/* ========================================
   TECHFREEDOM — SHARED STYLES
   Shared across all pages (landing + assessment)
   ======================================== */

/* ========================================
   CSS CUSTOM PROPERTIES
   ======================================== */
:root {
    --bg-primary: #F7F5F0;
    --bg-warm: #F0EDE5;
    --bg-mist: #E8E5DD;
    --bg-fog: #D9D5CB;
    --bg-approach: rgba(212, 168, 67, 0.05);
    --text-primary: #1A2332;
    --text-secondary: #3D4A5C;
    --text-muted: #636B78;
    --accent-sky: #2B6AB0;
    --accent-sky-light: rgba(43, 106, 176, 0.12);
    --accent-amber: #D4A843;
    --accent-amber-light: rgba(212, 168, 67, 0.15);
    --accent-amber-glow: rgba(212, 168, 67, 0.4);
    --white: #FFFFFF;
    --horizon: rgba(26, 35, 50, 0.06);
    --color-error: #D9534F;

    --score-1: #2E7D32;
    --score-2: #689F38;
    --score-3: #F9A825;
    --score-4: #EF6C00;
    --score-5: #C62828;

    --font-display: 'Fraunces', serif;
    --font-body: 'DM Sans', sans-serif;

    --measure: 680px;
    --measure-wide: 920px;
    --space-xs: 0.5rem;
    --space-s: 1rem;
    --space-m: 2rem;
    --space-l: 4rem;
    --space-xl: 6rem;
    --space-2xl: 10rem;
}

/* ========================================
   RESET & BASE
   ======================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    overflow-x: hidden;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

body {
    font-family: var(--font-body);
    font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   GRAIN TEXTURE OVERLAY
   ======================================== */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.035;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 200px 200px;
}

/* ========================================
   SKIP LINK
   ======================================== */
.skip-link {
    position: absolute;
    top: 0.5rem;
    left: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--white);
    color: var(--text-primary);
    border: 2px solid currentColor;
    border-radius: 0.25rem;
    font-weight: 500;
    text-decoration: none;
    transform: translateY(-200%);
    z-index: 10000;
}

.skip-link:focus {
    transform: translateY(0);
    outline: 2px solid var(--accent-sky);
    outline-offset: 2px;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3 {
    font-family: var(--font-display);
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(3.5rem, 2.5rem + 5vw, 7rem);
    font-weight: 300;
    font-variation-settings: 'opsz' 144;
}

h2 {
    font-size: clamp(1.75rem, 1.25rem + 2.5vw, 3rem);
    font-variation-settings: 'opsz' 72;
}

h3 {
    font-size: clamp(1.25rem, 1rem + 1.25vw, 1.75rem);
    font-variation-settings: 'opsz' 48;
}

p {
    max-width: 65ch;
}

a {
    color: var(--accent-sky);
    text-decoration-thickness: 1px;
    text-underline-offset: 0.15em;
    transition: color 0.3s ease;
}

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

/* ========================================
   SCROLL ANIMATION BASE
   ======================================== */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.9s cubic-bezier(0.23, 1, 0.32, 1),
                transform 0.9s cubic-bezier(0.23, 1, 0.32, 1);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.25s; }
.reveal-delay-3 { transition-delay: 0.4s; }
.reveal-delay-4 { transition-delay: 0.55s; }

@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ========================================
   LAYOUT
   ======================================== */
.section-inner {
    max-width: var(--measure);
    margin: 0 auto;
    padding: 0 var(--space-m);
}

.section-inner--wide {
    max-width: var(--measure-wide);
}

/* ========================================
   SITE NAVIGATION
   ======================================== */
.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--space-s) var(--space-m);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-s);
    transition: background 0.4s ease, box-shadow 0.4s ease;
}

.site-nav.scrolled {
    background: rgba(247, 245, 240, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 var(--horizon);
}

.nav-wordmark {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-primary);
    text-decoration: none;
    font-variation-settings: 'opsz' 48;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
}

.nav-icon {
    display: none;
}

.nav-wordmark:hover {
    color: var(--accent-sky);
}

.nav-links {
    display: flex;
    gap: var(--space-s);
    list-style: none;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    letter-spacing: 0.02em;
    transition: color 0.3s ease;
    padding: 0.75rem 0;
}

.nav-links a:hover {
    color: var(--accent-sky);
}

.nav-links a[aria-current="page"] {
    color: var(--accent-sky);
}

.nav-cta {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    padding: 0.5em 1.25em;
    background: var(--accent-amber);
    border-radius: 4px;
    white-space: nowrap;
    transition: all 0.3s ease;
    box-shadow: 0 1px 3px rgba(212, 168, 67, 0.2);
}

.nav-cta:hover {
    color: var(--text-primary);
    transform: translateY(-1px);
    box-shadow: 0 3px 12px rgba(212, 168, 67, 0.3);
}

/* ========================================
   FOOTER
   ======================================== */
.site-footer {
    padding: var(--space-l) 0;
    border-top: 1px solid var(--horizon);
    background: var(--bg-mist);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: var(--space-s);
}

.footer-copyright {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-credit {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
}

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

/* ========================================
   SHARED RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
    :root {
        --space-xl: 4rem;
        --space-2xl: 6rem;
    }

    .nav-cta {
        display: none;
    }

    .nav-icon {
        display: block;
        width: 28px;
        height: 28px;
    }

    .nav-wordmark-text {
        display: none;
    }

    .footer-inner {
        flex-direction: column;
        gap: var(--space-xs);
    }
}

@media (max-width: 480px) {
    :root {
        --space-m: 1.5rem;
        --space-l: 2.5rem;
        --space-xl: 3rem;
        --space-2xl: 4rem;
    }

    .site-nav {
        padding-left: var(--space-s);
        padding-right: var(--space-s);
    }

    .nav-links {
        gap: 0.625rem;
    }

    .nav-links a {
        font-size: 0.8rem;
    }

}