        margin-block-end: var(--space-4);
        display: block;
        color: var(--accent);
        transition: transform var(--transition-medium);
    }

    .service-icon .lucide,
    .service-icon [data-lucide] {
        width: 2rem;
        height: 2rem;
        color: var(--accent);
        stroke: var(--accent);
    }

    .service-card:hover .service-icon { transform: scale(1.1); }

    .service-card h3 {
        font-size: var(--text-lg);
        font-weight: 600;
        margin-block-end: var(--space-3);
        color: var(--fg-primary);
    }

    .service-card ul { list-style: none; }

    .service-card li {
        padding: 0.3rem 0;
        padding-inline-start: var(--space-5);
        position: relative;
        color: var(--fg-secondary);
        font-size: var(--text-sm);
    }

    .service-card li::before {
        content: "\2713";
        position: absolute;
        left: 0;
        color: var(--accent);
        font-weight: bold;
    }

    /* "6 Color Schemes" cards — each card IS its scheme: bg = scheme bg, text =
       scheme fg, icon + hover top-border + checkmarks = scheme accent. Theme-aware
       (light/dark). The card's own rules already read --glass / --accent / --fg-*,
       so we just remap those from the per-scheme --sw-* tokens below. Values mirror
       the .scheme-* blocks above. */
    .service-card[data-card-scheme] {
        --glass: var(--sw-bg);
        --glass-border: color-mix(in oklch, var(--sw-fg) 14%, transparent);
        --accent: var(--sw-ac);
        --accent-glow: color-mix(in oklch, var(--sw-ac) 30%, transparent);
        --fg-primary: var(--sw-fg);
        --fg-secondary: color-mix(in oklch, var(--sw-fg) 68%, var(--sw-bg));
    }

    /* per-scheme colours — light */
    .service-card[data-card-scheme="ocean"]   { --sw-bg: oklch(98% 0.008 220); --sw-fg: oklch(25% 0.06 220); --sw-ac: oklch(50% 0.12 220); }
    .service-card[data-card-scheme="crimson"] { --sw-bg: oklch(98% 0.008 25);  --sw-fg: oklch(25% 0.04 25);  --sw-ac: oklch(47% 0.2 25); }
    .service-card[data-card-scheme="stone"]   { --sw-bg: oklch(98% 0.005 60);  --sw-fg: oklch(25% 0.02 60);  --sw-ac: oklch(45% 0.05 60); }
    .service-card[data-card-scheme="forest"]  { --sw-bg: oklch(98% 0.008 150); --sw-fg: oklch(25% 0.06 150); --sw-ac: oklch(49% 0.12 150); }
    .service-card[data-card-scheme="sunset"]  { --sw-bg: oklch(98% 0.01 45);   --sw-fg: oklch(30% 0.08 45);  --sw-ac: oklch(52% 0.16 45); }
    .service-card[data-card-scheme="mono"]    { --sw-bg: oklch(98% 0 0);       --sw-fg: oklch(20% 0 0);      --sw-ac: oklch(25% 0 0); }

    /* per-scheme colours — dark */
    html.dark .service-card[data-card-scheme="ocean"]   { --sw-bg: oklch(12% 0.015 220); --sw-fg: oklch(95% 0.02 220); --sw-ac: oklch(75% 0.12 220); }
    html.dark .service-card[data-card-scheme="crimson"] { --sw-bg: oklch(10% 0.015 25);  --sw-fg: oklch(95% 0.02 25);  --sw-ac: oklch(63% 0.23 25); }
    html.dark .service-card[data-card-scheme="stone"]   { --sw-bg: oklch(12% 0.01 60);   --sw-fg: oklch(95% 0.01 60);  --sw-ac: oklch(80% 0.03 60); }
    html.dark .service-card[data-card-scheme="forest"]  { --sw-bg: oklch(12% 0.015 150); --sw-fg: oklch(95% 0.02 150); --sw-ac: oklch(70% 0.12 150); }
    html.dark .service-card[data-card-scheme="sunset"]  { --sw-bg: oklch(12% 0.02 45);   --sw-fg: oklch(95% 0.025 45); --sw-ac: oklch(72% 0.14 45); }
    html.dark .service-card[data-card-scheme="mono"]    { --sw-bg: oklch(10% 0 0);       --sw-fg: oklch(95% 0 0);      --sw-ac: oklch(85% 0 0); }

    .services-grid-2col { grid-template-columns: 1fr; }

    /* ============================================
       PRICING TABLES
       ============================================ */

    .pricing-tables-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: var(--space-6);
        max-width: none;
        margin-inline: auto;
    }

