/* ============================================
   EverGray Tech — Main Stylesheet
   ============================================
   Consumes the shared design system via vendored
   variables from @evergraytech/design-system.
   See: vendor/design-system/variables.css
   ============================================ */

/* ============================================
   Design System Tokens (upstream)
   ============================================ */
@import url('vendor/design-system/variables.css');

/* ============================================
   Site-Specific Custom Properties
   ============================================
   These are local composition decisions that belong
   to this website, not the shared design system.
   If a shared token exists upstream, do not redefine
   it here — reference the consumption guide's
   "What Must Not Be Duplicated or Hardcoded" section.
   ============================================ */
:root {
    /* Site composition: accent gradient (composed from upstream stops) */
    --site-gradient-accent: linear-gradient(
        135deg,
        var(--color-accent-gradient-stop1) 0%,
        var(--color-accent-gradient-stop2) 50%,
        var(--color-accent-gradient-stop3) 100%
    );

    /* Site composition: responsive font sizes (website-specific clamp values) */
    --site-font-size-hero: clamp(2.75rem, 6vw, var(--typography-size-4xl));
    --site-font-size-h2: clamp(2rem, 4vw, var(--typography-size-3xl));
    --site-font-size-h3: clamp(1.375rem, 2.5vw, var(--typography-size-xl));
    --site-font-size-body: clamp(var(--typography-size-base), 2vw, var(--typography-size-md));
    --site-font-size-large: clamp(var(--typography-size-md), 2.5vw, var(--typography-size-lg));

    /* Site composition: layout */
    --site-container-max-width: 1200px;
    --site-container-padding: var(--spacing-xl);

    /* Site composition: section spacing (no upstream equivalents) */
    --site-spacing-section: var(--spacing-5xl);
    --site-spacing-section-lg: 128px;
    --site-spacing-section-xl: 160px;
}

/* ============================================
   CSS Reset & Base Styles
   ============================================ */
*, *::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(--typography-family-sans);
    font-size: var(--site-font-size-body);
    font-weight: var(--typography-weight-regular);
    line-height: var(--typography-line-height-relaxed);
    color: var(--color-text-primary);
    background-color: var(--color-neutral-canvas);
    min-height: 100vh;
}

/* ============================================
   Site Header + Navigation
   ============================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(10px);
    background: rgba(10, 12, 18, 0.88);
    border-bottom: 1px solid var(--color-border-edge);
}

.site-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
    min-height: 72px;
}

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--color-text-primary);
    font-weight: var(--typography-weight-medium);
    letter-spacing: var(--typography-letter-spacing-tight);
}

.site-brand:hover {
    color: var(--color-text-primary);
}

.site-brand-logo {
    width: 32px;
    height: 32px;
}

.site-nav {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    justify-content: flex-end;
}

.site-nav-link {
    color: var(--color-text-secondary);
    font-size: var(--typography-size-sm);
    text-transform: uppercase;
    letter-spacing: var(--typography-letter-spacing-wide);
}

.site-nav-link:hover,
.site-nav-link[aria-current="page"] {
    color: var(--color-text-primary);
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--typography-weight-semibold);
    line-height: var(--typography-line-height-tight);
    letter-spacing: var(--typography-letter-spacing-tight);
    margin-bottom: var(--spacing-xl);
}

h1 {
    font-size: var(--site-font-size-hero);
}

h2 {
    font-size: var(--site-font-size-h2);
}

h3 {
    font-size: var(--site-font-size-h3);
}

p {
    margin-bottom: var(--spacing-xl);
}

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

.lead {
    font-size: var(--site-font-size-large);
    font-weight: var(--typography-weight-regular);
    color: var(--color-text-secondary);
    line-height: var(--typography-line-height-relaxed);
    letter-spacing: var(--typography-letter-spacing-tight);
}

/* ============================================
   Links
   ============================================ */
a {
    color: var(--color-accent-solid);
    text-decoration: none;
    transition: color var(--motion-duration-fast) var(--motion-easing-default);
}

a:hover {
    color: var(--color-accent-solid-hover);
}

a:focus-visible {
    outline: 2px solid var(--color-border-focus);
    outline-offset: 4px;
    border-radius: var(--radii-sm);
}

/* Elegant text link with animated underline */
.text-link {
    color: var(--color-text-secondary);
    position: relative;
    display: inline-block;
}

