/*
  Vanguard Digital Solutions - Premium Frontend System
  Foundation, tokens, shared layout, navigation, section utilities
*/

:root {
    --midnight-primary: 214 42% 6%;
    --midnight-surface: 216 36% 10%;
    --midnight-accent: 216 28% 14%;

    --primary-accent: 206 94% 58%;
    --secondary-accent: 40 92% 61%;
    --glow-soft: 206 94% 58% / 0.22;
    --glow-strong: 40 92% 61% / 0.32;

    --text-main: 210 28% 92%;
    --text-muted: 214 15% 67%;
    --text-dim: 216 12% 54%;

    --heading-gradient: linear-gradient(120deg, #ffffff 18%, rgba(255, 240, 214, 0.86) 100%);

    --fs-xs: clamp(0.7rem, 0.66rem + 0.2vw, 0.85rem);
    --fs-sm: clamp(0.86rem, 0.81rem + 0.25vw, 1rem);
    --fs-base: clamp(1rem, 0.96rem + 0.24vw, 1.12rem);
    --fs-lg: clamp(1.2rem, 1.08rem + 0.55vw, 1.5rem);
    --fs-xl: clamp(1.72rem, 1.45rem + 1vw, 2.48rem);
    --fs-hero: clamp(2.5rem, 2rem + 3vw, 4.9rem);

    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 7rem;

    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 28px;

    --glass-bg: rgba(255, 255, 255, 0.035);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-glow: 0 16px 48px -30px rgba(2, 8, 20, 0.85);

    --transition-smooth: all 0.45s cubic-bezier(0.23, 1, 0.32, 1);
    --transition-bounce: all 0.55s cubic-bezier(0.34, 1.56, 0.64, 1);

    --font-heading: 'Instrument Serif', serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

html {
    font-size: 100%;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: hsl(var(--text-main));
    background:
        radial-gradient(circle at 82% -8%, rgba(52, 164, 255, 0.17) 0%, transparent 42%),
        radial-gradient(circle at -6% 18%, rgba(251, 187, 64, 0.1) 0%, transparent 40%),
        hsl(var(--midnight-primary));
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    opacity: 0.035;
    pointer-events: none;
    z-index: 2;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.7' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

body::after {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    background:
        radial-gradient(circle at 18% 76%, rgba(52, 164, 255, 0.12) 0%, transparent 36%),
        radial-gradient(circle at 88% 82%, rgba(251, 187, 64, 0.08) 0%, transparent 33%);
}

nav,
main,
footer {
    position: relative;
    z-index: 3;
}

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

[id] {
    scroll-margin-top: 92px;
}

::selection {
    background: hsla(var(--primary-accent), 0.35);
    color: #fff;
}

h1,
h2,
h3,
.h-font {
    font-family: var(--font-heading);
    font-weight: 400;
    line-height: 1.08;
    letter-spacing: -0.025em;
    text-wrap: balance;
}

p {
    text-wrap: pretty;
}

.mono {
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.gradient-text {
    background: var(--heading-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.container {
    width: min(1240px, 100% - 3rem);
    margin: 0 auto;
}

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

.section-head {
    max-width: 780px;
    margin-bottom: var(--space-lg);
}

.section-head.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: hsl(var(--secondary-accent));
}

.section-eyebrow::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: hsl(var(--secondary-accent));
    box-shadow: 0 0 16px hsla(var(--secondary-accent), 0.7);
}

.section-title {
    margin-top: 1rem;
    font-size: var(--fs-xl);
    color: #fff;
}

.section-copy {
    margin-top: 1rem;
    max-width: 66ch;
    color: hsl(var(--text-muted));
    font-size: var(--fs-base);
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.23, 1, 0.32, 1), transform 0.7s cubic-bezier(0.23, 1, 0.32, 1);
}

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

.reveal.d-100 {
    transition-delay: 100ms;
}

.reveal.d-200 {
    transition-delay: 200ms;
}

.reveal.d-300 {
    transition-delay: 300ms;
}

.reveal.d-400 {
    transition-delay: 400ms;
}

.glass {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-glow);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

.glass::after {
    content: "";
    position: absolute;
    left: 14%;
    right: 14%;
    bottom: -52px;
    height: 110px;
    background: radial-gradient(ellipse at center, hsla(var(--primary-accent), 0.26) 0%, transparent 72%);
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.35s ease, transform 0.35s ease;
    pointer-events: none;
    z-index: -1;
}

.glass:hover::after {
    opacity: 1;
    transform: translateY(0);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.98rem 1.6rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: var(--fs-sm);
    border: 1px solid transparent;
    transition: var(--transition-smooth);
    cursor: pointer;
}

.btn-primary {
    color: #fefefe;
    background: linear-gradient(140deg, hsla(var(--primary-accent), 1) 0%, hsla(var(--primary-accent), 0.82) 100%);
    border-color: hsla(var(--primary-accent), 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow:
        0 14px 30px -16px hsla(var(--primary-accent), 0.65),
        0 0 0 1px hsla(var(--secondary-accent), 0.4),
        0 0 28px hsla(var(--secondary-accent), 0.2);
}

.btn-secondary {
    color: #fff;
    background: rgba(255, 255, 255, 0.02);
    border-color: var(--glass-border);
}

