/* ═══════════════════════════════════════════════════════════
   ADMIN AUTH STYLES - Premium Secure Access
   ══════════════════════════════════════════════════════════ */

:root {
    --auth-bg: #fcfaf6;
    --auth-brand: #1a1a1a;
    --auth-accent: #2563eb;
    --auth-text: #1e293b;
    --auth-text-dim: #64748b;
    --auth-border: #e2e8f0;
}

[data-theme="dark"] {
    --auth-bg: #0a0a0c;
    --auth-brand: #000000;
    --auth-accent: #3b82f6;
    --auth-text: #f8fafc;
    --auth-text-dim: #94a3b8;
    --auth-border: #1e293b;
}

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

body.auth-body {
    font-family: 'Inter', sans-serif;
    background: var(--auth-bg);
    color: var(--auth-text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.auth-container {
    width: 100%;
    max-width: 1100px;
    min-height: 640px;
    background: var(--auth-bg);
    border: 1px solid var(--auth-border);
    border-radius: 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    overflow: hidden;
    box-shadow: 0 40px 100px -20px rgba(0,0,0,0.1);
}

/* ── Brand Side ── */
.auth-side.brand-side {
    background: var(--auth-brand);
    color: #fff;
    padding: 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.brand-side::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 60%);
    pointer-events: none;
}

.brand-side .kicker {
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--auth-accent);
    margin-bottom: 24px;
}

.brand-side h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 32px;
}

.brand-side p {
    font-size: 1.1rem;
    line-height: 1.6;
    opacity: 0.7;
    max-width: 320px;
}

/* ── Form Side ── */
.auth-side.form-side {
    padding: 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.form-side h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--auth-text);
    margin-bottom: 12px;
}

.subtle {
    color: var(--auth-text-dim);
    font-size: 1rem;
    margin-bottom: 48px;
}

.input-wrapper {
    margin-bottom: 24px;
}

.input-wrapper label {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--auth-text-dim);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.input-wrapper input {
    width: 100%;
    background: var(--auth-bg);
    border: 2px solid var(--auth-border);
    border-radius: 16px;
    padding: 16px 20px;
    font-size: 1rem;
    color: var(--auth-text);
    outline: none;
    transition: all 0.3s ease;
}

.input-wrapper input:focus {
    border-color: var(--auth-accent);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.btn-login {
    width: 100%;
    background: var(--auth-accent);
    color: #fff;
    border: none;
    border-radius: 16px;
    padding: 18px;
    font-size: 1rem;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 12px;
}

.btn-login:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(37, 99, 235, 0.4);
}

.auth-footer {
    margin-top: 40px;
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
}

.auth-footer a {
    color: var(--auth-accent);
    text-decoration: none;
    font-weight: 600;
}

.auth-footer a:hover { text-decoration: underline; }

/* ── Alerts ── */
.alert {
    padding: 16px 24px;
    border-radius: 16px;
    margin-bottom: 32px;
    font-size: 0.95rem;
    font-weight: 600;
}
.alert.error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert.success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }

@media (max-width: 900px) {
    .auth-container { grid-template-columns: 1fr; border-radius: 32px; }
    .brand-side { display: none; }
    .form-side { padding: 48px 32px; }
}

/* Animations */
.reveal-text {
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-text.active { opacity: 1; transform: translateX(0); }

.reveal-container {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-container.active { opacity: 1; transform: translateY(0); }