/* ================================
   STACKSTORY — DESIGN SYSTEM v3
   main.css — Black & White Premium
================================ */

@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=DM+Sans:ital,wght@0,300;0,400;0,500;0,600;1,300&display=swap');

:root {
    --bg: #FAFAFA;
    --surface: #FFFFFF;
    --card: #F5F5F5;
    --border: #E8E8E8;
    --border-dark: #D0D0D0;
    --text: #0A0A0A;
    --text-secondary: #555555;
    --muted: #999999;
    --white: #FFFFFF;
    --black: #0A0A0A;
    --green: #16A34A;
    --red: #DC2626;

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

    --max-width: 1100px;
    --radius: 14px;
    --radius-sm: 8px;
    --radius-xs: 6px;

    --shadow-sm: 0 1px 4px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 24px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 48px rgba(0,0,0,0.1);
}

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

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 28px;
}

/* ---- BUTTONS ---- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 26px;
    background: var(--black);
    color: var(--white);
    font-family: var(--font-body);
    font-size: .88rem;
    font-weight: 600;
    letter-spacing: .02em;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: background .2s, transform .15s, box-shadow .2s;
    white-space: nowrap;
}
.btn-primary:hover {
    background: #222;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: .88rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--border-dark);
    cursor: pointer;
    transition: border-color .2s, color .2s, background .2s;
    white-space: nowrap;
}
.btn-ghost:hover {
    border-color: var(--text);
    color: var(--text);
    background: var(--card);
}