/* cornerstonedevs.com | full-stack developers */
:root {
    --color-bg: #030304;
    --color-surface: #0a0a0c;
    --color-border: #27272a;
    --color-muted: #71717a;
    --color-text: #f4f4f5;
    /* Logo-aligned palette: emerald/teal (25A18A, 5EC77A, 93E68E, 1A4F5D) */
    --color-accent: #25a18a;
    --color-accent-bright: #5ec77a;
    --color-accent-light: #93e68e;
    --color-cyan: #22d3ee;
    --color-violet: #a78bfa;
    --color-fuchsia: #e879f9;
    --color-coral: #fb7185;
    --font-sans: 'Inter', system-ui, sans-serif;
    --font-display: 'Space Grotesk', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;
    /* Legacy palette (discovery/legacy pages) mapped to logo theme */
    --sage-green: #25a18a;
    --deep-sage: #1a4f5d;
    --lavender: #a78bfa;
    --blush-pink: #fb7185;
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, var(--color-border), #3f3f46); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: linear-gradient(180deg, var(--color-accent), var(--color-cyan)); }

::selection { background: linear-gradient(135deg, var(--color-accent), var(--color-cyan)); color: #000; }

/* Background layers */
.bg-noise {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none; z-index: 0; opacity: 0.05;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
}

.hero-glow {
    position: fixed; top: -50%; left: -20%; width: 80%; height: 120%;
    pointer-events: none; z-index: 0;
    background: radial-gradient(ellipse 80% 60% at 30% 40%, rgba(37, 161, 138, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse 60% 80% at 70% 60%, rgba(34, 211, 238, 0.06) 0%, transparent 50%),
                radial-gradient(ellipse 50% 50% at 80% 20%, rgba(167, 139, 250, 0.05) 0%, transparent 45%);
}

.grid-bg {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none; z-index: 0; opacity: 0.03;
    background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 64px 64px;
}

/* Hero animated logo: blend so white/light background recedes on dark page */
.hero-logo-video-wrap {
    width: min(120px, 20vw);
    mix-blend-mode: multiply;
    isolation: isolate;
}

.hero-logo-video {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 0.5rem;
}

/* Nav */
.site-nav {
    border-bottom: 1px solid rgba(255,255,255,0.06);
    background: rgba(3,3,4,0.8);
    backdrop-filter: blur(20px);
    transition: background 0.3s, box-shadow 0.3s;
    overflow: hidden;
}

.site-nav .logo {
    font-family: var(--font-display);
    font-weight: 500;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.site-nav .logo-dot {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), var(--color-cyan));
    color: #000;
    font-size: 0.7rem;
    font-weight: 600;
    box-shadow: 0 0 20px rgba(37, 161, 138, 0.3);
    transition: transform 0.3s, box-shadow 0.3s;
}

.site-nav .logo:hover .logo-dot {
    transform: scale(1.08);
    box-shadow: 0 0 28px rgba(37, 161, 138, 0.45);
}

.site-nav .logo-img {
    height: 2.25rem;
    max-height: 2.25rem;
    width: auto;
    max-width: 6rem;
    display: block;
    object-fit: contain;
    flex-shrink: 0;
    transition: transform 0.3s;
    vertical-align: middle;
}

.site-nav .logo:hover .logo-img {
    transform: scale(1.05);
}

.site-nav .link {
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-muted);
    transition: color 0.2s;
    position: relative;
}

.site-nav .link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-cyan));
    transition: width 0.25s ease;
}

.site-nav .link:hover {
    color: var(--color-text);
}

.site-nav .link:hover::after {
    width: 100%;
}

.site-nav .cta {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: #000;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-bright));
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    transition: transform 0.2s, box-shadow 0.3s;
}

.site-nav .cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 24px rgba(37, 161, 138, 0.35);
}

/* Typography */
.label {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    background: linear-gradient(90deg, var(--color-accent), var(--color-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.heading-1 {
    font-family: var(--font-display);
    font-weight: 500;
    letter-spacing: -0.03em;
    line-height: 1.05;
}

.heading-2 {
    font-family: var(--font-display);
    font-weight: 500;
    letter-spacing: -0.02em;
}