    .pricing-table {
        background: var(--glass);
        border: 1px solid var(--glass-border);
        border-radius: var(--radius-xl);
        overflow: hidden;
    }

    .pricing-table-header {
        background: var(--accent);
        color: var(--accent-fg);
        padding: var(--space-4);
        text-align: center;
        font-family: var(--font-heading);
        font-size: var(--text-lg);
        font-weight: 600;
    }

    .pricing-table-row {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: var(--space-3) var(--space-4);
        border-bottom: 1px solid var(--glass-border);
        transition: background-color var(--transition-base);
    }

    .pricing-table-row:last-child { border-bottom: none; }
    .pricing-table-row:hover { background: var(--accent-subtle); }
    .pricing-table-row span:first-child { color: var(--fg-secondary); }
    .pricing-table-row span:first-child strong { color: var(--fg-primary); }
    .pricing-table-row span:last-child { color: var(--accent); font-weight: 600; }

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

    .cta-group {
        display: flex;
        gap: var(--space-4);
        justify-content: center;
        flex-wrap: wrap;
        margin-top: var(--space-8);
    }

    .cta-btn {
        display: inline-flex;
        align-items: center;
        gap: var(--space-2);
        padding: var(--space-3) var(--space-6);
        border-radius: var(--radius-lg);
        text-decoration: none;
        font-weight: 600;
        font-size: var(--text-base);
        transition:
            background-color var(--transition-base),
            transform var(--transition-base),
            box-shadow var(--transition-base);
    }

    .cta-btn.primary {
        background: var(--accent);
        color: var(--accent-fg);
        box-shadow: 0 4px 20px var(--accent-glow);
    }

    .cta-btn.primary:hover {
        background: var(--accent-hover);
        transform: translateY(-2px);
        box-shadow: 0 8px 30px var(--accent-glow);
        text-decoration: none;
    }

    /* The outlined CTA was authored white-on-10%-white for the hero, but it is also
       used in #build, an opaque .content-section (--bg-secondary, 96% L in light
       mode) — white on 96% white is invisible text, not low contrast. So the base
       rule is base.css's own .btn-outline treatment (transparent + --border +
       --fg-primary) and the always-dark grounds keep the frosted white explicitly.
       Same principle as --accent-on-image: the element does not guess its ground,
       the ground declares itself.

       --border does not itself clear the 1.4.11 3:1 non-text floor in any of the
       twelve contexts (85% L over a 96% L --bg-secondary in light modes). That is a
       palette-wide gap, not this button's — it is deliberately spent through the
       token rather than patched here with a bespoke mix, so that raising --border
       fixes this control along with every other bordered one. The label itself
       clears AA, so the control stays identifiable meanwhile. */
    .cta-btn.secondary {
        background: transparent;
        border: 1px solid var(--border);
        color: var(--fg-primary);
    }

    /* .cta-btn.secondary is transparent, so its resting background IS whatever
       surface it sits on; hovering to --bg-secondary would be invisible inside
       #build, which is exactly what .content-section paints. --bg-tertiary differs
       from both --bg-primary and --bg-secondary, so the hover reads on either.
       This matches base.css, which had the same flaw in .btn-outline/.btn-ghost
       until v1.0.2 fixed it framework-wide; .cta-btn is a site class, so it still
       needs its own rule. */
    .cta-btn.secondary:hover {
        background: var(--bg-tertiary);
        border-color: var(--fg-muted);
        transform: translateY(-2px);
        text-decoration: none;
    }

    .hero-bg .cta-btn.secondary,
    .bg-image-section .cta-btn.secondary {
        background: rgb(255 255 255 / 0.1);
        border-color: rgb(255 255 255 / 0.3);
        color: #fff;
        backdrop-filter: blur(10px);
    }

    .hero-bg .cta-btn.secondary:hover,
    .bg-image-section .cta-btn.secondary:hover {
        background: rgb(255 255 255 / 0.2);
        border-color: #fff;
    }

    /* ============================================
       PARTICLES
       ============================================ */

    .particles {
        position: fixed;
        inset: 0;
        pointer-events: none;
        z-index: 0;
        overflow: hidden;
    }

    .particle {
        position: absolute;
        width: 4px;
        height: 4px;
        background: var(--accent);
        border-radius: var(--radius-full);
        opacity: var(--particle-opacity);
        animation: float-up 15s linear infinite;
    }

    @keyframes float-up {
        0% { transform: translateY(100vh) scale(0); opacity: 0; }
        10%, 90% { opacity: var(--particle-opacity); }
        100% { transform: translateY(-100vh) scale(1); opacity: 0; }
    }

