:root {
    --primary: #005a9c;
    --primary-hover: #004578;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --danger-bg: #fef2f2;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

body {
    margin: 0;
    padding: 0;
    font-family: Calibri, Carlito, Candara, Segoe UI, Optima, Arial, sans-serif;
    background: linear-gradient(135deg, #0f2744 0%, #005a9c 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
}

.auth-container {
    width: 100%;
    max-width: 440px;
    padding: 1.5rem;
    box-sizing: border-box;
}

.auth-card {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 2.5rem 2rem;
    text-align: center;
}
.auth-card h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.auth-card p.subtitle {
    color: var(--text-muted);
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 30px;
    text-align: left;
}

.form-group label {
    font-weight: 600;
    color: #334155;
    margin-bottom: 20px;
}

.input-control{
    width: 100%;
    border: 1px solid var(--border);
    padding: 0.7rem 1rem;
    border-radius: 8px;
    box-sizing: border-box;
    background: #f8fafc;
    transition: all 0.2s ease;
}

.input-control:focus{
    outline: none;
    border-color: var(--primary);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(0, 90, 156, 0.15);
}

.btn-submit {
    width: 100%;
    padding: 0.85rem 1.25rem;
    background: var(--primary);
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.1s ease, box-shadow 0.2s ease;
    margin-top: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 6px -1px rgba(0, 90, 156, 0.3);
}

.btn-submit:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 12px -2px rgba(0, 90, 156, 0.4);
}

.alert-error {
    background: var(--danger-bg);
    border: 1px solid #fecaca;
    color: var(--danger);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 20px;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: fadeIn 0.3s ease;
}