.body-muted {
    color: var(--color-muted);
    font-weight: 300;
    line-height: 1.6;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-accent), var(--color-cyan), var(--color-violet));
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 8s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Cards: interactive, coloured */
.card {
    background: rgba(18, 18, 20, 0.6);
    border: 1px solid var(--color-border);
    border-radius: 1rem;
    transition: transform 0.3s ease, border-color 0.3s, box-shadow 0.3s, background 0.3s;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    background: linear-gradient(135deg, transparent 40%, rgba(37, 161, 138, 0.15) 50%, transparent 60%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.card:hover {
    transform: translateY(-6px);
    border-color: rgba(63, 63, 70, 0.8);
    box-shadow: 0 20px 40px -12px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.03);
    background: rgba(24, 24, 28, 0.7);
}

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

.card-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover .card-icon {
    transform: scale(1.05);
}

.card-icon.lime { background: rgba(37, 161, 138, 0.15); color: var(--color-accent); box-shadow: 0 0 20px rgba(37, 161, 138, 0.1); }
.card-icon.cyan { background: rgba(34, 211, 238, 0.15); color: var(--color-cyan); box-shadow: 0 0 20px rgba(34, 211, 238, 0.1); }
.card-icon.violet { background: rgba(167, 139, 250, 0.15); color: var(--color-violet); box-shadow: 0 0 20px rgba(167, 139, 250, 0.1); }
.card-icon.fuchsia { background: rgba(232, 121, 249, 0.15); color: var(--color-fuchsia); box-shadow: 0 0 20px rgba(232, 121, 249, 0.1); }
.card-icon.coral { background: rgba(251, 113, 133, 0.15); color: var(--color-coral); box-shadow: 0 0 20px rgba(251, 113, 133, 0.1); }

.card:hover .card-icon.lime { box-shadow: 0 0 28px rgba(37, 161, 138, 0.25); }
.card:hover .card-icon.cyan { box-shadow: 0 0 28px rgba(34, 211, 238, 0.25); }
.card:hover .card-icon.violet { box-shadow: 0 0 28px rgba(167, 139, 250, 0.25); }
.card:hover .card-icon.fuchsia { box-shadow: 0 0 28px rgba(232, 121, 249, 0.25); }
.card:hover .card-icon.coral { box-shadow: 0 0 28px rgba(251, 113, 133, 0.25); }

/* Badges with colour variants */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.3rem 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.625rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-radius: 0.375rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.badge:hover {
    transform: scale(1.02);
}

.badge-accent {
    background: rgba(37, 161, 138, 0.18);
    color: var(--color-accent);
    border: 1px solid rgba(37, 161, 138, 0.25);
}

.badge-cyan { background: rgba(34, 211, 238, 0.15); color: var(--color-cyan); border: 1px solid rgba(34, 211, 238, 0.25); }
.badge-violet { background: rgba(167, 139, 250, 0.15); color: var(--color-violet); border: 1px solid rgba(167, 139, 250, 0.25); }
.badge-fuchsia { background: rgba(232, 121, 249, 0.15); color: var(--color-fuchsia); border: 1px solid rgba(232, 121, 249, 0.25); }

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    color: #000;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-bright));
    border-radius: 0.5rem;
    transition: transform 0.2s, box-shadow 0.3s;
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent, rgba(255,255,255,0.2), transparent);
    transform: translateX(-100%);
    transition: transform 0.5s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(37, 161, 138, 0.35);
}

.btn-primary:hover::after {
    transform: translateX(100%);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    transition: border-color 0.2s, color 0.2s, box-shadow 0.2s;
}

.btn-secondary:hover {
    border-color: var(--color-cyan);
    color: var(--color-cyan);
    box-shadow: 0 0 20px rgba(34, 211, 238, 0.15);
}

/* Section rule with gradient */
.section-rule {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), rgba(37, 161, 138, 0.2), var(--color-border), transparent);
    margin: 0;
}

/* Metrics with gradient */
.metric {
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--color-accent), var(--color-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Process steps: coloured numbers */
.step-num {
    font-family: var(--font-display);
    font-weight: 600;
    transition: color 0.3s, transform 0.3s;
}

