:root {
    --brand-primary: #7c3aed;
    --brand-primary-dark: #6d28d9;
    --text: #111827;
    --muted: #6b7280;
    --card-bg: rgba(255, 255, 255, 0.86);
    --input-bg: #ffffff;
    --input-border: #e5e7eb;
    --bg-from: #faf5ff;
    --bg-to: #f5f3ff;
}

body {
    margin: 0;
    padding: 0;
    font-family: "Assistant", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    background: linear-gradient(180deg, var(--bg-from), var(--bg-to));
    color: var(--text);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.center-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.branding {
    position: absolute;
    top: 32px;
    left: 32px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--brand-primary);
}

.brand-word {
    font-weight: 700;
    letter-spacing: 0.5px;
}

.login-card {
    background: var(--card-bg);
    backdrop-filter: saturate(180%) blur(12px);
    padding: 36px 32px;
    border-radius: 24px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 10px 30px rgba(16, 24, 40, 0.1);
    animation: fadeIn 0.4s ease;
    border: 1px solid #f3f4f6;
}

.title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    text-align: center;
    color: var(--text);
}

.subtitle {
    font-size: 15px;
    color: var(--muted);
    margin-bottom: 28px;
    text-align: center;
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    font-size: 14px;
    opacity: 0.85;
}

.input-group input {
    margin-top: 6px;
    width: 100%;
    padding: 12px 14px;
    border-radius: 14px;
    border: 1px solid var(--input-border);
    background: var(--input-bg);
    color: var(--text);
    font-size: 16px;
    outline: none;
    transition: 0.2s;
}

.input-group input:focus {
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.18);
}

.login-btn {
    width: 100%;
    padding: 14px;
    background: var(--brand-primary);
    border: none;
    border-radius: 14px;
    color: white;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: 0.2s;
    margin-top: 10px;
}

.login-btn:hover {
    background: var(--brand-primary-dark);
    transform: translateY(-1px);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.error-message {
    background-color: #fef2f2;
    color: #b91c1c;
    border-radius: 12px;
    padding: 10px 12px;
    margin-bottom: 16px;
    font-size: 14px;
    border: 1px solid #fee2e2;
}

.mobile-close {
    position: fixed;
    top: 12px;
    right: 12px;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    border: 1px solid #e5e7eb;
    background: #ffffff;
    color: var(--text);
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    cursor: pointer;
    box-shadow: 0 6px 16px rgba(0,0,0,0.08);
}

@media (max-width: 767px) {
    .mobile-close { display: flex; }
}