/* ==========================================================================
   ANSIGHT DESIGN SYSTEM - PREMIUM ART-DIRECTED OVERHAUL
   Centralized CSS Custom Properties (Tokens) & Base Components
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    /* ----------------------------------------------------------------------
       1. ANSIGHT BRAND COLOR SYSTEM  (palette locked — unchanged)
       ---------------------------------------------------------------------- */
    --clr-deep-olive: #3F4A23;
    --clr-olive-green: #6B7A3D;
    --clr-amber: #C98A1D;
    --clr-amber-glow: rgba(201, 138, 29, 0.25);
    --clr-ivory: #FBF8F0;
    --clr-ivory-tint: #F3EADA;
    --clr-dark-olive-brown: #3A3A22;
    --clr-muted-olive: #7A7A57;
    --clr-warm-ivory: #E8DEC0;

    /* Semantic Aliases */
    --clr-bg-base: var(--clr-ivory);
    --clr-bg-surface: var(--clr-ivory-tint);
    --clr-bg-elevated: #FFFFFF;
    --clr-bg-dark: var(--clr-deep-olive);

    --clr-primary: var(--clr-olive-green);
    --clr-primary-dark: var(--clr-deep-olive);
    --clr-accent: var(--clr-amber);

    --clr-text-primary: var(--clr-deep-olive);
    --clr-text-body: var(--clr-dark-olive-brown);
    --clr-text-secondary: var(--clr-dark-olive-brown);
    --clr-text-muted: var(--clr-muted-olive);
    --clr-text-on-dark: var(--clr-warm-ivory);
    --clr-text-inverse: var(--clr-ivory);

    --clr-border: rgba(63, 74, 35, 0.15);
    --clr-border-card: rgba(63, 74, 35, 0.12);
    --clr-border-active: var(--clr-amber);
    --clr-glass-bg: rgba(251, 248, 240, 0.88);

    /* ----------------------------------------------------------------------
       2. TYPOGRAPHY — scaled-up editorial hierarchy
       ---------------------------------------------------------------------- */
    --font-family-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-family-serif: 'DM Serif Display', Georgia, 'Times New Roman', serif;

    --font-size-label: 0.8rem;       /* labels, overlines */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1.0625rem;     /* body copy — up from 1rem */
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: clamp(1.625rem, 4vw, 2.75rem);    /* H2 */
    --font-size-5xl: clamp(2.25rem, 6.5vw, 4.5rem);   /* H1 hero */

    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.1;
    --line-height-base: 1.65;
    --line-height-relaxed: 1.8;

    /* ----------------------------------------------------------------------
       3. SPACING — finer-grain tokens added
       ---------------------------------------------------------------------- */
    --space-1: 0.25rem;   /* 4px  */
    --space-2: 0.5rem;    /* 8px  */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    --space-20: 5rem;     /* 80px */
    --space-24: 6rem;     /* 96px */
    --space-32: 8rem;     /* 128px */

    /* ----------------------------------------------------------------------
       4. BORDER RADIUS & BORDERS
       ---------------------------------------------------------------------- */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* ----------------------------------------------------------------------
       5. SHADOWS & ELEVATION
       ---------------------------------------------------------------------- */
    --shadow-sm: 0 1px 3px rgba(63, 74, 35, 0.08);
    --shadow-md: 0 4px 16px rgba(63, 74, 35, 0.08);
    --shadow-lg: 0 10px 30px rgba(63, 74, 35, 0.12);
    --shadow-glow: 0 0 20px rgba(201, 138, 29, 0.25);

    /* ----------------------------------------------------------------------
       6. GRID & CONTAINERS
       ---------------------------------------------------------------------- */
    --container-width-xl: 1240px;
    --grid-gap: var(--space-8);

    /* ----------------------------------------------------------------------
       7. STATES & TRANSITIONS
       ---------------------------------------------------------------------- */
    --transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 400ms cubic-bezier(0.16, 1, 0.3, 1);
    --transition-slow: 700ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   CSS RESET & BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
    background-color: var(--clr-bg-base);
    color: var(--clr-text-body);
    font-family: var(--font-family-sans);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    position: relative;
}

/* Custom Selection */
::selection { background-color: var(--clr-amber); color: #FFFFFF; }

/* ==========================================================================
   TYPOGRAPHY ELEMENTS — editorial hierarchy
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    letter-spacing: -0.02em;
    color: var(--clr-deep-olive);
    /* No default margin-bottom — controlled per context */
}

h1 {
    font-family: var(--font-family-serif);
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-regular); /* DM Serif Display is inherently bold */
    letter-spacing: -0.03em;
}

h2 {
    font-size: var(--font-size-4xl);
    letter-spacing: -0.025em;
}

h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }

p {
    margin-bottom: var(--space-4);
    color: var(--clr-text-body);
    font-size: var(--font-size-base);
}

strong { font-weight: var(--font-weight-semibold); color: var(--clr-deep-olive); }

/* ==========================================================================
   LINKS & BUTTONS — rectangular, precision-crafted
   ========================================================================== */
a {
    color: var(--clr-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover { color: var(--clr-accent); }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    border-radius: var(--radius-sm);   /* 4px — rectangular, not pill */
    cursor: pointer;
    border: none;
    transition: all var(--transition-base);
    line-height: 1;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.btn-primary {
    background: var(--clr-deep-olive);
    color: var(--clr-warm-ivory);
    box-shadow: 0 4px 14px rgba(63, 74, 35, 0.25);
}
.btn-primary:hover {
    background: var(--clr-olive-green);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(107, 122, 61, 0.35);
    color: #FFFFFF;
}