.card:hover .step-num {
    transform: scale(1.05);
}

.step-num.s1 { color: var(--color-accent); }
.step-num.s2 { color: var(--color-cyan); }
.step-num.s3 { color: var(--color-violet); }
.step-num.s4 { color: var(--color-fuchsia); }

.card:hover .step-num.s1 { text-shadow: 0 0 20px rgba(37, 161, 138, 0.4); }
.card:hover .step-num.s2 { text-shadow: 0 0 20px rgba(34, 211, 238, 0.4); }
.card:hover .step-num.s3 { text-shadow: 0 0 20px rgba(167, 139, 250, 0.4); }
.card:hover .step-num.s4 { text-shadow: 0 0 20px rgba(232, 121, 249, 0.4); }

/* Section tint strips */
.section-tint-violet {
    background: linear-gradient(180deg, transparent 0%, rgba(167, 139, 250, 0.03) 50%, transparent 100%);
}

.section-tint-cyan {
    background: linear-gradient(180deg, transparent 0%, rgba(34, 211, 238, 0.02) 50%, transparent 100%);
}

/* Mobile menu */
.mobile-menu {
    background: rgba(10, 10, 12, 0.98);
    border-bottom: 1px solid var(--color-border);
}

.mobile-menu .link {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-muted);
}

.mobile-menu .link:hover {
    color: var(--color-text);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.animate-fade-in { animation: fadeIn 0.6s ease-out forwards; }
.animate-slide-up { animation: slideUp 0.6s ease-out forwards; }

/* Scroll reveal with stagger */
.scroll-reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

@media (min-width: 769px) {
    .scroll-reveal:not(.revealed) {
        opacity: 0;
        transform: translateY(28px);
    }
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

.stagger-1 { transition-delay: 0.05s; }
.stagger-2 { transition-delay: 0.1s; }
.stagger-3 { transition-delay: 0.15s; }
.stagger-4 { transition-delay: 0.2s; }
.stagger-5 { transition-delay: 0.25s; }
.stagger-6 { transition-delay: 0.3s; }

/* List items */
.list-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    border-radius: 0.5rem;
    color: var(--color-muted);
    transition: background 0.25s, color 0.25s, transform 0.2s;
}

.list-item:hover {
    background: rgba(255,255,255,0.04);
    color: var(--color-text);
    transform: translateX(4px);
}

.list-item-icon {
    flex-shrink: 0;
    width: 1.25rem;
    height: 1.25rem;
    color: var(--color-accent);
}

.list-item-icon-muted {
    color: var(--color-muted);
    opacity: 0.6;
}

/* CTA section highlight */
.cta-section {
    background: linear-gradient(180deg, transparent 0%, rgba(37, 161, 138, 0.04) 30%, rgba(34, 211, 238, 0.03) 70%, transparent 100%);
}

/* Form inputs (dark theme) */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="number"],
textarea,
select {
    background: rgba(24, 24, 28, 0.8);
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    color: var(--color-text);
    padding: 0.75rem 1rem;
    font-family: var(--font-sans);
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(37, 161, 138, 0.15);
}

input::placeholder,
textarea::placeholder {
    color: var(--color-muted);
}

/* Stripe Elements (dark theme) */
.StripeElement {
    background: rgba(24, 24, 28, 0.8);
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--color-border);
    color: var(--color-text);
    font-family: var(--font-sans);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.StripeElement--focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(37, 161, 138, 0.15);
}

.StripeElement--invalid {
    border-color: var(--color-coral);
}

.StripeElement--complete {
    border-color: var(--color-accent);
}

/* Portfolio / legacy helpers */
.tech-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    background: rgba(37, 161, 138, 0.1);
    border: 1px solid rgba(37, 161, 138, 0.2);
    border-radius: 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    margin: 0.25rem;
    color: var(--color-muted);
}

.outcome-metric {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: rgba(37, 161, 138, 0.08);
    border: 1px solid rgba(37, 161, 138, 0.2);
    border-radius: 0.75rem;
    font-size: 0.875rem;
    margin: 0.25rem;
    color: var(--color-muted);
}

.outcome-metric i {
    color: var(--color-accent);
}