/* ============================================================
   BOWMAN WEB SERVICES — Design Tokens & Base Styles
   ============================================================
   Colors, typography, spacing, and foundational element styles.
   This file loads BEFORE all other stylesheets.
   ============================================================ */

/* ===== COLOR TOKENS ===== */
:root {
    /* Primary palette */
    --slate: #0F172A;          /* Nav, footer, headers */
    --blue: #2563EB;           /* Links */
    --blue-hover: #1D4ED8;     /* Link hover */
    --blue-light: #DBEAFE;     /* Light blue backgrounds */
    --green: #10B981;          /* Metrics, results numbers */
    --green-light: #ECFDF5;    /* Light green background */
    --amber: #F59E0B;          /* CTA buttons ONLY */
    --amber-hover: #D97706;    /* CTA button hover */
    --off-white: #F8FAFC;      /* Body background */
    --light-gray: #F1F5F9;     /* Alternating section backgrounds */
    --white: #FFFFFF;

    /* Text */
    --text: #1E293B;
    --text-mid: #475569;
    --text-light: #64748B;

    /* Borders */
    --border: #E2E8F0;
    --border-light: #F1F5F9;

    /* Shadows */
    --radius: 10px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --transition: 0.25s ease;

    /* Typography */
    --font-heading: 'DM Serif Display', Georgia, 'Times New Roman', serif;
    --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Layout */
    --container-max: 1140px;
}

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

/* ===== BODY ===== */
body {
    font-family: var(--font-body);
    color: var(--text);
    line-height: 1.7;
    background: var(--off-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== TYPOGRAPHY — Headings ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--slate);
    line-height: 1.2;
    letter-spacing: -0.01em;
}

h1 {
    font-size: 2.75rem;
    font-weight: 400; /* DM Serif Display only has 400 */
}

h2 {
    font-size: 2.25rem;
    font-weight: 400;
}

h3 {
    font-size: 1.5rem;
    font-weight: 400;
}

h4 {
    font-size: 1.25rem;
    font-weight: 400;
}

h5 {
    font-size: 1.1rem;
    font-weight: 400;
}

h6 {
    font-size: 1rem;
    font-weight: 400;
}

/* ===== LINKS ===== */
a {
    color: var(--blue);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--blue-hover);
}

/* ===== IMAGES ===== */
img {
    max-width: 100%;
    height: auto;
}

/* ===== CONTAINERS ===== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    border-radius: 8px;
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 0.95rem;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn-primary {
    background: var(--amber);
    color: var(--slate);
}

.btn-primary:hover {
    background: var(--amber-hover);
    color: var(--slate);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-secondary:hover {
    border-color: var(--white);
    color: var(--white);
}

.btn-outline {
    background: transparent;
    color: var(--blue);
    border: 2px solid var(--blue);
}

.btn-outline:hover {
    background: var(--blue);
    color: var(--white);
}

/* ===== METRIC / RESULTS CARDS ===== */
.stat-number,
.cs-card-hero,
.footer-stat {
    color: var(--green);
}

.metric-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
}

.metric-card .metric-value {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--green);
    line-height: 1.1;
}

.metric-card .metric-label {
    font-family: var(--font-body);
    color: var(--text-light);
    font-size: 0.85rem;
    margin-top: 0.25rem;
    font-weight: 500;
}

/* ===== RESULTS BOX ===== */
.results-box {
    background: var(--green-light);
    border: 1px solid var(--green);
    border-radius: var(--radius);
    padding: 1.5rem 2rem;
    margin: 1.5rem 0;
}

.results-box .results-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--green);
}

/* ===== SECTION BACKGROUNDS ===== */
section {
    padding: 5rem 0;
}

section.alt,
section:nth-of-type(even) {
    background: var(--light-gray);
}

section:nth-of-type(odd) {
    background: var(--white);
}

/* ===== SECTION HEADERS ===== */
.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    font-weight: 400;
    color: var(--slate);
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
    line-height: 1.2;
}

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

.section-subtitle {
    font-family: var(--font-body);
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 600px;
    line-height: 1.7;
}

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

/* ===== RESPONSIVE BREAKPOINTS ===== */

/* Tablet */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    section {
        padding: 3.5rem 0;
    }

    .section-title {
        font-size: 1.75rem;
    }
}

/* Mobile */
@media (max-width: 480px) {
    h1 {
        font-size: 1.65rem;
    }

    h2 {
        font-size: 1.5rem;
    }
}