.text-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--site-gradient-accent);
    transition: width var(--motion-duration-normal) var(--motion-easing-default);
}

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

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

/* ============================================
   Layout Components
   ============================================ */
.container {
    max-width: var(--site-container-max-width);
    margin: 0 auto;
    padding: 0 var(--site-container-padding);
}

section {
    padding: var(--site-spacing-section-lg) 0;
}

@media (min-width: 768px) {
    section {
        padding: var(--site-spacing-section-xl) 0;
    }
}

/* Subtle section separators — geometric divider per upstream guidance */
section + section {
    border-top: 1px solid var(--color-border-edge);
}

.hero + .apps-section {
    border-top: 0;
}

/* ============================================
   Buttons — CTA Hierarchy
   ============================================
   Per marketing-site-patterns.md §3:
   - Primary: accent treatment for true emphasis moments
   - Secondary: neutral outline/ghost, visually subordinate
   - Quiet/tertiary: text-forward, neutral
   ============================================ */
.cta-button,
.button-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-lg);
    text-decoration: none;
    border-radius: var(--radii-xl);
    transition:
        background-color var(--motion-duration-fast) var(--motion-easing-default),
        border-color var(--motion-duration-fast) var(--motion-easing-default),
        box-shadow var(--motion-duration-fast) var(--motion-easing-default),
        color var(--motion-duration-fast) var(--motion-easing-default);
    cursor: pointer;
    font-weight: var(--typography-weight-medium);
    letter-spacing: var(--typography-letter-spacing-wide);
    text-transform: uppercase;
    font-size: var(--typography-size-sm);
}

/* Primary CTA: Brand accent — reserved for true emphasis moments */
.cta-button {
    background-color: var(--color-accent-solid);
    color: var(--color-text-inverse);
    border: 1.5px solid var(--color-accent-solid);
    padding: 14px 36px;
}

.cta-button:hover {
    background-color: var(--color-accent-solid-hover);
    border-color: var(--color-accent-solid-hover);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    color: var(--color-text-inverse);
}

/* Secondary button: Neutral outline, visually subordinate */
.button-secondary {
    background: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border-divider);
    padding: 12px 28px;
}

.button-secondary:hover {
    color: var(--color-text-primary);
    border-color: var(--color-border-focus);
    background-color: rgba(255, 255, 255, 0.04);
}

/* ============================================
   Hero Section
   ============================================
   Per website-brand-atmosphere-and-graphics.md:
   - Ambient gradient fields at ≤0.15 opacity
   - Radial highlights at 0.06–0.12 opacity
   - No glassmorphism, neon glow, gradient text, colored shadows
   - Hero ambient motion: 30s+ cycles
   ============================================ */
.hero {
    min-height: calc(100vh - 72px);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* Subtle dual-source ambient glow — radial highlights at approved opacity */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(43, 92, 140, 0.06) 0%, transparent 55%),
        radial-gradient(ellipse at 70% 30%, rgba(108, 14, 35, 0.06) 0%, transparent 50%);
    pointer-events: none;
}

/* Very subtle animated ambient shift — 30s+ cycle per upstream guidance */
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 60%, rgba(108, 14, 35, 0.05) 0%, transparent 60%);
    animation: ambientShift 36s ease-in-out infinite;
    pointer-events: none;
}

@keyframes ambientShift {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero--compact {
    min-height: auto;
    padding: var(--site-spacing-section-lg) 0;
}

.hero-content--left {
    text-align: left;
    max-width: 760px;
    margin: 0;
}

.hero-content--left .hero-title::after,
.section-title--left::after {
    margin-left: 0;
    margin-right: 0;
}

.section-eyebrow {
    font-size: var(--typography-size-xs);
    font-weight: var(--typography-weight-semibold);
    letter-spacing: var(--typography-letter-spacing-wide);
    text-transform: uppercase;
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-lg);
}

.hero-logo {
    width: clamp(120px, 20vw, 200px);
    height: auto;
    margin-bottom: var(--spacing-2xl);
    /* Neutral shadow only — colored shadows prohibited */
    filter: drop-shadow(0 4px 16px rgba(0, 0, 0, 0.4));
}

/* Company name: solid color for clarity and brand impact — no gradient text */
.hero-title {
    font-size: var(--site-font-size-hero);
    font-weight: var(--typography-weight-medium);
    letter-spacing: -0.03em;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
}

