* { box-sizing: border-box; }

:root {
    --foreground: #1E293B;
    --muted-foreground: #64748B;
    --accent: #8B5CF6;
    --tertiary: #FBBF24;
    --border: #1E293B;
    --card: #FFFFFF;
    --danger-bg: #FEF2F2;
    --warn-bg: #FFFBEB;
    --radius-md: 16px;
    --radius-full: 9999px;
    --shadow-md: 4px 4px 0 #1E293B;
    --shadow-accent: 4px 4px 0 #8B5CF6;
    --bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

body {
    margin: 0;
    color: var(--foreground);
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

button, input { font: inherit; }
h1 { font-family: 'Outfit', system-ui, sans-serif; }

.login-page {
    min-height: 100vh;
    min-height: 100dvh;
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
    display: grid;
    place-items: center;
    background-color: #F4F0FF;
    background-image:
        radial-gradient(circle at 18% 20%, rgba(244, 114, 182, 0.28) 0 7%, transparent 7.3%),
        radial-gradient(circle at 82% 78%, rgba(251, 191, 36, 0.34) 0 9%, transparent 9.3%),
        radial-gradient(circle, rgba(139, 92, 246, 0.12) 1.2px, transparent 1.2px);
    background-size: auto, auto, 22px 22px;
}

.login-shell { width: min(100%, 480px); padding: 70px 22px 28px; }

.login-card {
    position: relative;
    padding: 70px 30px 32px;
    border: 3px solid var(--border);
    border-radius: 30px;
    background: var(--card);
    box-shadow: 10px 10px 0 var(--accent);
    text-align: center;
}

.login-brand {
    position: absolute;
    top: -42px;
    left: 50%;
    width: 94px;
    height: 78px;
    display: grid;
    place-items: center;
    border: 1.5px solid rgba(124, 58, 237, .18);
    border-radius: 26px;
    background: rgba(255,255,255,.96);
    box-shadow: 0 14px 34px rgba(30,41,59,.14);
    animation: brand-in .55s var(--bounce) both;
}

@keyframes brand-in {
    from { opacity: 0; transform: translateX(-50%) translateY(-9px) scale(.94); }
    to { opacity: 1; transform: translateX(-50%) translateY(0) scale(1); }
}

.login-brand img { display: block; width: 72px; height: 54px; }
.login-eyebrow { color: var(--accent); font: 800 11px 'Outfit', sans-serif; letter-spacing: 1.8px; }
.login-card h1 { margin: 8px 0 10px; font-size: clamp(28px, 8vw, 38px); }
.login-copy { max-width: 300px; margin: 0 auto 24px; color: var(--muted-foreground); font-size: 14px; }
.login-form { text-align: left; }
.login-form label { display: block; margin-bottom: 8px; font-size: 13px; font-weight: 700; }
.login-form input[type="password"] { width: 100%; padding: 14px 16px; border: 2px solid var(--border); border-radius: var(--radius-md); background: white; transition: .18s; }
.login-form input[type="password"]:focus { outline: none; border-color: var(--accent); box-shadow: var(--shadow-accent); }
.login-submit { width: 100%; margin-top: 18px; }

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border: 2px solid var(--border);
    border-radius: var(--radius-full);
    background: var(--accent);
    color: white;
    box-shadow: var(--shadow-md);
    font: 700 15px 'Outfit', sans-serif;
    cursor: pointer;
}

.login-alert, .login-setup { padding: 12px 14px; margin-bottom: 16px; border: 2px solid var(--border); border-radius: var(--radius-md); text-align: left; font-size: 13px; }
.login-alert { background: var(--danger-bg); color: #B91C1C; }
.login-setup { background: var(--warn-bg); color: #78350F; }
.login-setup code { font-weight: 700; }
.login-form :disabled { opacity: .55; cursor: not-allowed; }

@media (max-width: 380px) {
    .login-card { padding-inline: 22px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}