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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #0f172a 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-wrapper {
    width: 100%;
    max-width: 400px;
}

.login-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 40px 32px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    text-align: center;
}

.login-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, #1e3a5f, #2563eb);
    color: white;
    margin-bottom: 16px;
}

h1 {
    font-size: 22px;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 4px;
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 14px;
    color: #64748b;
    margin-bottom: 28px;
}

.error-box {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 8px;
    margin-bottom: 20px;
    color: #dc2626;
    font-size: 13px;
}

form { text-align: left; }

label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 6px;
    font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
}

.input-wrapper {
    position: relative;
    margin-bottom: 20px;
}

.input-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
}

input[type="password"] {
    width: 100%;
    padding: 10px 12px 10px 38px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 14px;
    color: #1e293b;
    background: #f8fafc;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

input[type="password"]:focus {
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

input[type="password"]::placeholder {
    color: #94a3b8;
}

button[type="submit"] {
    width: 100%;
    padding: 11px 16px;
    background: linear-gradient(135deg, #1e3a5f, #2563eb);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.15s, box-shadow 0.15s;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

button[type="submit"]:hover:not(:disabled) {
    opacity: 0.92;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

button[type="submit"]:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#btn-loading {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.footer-note {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid #e2e8f0;
    font-size: 11px;
    color: #94a3b8;
    letter-spacing: 0.05em;
    font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
}