.btn-outline {
    background: transparent;
    color: var(--clr-deep-olive);
    border: 1.5px solid var(--clr-deep-olive);
}
.btn-outline:hover {
    background: var(--clr-deep-olive);
    color: var(--clr-warm-ivory);
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(63, 74, 35, 0.2);
}

/* Secondary text-link CTA with arrow */
.btn-text {
    background: none;
    border: none;
    color: var(--clr-deep-olive);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    cursor: pointer;
    padding: var(--space-3) 0;
    transition: color var(--transition-fast);
}
.btn-text:hover { color: var(--clr-amber); }
.btn-text .arrow {
    display: inline-block;
    transition: transform var(--transition-fast);
    margin-left: var(--space-2);
}
.btn-text:hover .arrow { transform: translateX(4px); }

/* ==========================================================================
   FORMS — larger, clearer inputs
   ========================================================================== */
.form-group { margin-bottom: var(--space-6); }
.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--clr-deep-olive);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.02em;
}
.form-control {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    min-height: 48px;
    background-color: #FFFFFF;
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-md);
    color: var(--clr-dark-olive-brown);
    font-family: var(--font-family-sans);
    font-size: 16px; /* 16px minimum prevents iOS viewport auto-zoom */
    transition: all var(--transition-fast);
}
.form-control:focus {
    outline: none;
    border-color: var(--clr-amber);
    box-shadow: 0 0 0 3px var(--clr-amber-glow);
}

/* ==========================================================================
   LAYOUT & CONTAINERS (CENTRALIZED)
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-width-xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: clamp(var(--space-4), 4vw, var(--space-6));
    padding-right: clamp(var(--space-4), 4vw, var(--space-6));
}

/* Sections — generous breathing room */
.section {
    padding: var(--space-32) 0;
    position: relative;
    width: 100%;
}

/* --- Section tonal variants --- */
.section-ivory { background-color: var(--clr-ivory); }

.section-surface {
    background-color: var(--clr-ivory-tint);
    border-top: 1px solid var(--clr-border);
    border-bottom: 1px solid var(--clr-border);
}

.section-dark {
    background-color: var(--clr-deep-olive);
    color: var(--clr-warm-ivory);
}
.section-dark h2,
.section-dark h3,
.section-dark h4 { color: #FFFFFF; }
.section-dark p { color: var(--clr-warm-ivory); }
.section-dark .section-desc { color: var(--clr-warm-ivory); opacity: 0.85; }
.section-dark .section-badge {
    background: rgba(201, 138, 29, 0.18);
    border-color: rgba(201, 138, 29, 0.45);
}

/* Section Header Structure with Tab Eyebrow */
.section-header {
    text-align: center;
    max-width: 820px;
    margin: 0 auto var(--space-16) auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.section-header h2 {
    margin-bottom: var(--space-4);
    line-height: 1.2;
    color: var(--clr-deep-olive);
}
.section-dark .section-header h2 { color: #FFFFFF; }

.section-desc {
    font-size: var(--font-size-lg);
    color: var(--clr-dark-olive-brown);
    max-width: 680px;
    margin: 0 auto;
    line-height: var(--line-height-relaxed);
}

/* Section Tab Badge / Eyebrow (Amber Accent per Brand Guidelines) */
.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 6px 16px;
    border-radius: var(--radius-full);
    background: rgba(201, 138, 29, 0.12);
    border: 1px solid rgba(201, 138, 29, 0.35);
    color: var(--clr-amber);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: var(--space-5);
}
.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--clr-amber);
    box-shadow: 0 0 8px rgba(201, 138, 29, 0.6);
}

/* Keyword Footer Banner (Amber Accent per Brand Guidelines) */
.keyword-footer-banner {
    background-color: var(--clr-amber);
    color: #FFFFFF;
    padding: var(--space-4) 0;
    text-align: center;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}
.keyword-banner-inner {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}
.keyword-banner-inner span.bullet {
    opacity: 0.6;
}

.site-footer {
    background-color: var(--clr-deep-olive);
    color: var(--clr-warm-ivory);
    border-top: none;
}

.grid { display: grid; gap: var(--grid-gap); }
@media (min-width: 768px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ==========================================================================
   UTILITIES & ANIMATIONS
   ========================================================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.flex { display: flex; }
.flex-center { justify-content: center; align-items: center; }
.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; }

/* Scroll Reveal Classes (Progressive Enhancement - visible by default, animated when JS enables) */
.reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
html.js-ready .reveal {
    opacity: 0;
    transform: translateY(24px);
}
html.js-ready .reveal.active {
    opacity: 1;
    transform: translateY(0);
}
.delay-1 { transition-delay: 100ms; }
.delay-2 { transition-delay: 200ms; }
.delay-3 { transition-delay: 300ms; }
.delay-4 { transition-delay: 400ms; }
.delay-5 { transition-delay: 500ms; }

/* Global Background Effects */
.glow-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    opacity: 0.12;
    pointer-events: none;
}