/* Gradient accent bar beneath title — gradient as elegant accent, not on text */
.hero-title::after {
    content: '';
    display: block;
    width: 100px;
    height: 3px;
    background: var(--site-gradient-accent);
    margin: var(--spacing-xl) auto 0;
    border-radius: var(--radii-sm);
    opacity: 0.8;
}

.hero-tagline {
    font-size: var(--site-font-size-large);
    font-weight: var(--typography-weight-regular);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
    letter-spacing: var(--typography-letter-spacing-normal);
}

.hero-intro {
    font-size: var(--site-font-size-body);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-3xl);
    line-height: var(--typography-line-height-relaxed);
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

.hero-intro--left {
    margin-left: 0;
    margin-right: 0;
}

/* ============================================
   About Section
   ============================================ */
.about {
    background: transparent;
}

.section-title {
    text-align: center;
    margin-bottom: 80px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--site-gradient-accent);
    margin: var(--spacing-xl) auto 0;
    border-radius: var(--radii-sm);
    opacity: 0.7;
}

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

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-summary {
    margin-bottom: 80px;
}

.about-summary p {
    color: var(--color-text-secondary);
}

.about-summary .lead {
    margin-bottom: var(--spacing-2xl);
}

.competencies {
    margin-bottom: 80px;
}

.competencies h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-2xl);
}

.competencies-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.competencies-list li {
    padding: var(--spacing-xl) var(--spacing-2xl);
    background: rgba(255, 255, 255, 0.03);
    border-left: 2px solid var(--color-accent-solid-muted);
    border-radius: var(--radii-sm);
    color: var(--color-text-secondary);
    transition: background-color var(--motion-duration-fast) var(--motion-easing-default),
                border-color var(--motion-duration-fast) var(--motion-easing-default),
                color var(--motion-duration-fast) var(--motion-easing-default);
    font-size: var(--typography-size-sm);
    letter-spacing: var(--typography-letter-spacing-normal);
}

.competencies-list li:hover {
    background: rgba(255, 255, 255, 0.06);
    border-left-color: var(--color-accent-solid);
    color: var(--color-text-primary);
}

.industry-positioning {
    margin-bottom: 80px;
    padding: var(--spacing-2xl) var(--spacing-2xl);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radii-lg);
    border: 1px solid var(--color-border-edge);
}

.industry-positioning p {
    color: var(--color-text-secondary);
    margin-bottom: 0;
    font-style: italic;
}

.resume-link {
    text-align: center;
}

/* Leadership subsection */
.leadership {
    margin-top: 80px;
    padding-top: var(--spacing-4xl);
    border-top: 1px solid var(--color-border-edge);
}

.leadership h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-2xl);
}

.leadership p {
    color: var(--color-text-secondary);
}

.leadership .button-secondary {
    margin-top: var(--spacing-xl);
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    background: transparent;
}

.section-subtitle {
    text-align: center;
    font-size: var(--site-font-size-large);
    color: var(--color-text-secondary);
    margin-bottom: 80px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: var(--typography-line-height-relaxed);
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-2xl);
    max-width: 900px;
    margin: 0 auto;
}

.contact-item {
    background: rgba(255, 255, 255, 0.03);
    padding: var(--spacing-2xl);
    border-radius: var(--radii-lg);
    border: 1px solid var(--color-border-edge);
    transition:
        border-color var(--motion-duration-fast) var(--motion-easing-default),
        background-color var(--motion-duration-fast) var(--motion-easing-default);
}

.contact-item:hover {
    border-color: var(--color-border-divider);
    background: rgba(255, 255, 255, 0.05);
}

.contact-item h3 {
    font-size: var(--typography-size-xs);
    font-weight: var(--typography-weight-semibold);
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-lg);
    text-transform: uppercase;
    letter-spacing: var(--typography-letter-spacing-wide);
    line-height: 1;
}

.contact-link {
    display: block;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    transition: color var(--motion-duration-fast) var(--motion-easing-default);
}

.contact-link:hover {
    color: var(--color-text-primary);
}

.contact-text {
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

/* ============================================
   Apps Pages
   ============================================ */
.apps-section {
    background: transparent;
}

.apps-section {
    padding-top: 0;
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-2xl);
}

.app-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border-edge);
    border-radius: var(--radii-xl);
}

.app-runtime-message {
    padding: var(--spacing-xl) var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border-edge);
    border-radius: var(--radii-lg);
    color: var(--color-text-secondary);
}