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

    .footer-main {
        background: var(--bg-secondary);
        border-block-start: 1px solid var(--glass-border);
        padding: var(--space-12) var(--space-4) var(--space-8);
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: var(--space-8);
        max-width: none;
        margin-inline: auto;
    }

    .footer-col .footer-brand {
        font-size: 1.5rem;
        font-weight: 700;
        margin-block-end: var(--space-4);
        color: var(--fg-primary);
    }

    .footer-col .footer-brand span { color: var(--accent); }

    .footer-col h4 {
        font-size: var(--text-base);
        font-weight: 600;
        color: var(--fg-primary);
        margin-block-end: var(--space-4);
        display: flex;
        align-items: center;
        gap: var(--space-2);
    }

    .footer-col h4 .lucide,
    .footer-col h4 [data-lucide] {
        color: var(--accent);
        stroke: var(--accent);
    }

    .footer-col p {
        color: var(--fg-secondary);
        font-size: var(--text-sm);
        margin-block-end: var(--space-2);
    }

    .footer-col .contact-line {
        display: flex;
        align-items: center;
        gap: var(--space-2);
        margin-block-end: var(--space-2);
        font-size: var(--text-sm);
        color: var(--fg-secondary);
    }

    .footer-col .contact-line .lucide,
    .footer-col .contact-line [data-lucide] {
        color: var(--accent);
        stroke: var(--accent);
        flex-shrink: 0;
    }

    .footer-col .contact-line a {
        color: var(--fg-secondary);
        text-decoration: none;
        transition: color var(--transition-fast);
    }

    .footer-col .contact-line a:hover { color: var(--accent); }

    .footer-copyright {
        border-block-start: 1px solid var(--glass-border);
        margin-block-start: var(--space-8);
        padding-block-start: var(--space-6);
        text-align: center;
        color: var(--fg-muted);
        font-size: var(--text-xs);
    }

    /* ============================================
       ANIMATIONS
       ============================================ */

    @keyframes fade-in-up {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }

    .reveal {
        opacity: 0;
        transform: translateY(100px) scale(0.95);
        transition: opacity var(--transition-long), transform var(--transition-long);
    }

    /* Anything already on screen at load is snapped visible with no slide-up.
       initScrollReveal does that by suppressing this transition for one frame and
       then handing it straight back, NOT with a `.reveal-instant { transition:none }`
       class — that class was permanent, so it also killed the hover lift on every
       card that happened to be above the fold. Only sections scrolled into view
       afterwards animate their entrance. */

    .reveal.active {
        opacity: 1;
        transform: translateY(0) scale(1);
    }

    /* ============================================
       RESPONSIVE - Standardized breakpoints
       600px, 900px, 1200px
       ============================================ */

    @media (min-width: 600px) {
        .services-grid { grid-template-columns: repeat(2, 1fr); }
        .pricing-tables-grid { grid-template-columns: repeat(2, 1fr); }
        .services-grid-2col { grid-template-columns: repeat(2, 1fr); }
        .footer-grid { grid-template-columns: repeat(2, 1fr); }
        .service-card { padding: var(--space-8); }
    }

    @media (min-width: 900px) {
        .pricing-tables-3col,
        .services-grid-3col { grid-template-columns: repeat(3, 1fr); }
    }

    @media (min-width: 1200px) {
        .bg-image-section { min-height: 40vh; }
        .services-grid { grid-template-columns: repeat(4, 1fr); }
        .services-grid-2col { grid-template-columns: repeat(2, 1fr); }
        .services-grid-3col { grid-template-columns: repeat(3, 1fr); }
        .footer-grid { grid-template-columns: repeat(4, 1fr); }
    }
}

/* ============================================
   SITE UTILITIES - Site-specific only
   No duplicates from base.css
   ============================================ */

@layer site-utilities {
    /* Marketing-specific spacing (larger than base.css --space-8) */
    .mt-8 { margin-block-start: var(--space-8); }
    .mb-8 { margin-block-end: var(--space-8); }
    .mt-12 { margin-block-start: var(--space-12); }
    .mb-12 { margin-block-end: var(--space-12); }

    /* Marketing-specific spacing utilities */
    .mb-1 { margin-block-end: var(--space-4); }
    .p-large { padding: var(--space-8); }

    /* Container variant */
    .container-md { max-width: 800px; }

    /* Article text styling */
    .article-heading { margin-block: var(--space-4) var(--space-2); }
    .article-text { color: var(--fg-secondary); line-height: var(--leading-relaxed); }
    .icon-header { display: flex; align-items: center; gap: var(--space-2); }
}