/* Up4 Design System — Web */
/* Font loaded via <link> in HTML for faster rendering */

:root {
    /* Background */
    --bg-page: #f8f6f6;
    --bg-card: #ffffff;
    --bg-elevated: #ffffff;
    --bg-surface: #f0edec;
    --bg-dark: #181211;

    /* Accent */
    --coral: #ef6457;
    --coral-glow: rgba(239, 100, 87, 0.1);
    --coral-soft: #ff7b6e;
    --amber: #e8985a;

    /* Glass (light theme) */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.07);
    --glass-hover: rgba(255, 255, 255, 0.9);
    --rim: rgba(255, 255, 255, 0.95);

    /* Text (light theme) */
    --text-primary: #1a1210;
    --text-secondary: #6b5e5c;
    --text-tertiary: #9e9290;

    /* Spacing (8px base) */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;
    --spacing-4xl: 96px;

    /* Radius */
    --radius-sm: 10px;
    --radius: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 100px;

    /* Font */
    --font-display: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;

    /* Backward-compat aliases (legal/verify pages) */
    --spacing-xxl: var(--spacing-2xl);
    --glass-white: var(--glass-bg);
    --rim-light: var(--rim);
    --coffee-dark: var(--bg-dark);
    --coffee-light: var(--bg-dark);
}

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

html { scroll-behavior: smooth; overflow-x: hidden; }

body {
    font-family: var(--font-body);
    font-weight: 400;
    background: var(--bg-page);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::-webkit-scrollbar { display: none; }
body { -ms-overflow-style: none; scrollbar-width: none; }

img { max-width: 100%; display: block; }
a { color: var(--coral); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Layout ────────────────────────────────── */
.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ── Typography ────────────────────────────── */
.text-display {
    font-family: var(--font-display);
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
}

.text-title {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.text-headline {
    font-family: var(--font-display);
    font-size: clamp(22px, 3vw, 32px);
    font-weight: 700;
    line-height: 1.25;
}

.text-body {
    font-size: 17px;
    font-weight: 400;
    line-height: 1.65;
}

.text-body-lg {
    font-size: 19px;
    font-weight: 400;
    line-height: 1.6;
}

.text-small { font-size: 14px; font-weight: 400; }

.text-label {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }

/* ── Glass Card (light theme) ──────────────── */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
    transition: box-shadow 0.25s ease, border-color 0.25s ease;
}

.glass-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.07);
    border-color: rgba(0, 0, 0, 0.1);
}

/* ── Buttons ───────────────────────────────── */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--coral);
    color: #fff;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 700;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(239, 100, 87, 0.35);
    text-decoration: none;
}

.btn-primary:active { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }

/* ── Input ─────────────────────────────────── */
.input {
    width: 100%;
    padding: 14px 18px;
    font-size: 15px;
    font-family: var(--font-body);
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.input::placeholder { color: var(--text-tertiary); }

.input:focus {
    border-color: var(--coral);
    box-shadow: 0 0 0 3px var(--coral-glow);
}

/* ── Scroll Reveal ─────────────────────────── */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.in-view {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }

/* ── Keyframes ─────────────────────────────── */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

@keyframes pulse-ring {
    0% { transform: scale(1); opacity: 0.4; }
    100% { transform: scale(1.8); opacity: 0; }
}

@keyframes drift {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(40px, -60px) scale(1.05); }
    50% { transform: translate(-30px, 40px) scale(0.95); }
    75% { transform: translate(50px, 20px) scale(1.02); }
}

@keyframes fade-in-up {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}