.app-runtime-message--success {
    border-color: var(--color-border-divider);
}

.app-runtime-message--error {
    border-color: var(--color-accent-solid-muted);
}

.app-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: var(--spacing-2xl);
    padding: var(--spacing-3xl);
}

.app-card-status {
    font-size: var(--typography-size-xs);
    font-weight: var(--typography-weight-semibold);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: var(--typography-letter-spacing-wide);
    margin-bottom: var(--spacing-lg);
}

.app-card-title,
.app-meta-title {
    margin-bottom: var(--spacing-lg);
}

.app-card-brand {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.app-card-logo {
    width: 56px;
    height: 56px;
    object-fit: contain;
    flex-shrink: 0;
}

.app-card-tagline,
.app-card-description {
    color: var(--color-text-secondary);
}

.app-card-capabilities {
    list-style: none;
    display: grid;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.app-card-capabilities li {
    color: var(--color-text-secondary);
    padding-left: var(--spacing-xl);
    position: relative;
}

.app-card-capabilities li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.7em;
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: var(--color-accent-solid-muted);
}

.app-card-actions,
.app-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}


/* ============================================
   Legal Pages
   ============================================ */
.legal-section {
    padding-top: 0;
}

.legal-content {
    max-width: 800px;
}

.legal-updated {
    color: var(--color-text-tertiary);
    font-size: var(--typography-size-sm);
    margin-bottom: var(--spacing-2xl);
}

.legal-content h3 {
    margin-top: var(--spacing-3xl);
    margin-bottom: var(--spacing-lg);
}

.legal-content p + p {
    margin-top: var(--spacing-lg);
}


/* ============================================
   Footer
   ============================================ */
.footer {
    background-color: transparent;
    padding: var(--spacing-3xl) 0;
    border-top: 1px solid var(--color-border-edge);
}

.footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
}

@media (min-width: 768px) {
    .footer .container {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-text {
    color: var(--color-text-tertiary);
    font-size: var(--typography-size-sm);
    margin-bottom: 0;
}

.footer-links {
    display: flex;
    gap: var(--spacing-2xl);
}

.footer-links a {
    color: var(--color-text-tertiary);
    font-size: var(--typography-size-sm);
    transition: color var(--motion-duration-fast) var(--motion-easing-default);
}

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

/* ============================================
   Scroll Reveal Animations
   ============================================
   Per website-brand-atmosphere-and-graphics.md §3.1:
   - Duration: 250ms–400ms
   - Easing: --motion-easing-out
   - Translation: 16px–24px upward
   - Stagger: 50ms–80ms per element, max 3–4 elements
   - Each element reveals once
   ============================================ */

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(20px);
        transition:
            opacity var(--motion-duration-slow) var(--motion-easing-out),
            transform var(--motion-duration-slow) var(--motion-easing-out);
    }

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

    /* Stagger children: 60ms per element, max 4 elements */
    .reveal[data-delay="1"] { transition-delay: 60ms; }
    .reveal[data-delay="2"] { transition-delay: 120ms; }
    .reveal[data-delay="3"] { transition-delay: 180ms; }
    .reveal[data-delay="4"] { transition-delay: 240ms; }
}

/* ============================================
   Accessibility
   ============================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus styles for keyboard navigation */
*:focus-visible {
    outline: 2px solid var(--color-border-focus);
    outline-offset: 4px;
}

/* Respect user motion preferences — disable all motion completely */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 767px) {
    :root {
        --site-container-padding: var(--spacing-lg);
    }

    .site-header-inner {
        min-height: auto;
        padding: var(--spacing-lg) 0;
        flex-direction: column;
        align-items: flex-start;
    }

    .site-nav {
        width: 100%;
        justify-content: flex-start;
        gap: var(--spacing-lg);
    }

    .hero {
        min-height: auto;
        padding: var(--spacing-4xl) 0;
    }

    .hero-content--left {
        text-align: left;
    }

    .app-card {
        padding: var(--spacing-2xl);
    }

    .competencies-list {
        grid-template-columns: 1fr;
    }

    .contact-info {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    body {
        background: white;
        color: black;
    }

    /* Ensure scroll-reveal elements are always visible when printing */
    .reveal {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }

    .cta-button,
    .button-secondary {
        border: 1px solid black;
    }

    a {
        text-decoration: underline;
    }
}