/* =============================================================================
   BASE.CSS
   Shared tokens, typography, buttons, and low-level surfaces.
   ============================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@600;700;800&family=JetBrains+Mono:wght@500;700&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    width: 100%;
    overflow-x: clip;
    scroll-behavior: smooth;
}

:root {
    --surface-0: #ffffff;
    --surface-1: #f5f7fa;
    --surface-2: #edf2f7;
    --surface-3: #dde6f0;
    --navy: #081b36;
    --navy-soft: #102847;
    --navy-deep: #051227;

    --text-primary: #0f172a;
    --text-secondary: #425066;
    --text-muted: #68768d;
    --text-on-dark: rgba(255, 255, 255, 0.92);
    --text-on-dark-soft: rgba(255, 255, 255, 0.7);

    --border-subtle: #d7e2ee;
    --border-strong: #b7c7da;

    --accent: #0066ff;
    --accent-strong: #1e40af;
    --accent-dark: #004fc5;
    --accent-soft: rgba(0, 102, 255, 0.08);
    --accent-line: rgba(0, 102, 255, 0.2);

    --shadow-sm: 0 10px 24px rgba(8, 27, 54, 0.05);
    --shadow-md: 0 20px 54px rgba(8, 27, 54, 0.08);
    --shadow-lg: 0 30px 80px rgba(8, 27, 54, 0.12);

    --nav-height: 84px;
    --section-spacing: 112px;
}

body {
    min-width: 320px;
    background:
        radial-gradient(circle at top left, rgba(0, 102, 255, 0.08) 0%, transparent 32%),
        linear-gradient(180deg, #ffffff 0%, #fbfcfe 100%);
    color: var(--text-secondary);
    font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: clip;
}

.super-grid {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(117, 140, 168, 0.12) 1px, transparent 1px),
        linear-gradient(90deg, rgba(117, 140, 168, 0.12) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(circle at center, black 28%, transparent 82%);
}

img {
    display: block;
    max-width: 100%;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--text-primary);
    font-family: 'Barlow Condensed', 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
    line-height: 0.98;
    letter-spacing: 0.02em;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

button,
input,
select,
textarea {
    font: inherit;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 48px;
    padding: 0 24px;
    border-radius: 8px;
    font-size: 0.94rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.btn-primary {
    border: 1px solid var(--accent-dark);
    background: linear-gradient(180deg, #0d73ff 0%, var(--accent) 100%);
    color: #ffffff;
    box-shadow: 0 18px 30px rgba(0, 102, 255, 0.18);
}

.btn-primary:hover {
    transform: translateY(-2px);
    background: linear-gradient(180deg, #0b6df3 0%, var(--accent-dark) 100%);
    box-shadow: 0 20px 34px rgba(0, 102, 255, 0.24);
}

.btn-secondary {
    border: 1px solid var(--border-strong);
    background: rgba(255, 255, 255, 0.88);
    color: var(--text-primary);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    border-color: var(--accent-line);
    background: #ffffff;
}

.btn-arrow {
    line-height: 1;
    transition: transform 0.18s ease;
}

.btn-primary:hover .btn-arrow,
.btn-secondary:hover .btn-arrow {
    transform: translateX(3px);
}

.card-surface {
    background: var(--surface-0);
    border: 1px solid var(--border-subtle);
    border-radius: 14px;
    box-shadow: var(--shadow-sm);
}

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

@media (max-width: 768px) {
    .btn-primary,
    .btn-secondary {
        width: 100%;
    }
}