.btn-secondary:hover {
    border-color: hsla(var(--secondary-accent), 0.5);
    box-shadow: 0 10px 26px -16px hsla(var(--secondary-accent), 0.45);
}

.btn-nav {
    padding: 0.78rem 1.25rem;
}

.navbar {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 1000;
    padding: 1.25rem 0;
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    padding: 0.8rem 0;
    background: rgba(7, 12, 20, 0.82);
    backdrop-filter: blur(22px);
    border-bottom: 1px solid var(--glass-border);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.logo {
    font-family: var(--font-mono);
    letter-spacing: 0.11em;
    font-size: var(--fs-sm);
    font-weight: 700;
    color: #fff;
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
}

.logo::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: hsl(var(--secondary-accent));
    box-shadow: 0 0 14px hsla(var(--secondary-accent), 0.85);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    font-size: var(--fs-sm);
    color: hsl(var(--text-muted));
    position: relative;
    transition: var(--transition-smooth);
}

.nav-links a:not(.btn):hover {
    color: #fff;
    text-shadow: 0 0 13px hsla(var(--secondary-accent), 0.33);
}

.nav-links a:not(.btn)::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 1.5px;
    background: hsl(var(--secondary-accent));
    transition: width 0.3s ease;
}

.nav-links a:not(.btn):hover::after {
    width: 100%;
}

.proof-strip {
    padding: 1.2rem 0 2.2rem;
}

.proof-wrap {
    display: grid;
    grid-template-columns: 1.1fr 1.9fr;
    gap: 1.2rem;
    align-items: stretch;
}

.proof-sectors {
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-md);
    padding: 1.2rem;
}

.proof-label {
    color: hsl(var(--text-dim));
}

.sector-pills {
    margin-top: 0.8rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.sector-pill {
    font-size: var(--fs-xs);
    color: #ecf1fb;
    border: 1px solid rgba(255, 255, 255, 0.13);
    border-radius: 999px;
    padding: 0.42rem 0.72rem;
    background: rgba(255, 255, 255, 0.025);
}

.metrics-row {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.8rem;
}

.metric-card {
    padding: 1rem;
    min-height: 115px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.metric-value {
    font-size: clamp(1rem, 0.7rem + 1vw, 1.38rem);
    color: hsl(var(--secondary-accent));
}

.metric-label {
    margin-top: 0.45rem;
    font-size: 0.82rem;
    color: hsl(var(--text-muted));
    line-height: 1.45;
}

.quote-band {
    padding: 0.25rem 0 2.35rem;
}

.quote-card {
    padding: 1.3rem 1.45rem;
    max-width: 920px;
}

.quote-card p {
    font-size: clamp(1.02rem, 0.95rem + 0.35vw, 1.22rem);
    color: #f7f7f9;
    line-height: 1.6;
}

.quote-card footer {
    margin-top: 0.8rem;
    color: hsl(var(--text-dim));
}

.process-section {
    padding: var(--space-xl) 0;
    background:
        linear-gradient(to bottom, rgba(255, 255, 255, 0) 0%, rgba(8, 12, 20, 0.5) 100%),
        hsl(var(--midnight-surface));
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.process-card {
    padding: 1.4rem;
    min-height: 230px;
}

.process-step {
    color: hsl(var(--secondary-accent));
}

.process-title {
    margin-top: 0.75rem;
    font-size: var(--fs-lg);
    color: #fff;
}

.process-copy {
    margin-top: 0.8rem;
    color: hsl(var(--text-muted));
    font-size: var(--fs-sm);
}

.site-footer {
    border-top: 1px solid var(--glass-border);
    padding: 2.2rem 0;
    background: rgba(2, 6, 12, 0.5);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-copy {
    margin-top: 0.55rem;
    color: hsl(var(--text-muted));
    font-size: var(--fs-xs);
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: hsl(var(--text-muted));
    font-size: var(--fs-sm);
    transition: color 0.25s ease;
}

.footer-links a:hover {
    color: #fff;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid hsla(var(--secondary-accent), 0.95);
    outline-offset: 2px;
}

@media (max-width: 1180px) {
    .proof-wrap {
        grid-template-columns: 1fr;
    }

    .metrics-row {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .process-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 980px) {
    .nav-links {
        gap: 1rem;
    }

    .nav-links a {
        font-size: var(--fs-xs);
    }

    .nav-links .btn {
        padding: 0.72rem 1rem;
    }
}

@media (max-width: 760px) {
    .container {
        width: min(1240px, 100% - 1.5rem);
    }

    .navbar {
        padding: 0.9rem 0;
    }

    .nav-container {
        flex-direction: row;
        align-items: center;
    }

    .nav-links {
        width: auto;
        margin-left: auto;
        justify-content: flex-end;
    }

    .nav-links a:not(.btn) {
        display: none;
    }

    .nav-links .btn {
        font-size: var(--fs-xs);
        padding: 0.68rem 0.9rem;
    }

    .proof-strip {
        padding: 0.6rem 0 1.6rem;
    }

    .quote-band {
        padding: 0 0 1.8rem;
    }

    .quote-card {
        padding: 1rem;
    }

    .metrics-row,
    .process-grid {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}