/* Shared foundation: variables, reset, key-page components.
   Loaded BEFORE theme-overrides.css; page-local CSS loads last and wins. */

:root {
    --font-head: 'Plus Jakarta Sans', 'Noto Sans SC', sans-serif;
    --font-body: 'Noto Sans SC', 'PingFang SC', sans-serif;
    --font-mono: 'Source Code Pro', monospace;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
    --hue: 35, 80%, 60%;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed; inset: 0;
    background-image: radial-gradient(circle, var(--dot) 1px, transparent 1px);
    background-size: 28px 28px;
    pointer-events: none; z-index: 0;
}

.screen {
    position: fixed; inset: 0;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    z-index: 10;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s var(--ease);
}
.screen.active { opacity: 1; pointer-events: all; }

/* ===== Key entry components ===== */
.key-input-wrap { position: relative; margin-bottom: 1rem; }

.key-input {
    width: 100%; padding: 16px 20px;
    background: var(--glass); border: 1px solid var(--glass-b);
    border-radius: 10px; color: var(--text);
    font-family: var(--font-mono); font-size: 1rem;
    letter-spacing: 0.2rem; text-align: center;
    text-transform: uppercase; outline: none;
    transition: border-color 0.3s;
}
.key-input:focus { border-color: var(--accent); }
.key-input::placeholder { color: var(--text-3); letter-spacing: 0.15rem; font-size: 0.8rem; }

.key-btn {
    width: 100%; padding: 14px;
    background: var(--accent); border: none; border-radius: 10px;
    color: var(--bg); font-family: var(--font-head);
    font-size: 0.8rem; font-weight: 700;
    letter-spacing: 0.1rem; cursor: pointer;
    transition: all 0.3s;
}
.key-btn:hover { opacity: 0.9; transform: translateY(-1px); }
.key-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.key-error { font-family: var(--font-mono); font-size: 0.65rem; color: #ff6347; margin-top: 0.8rem; min-height: 1rem; }

.key-shop { margin-top: 1.5rem; font-family: var(--font-mono); font-size: 0.78rem; line-height: 1.6; color: var(--text-2); }
.key-shop a { color: var(--accent); text-decoration: none; }
.key-shop a:hover { text-decoration: underline; }

.key-legal { margin-top: 1.5rem; font-size: 0.6rem; color: var(--text-3); line-height: 1.6; opacity: 0.7; }
.key-legal a { color: var(--text-3); text-decoration: underline; text-underline-offset: 2px; }
.key-legal a:hover { color: var(--text-2); }