/* ==========================================================================
   1. TOKENS
   Brand colors (blues/oranges below) are sampled directly from the live
   boost.systems site and are FIXED — do not change these.
   Everything else here (spacing, radius, shadow, type scale, layout widths)
   is a free variable — tune these to restyle the site without touching
   brand colors or the logo.
   ========================================================================== */
:root {
    /* --- Brand colors: FIXED, sampled directly from boost.systems, do not modify --- */
    --color-brand-blue: #244c9c;   /* headings, hero copy, primary brand blue */
    --color-nav-blue: #2f5283;     /* inactive nav link text */
    --color-accent: #d85a41;       /* buttons, active nav link, CTA (site's UI orange) */
    --color-accent-hover: #c2513a;
    --color-bg: #f8f9fa;           /* page background */
    --color-white: #ffffff;

    /* --- Text / neutral grays: FIXED --- */
    --color-text: #244c9c;
    --color-text-muted: #4d6da0;
    --color-text-soft: #6d89b8;
    --color-border: #e0e0f0;
    --color-input-border: #ccccdd;
    --color-footer-text: #2f5283;
    --color-footer-link: #d85a41;

    /* --- Layout: free to adjust --- */
    --container-width: 1200px;
    --header-height: 64px;

    /* --- Spacing scale: free to adjust --- */
    --space-xs: 0.4rem;
    --space-sm: 0.75rem;
    --space-md: 1.25rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;

    /* --- Radius / shadow: free to adjust --- */
    --radius-sm: 4px;
    --radius-md: 8px;
    --shadow-header: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.06);

    /* --- Typography scale: free to adjust --- */
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
}

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

/* ==========================================================================
   3. BASE
   ========================================================================== */
body {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ==========================================================================
   4. LAYOUT PRIMITIVES (header / nav / main / footer)
   ========================================================================== */
header {
    background-color: var(--color-white);
    color: var(--color-nav-blue);
    padding: 0 var(--space-lg);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--color-border);
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    max-width: var(--container-width);
    margin: 0 auto;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 36px;
    width: auto;
    display: block;
}

nav ul {
    list-style: none;
    display: flex;
    gap: var(--space-lg);
}

nav ul li a {
    color: var(--color-nav-blue);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    transition: color 0.2s;
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--color-accent);
}

main {
    flex: 1;
    max-width: var(--container-width);
    width: 100%;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
}

footer {
    background-color: var(--color-bg);
    color: var(--color-footer-text);
    text-align: center;
    padding: var(--space-md) var(--space-lg);
    font-size: 0.875rem;
    border-top: 1px solid var(--color-border);
}

footer a {
    color: var(--color-footer-link);
    font-weight: 600;
}


footer a:hover {
    color: var(--color-white);
}

/* ==========================================================================
   5. TYPOGRAPHY
   ========================================================================== */
h1 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    margin-top: var(--space-lg);
    color: var(--color-text);
}

h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    margin-top: var(--space-md);
    color: var(--color-text);
}

p {
    margin-bottom: var(--space-md);
    color: var(--color-text-muted);
}

a {
    color: var(--color-accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ==========================================================================
   6. COMPONENTS
   ========================================================================== */

/* Button */
.btn {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    background-color: var(--color-accent);
    color: var(--color-white);
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-decoration: none;
    transition: background-color 0.2s;
}

.btn:hover {
    background-color: var(--color-accent-hover);
    text-decoration: none;
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    box-shadow: var(--shadow-card);
}

.card h3 {
    margin-top: 0;
}

/* Section wrapper */
.section {
    margin-bottom: var(--space-xl);
}

/* Contact form */
.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--space-xs);
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--color-input-border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    background: var(--color-white);
    color: var(--color-text);
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

form .btn {
    margin-top: var(--space-xs);
}

/* ==========================================================================
   7. PAGE-SPECIFIC
   ========================================================================== */

/* Teaser callout (e.g. next-version announcement) */
.teaser {
    border-left: 4px solid var(--color-accent);
    background-color: var(--color-white);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
}

.teaser h2 {
    margin-top: 0;
}

/* Prose content (terms, privacy, about) */
.prose h2 {
    margin-top: 2.5rem;
}

.prose ul,
.prose ol {
    margin: var(--space-xs) 0 var(--space-md) 1.5rem;
    color: var(--color-text-muted);
}

.prose li {
    margin-bottom: var(--space-xs);
}

/* Form feedback banners */
.form-feedback {
    max-width: 560px;
    margin-top: 2rem;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: 500;
}

.form-feedback--success {
    background-color: #eaf6ee;
    border: 1px solid #a3d9b1;
    color: #1e6b38;
}

.form-feedback--error {
    background-color: #fdf0ee;
    border: 1px solid #f0b0a4;
    color: #8b2e20;
}