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

:root {
    --primary: #667eea;
    --secondary: #764ba2;
    --success: #10b981;
    --danger: #ef4444;
    --dark: #1f2937;
    --light: #f9fafb;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 450px;
    width: 100%;
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo {
    text-align: center;
    margin-bottom: 30px;
}

.logo h1 {
    color: var(--primary);
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 5px;
}

.logo p {
    color: #6b7280;
    font-size: 14px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--dark);
    font-weight: 500;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s ease;
    outline: none;
}

.form-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #f3f4f6;
    color: var(--dark);
    margin-top: 10px;
}

.btn-secondary:hover {
    background: #e5e7eb;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(239, 68, 68, 0.4);
}

.alert {
    padding: 14px 18px;
    border-radius: 12px;
    margin-bottom: 20px;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success);
}

.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger);
}

.links {
    text-align: center;
    margin-top: 20px;
}

.links a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.links a:hover {
    color: var(--secondary);
}

.dashboard-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 30px;
    border-radius: 15px;
    color: white;
    margin-bottom: 30px;
    text-align: center;
}

.dashboard-header h2 {
    font-size: 28px;
    margin-bottom: 8px;
}

.dashboard-header p {
    opacity: 0.9;
    font-size: 16px;
}

.info-card {
    background: #f9fafb;
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 15px;
    border-left: 4px solid var(--primary);
}

.info-card h3 {
    color: var(--dark);
    font-size: 14px;
    margin-bottom: 5px;
    opacity: 0.7;
}

.info-card p {
    color: var(--dark);
    font-size: 18px;
    font-weight: 600;
}

.pin-input {
    text-align: center;
    font-size: 24px;
    letter-spacing: 8px;
    font-weight: 600;
}

/* Settings Page */
.settings-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    padding: 30px;
    border-radius: 15px;
    color: white;
    margin-bottom: 30px;
    text-align: center;
}

.settings-header h2 {
    font-size: 28px;
    margin-bottom: 8px;
}

.settings-header p {
    opacity: 0.9;
    font-size: 16px;
}

.settings-form {
    width: 100%;
}

.form-section {
    margin-bottom: 30px;
    padding: 25px;
    background: #f9fafb;
    border-radius: 12px;
}

.form-section h3 {
    color: var(--dark);
    font-size: 18px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e5e7eb;
}

.form-group small {
    display: block;
    color: #6b7280;
    font-size: 12px;
    margin-top: 5px;
}

.form-group input:disabled {
    background: #e5e7eb;
    cursor: not-allowed;
    opacity: 0.7;
}

.warning-text {
    background: #fef3c7;
    color: #92400e;
    padding: 12px;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 15px;
    border-left: 4px solid #f59e0b;
}

.form-actions {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.form-actions .btn {
    flex: 1;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger);
}

/* Dashboard Actions */
.dashboard-actions {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.dashboard-actions .btn {
    flex: 1;
}

@media (max-width: 500px) {
    .container {
        padding: 30px 20px;
    }

    .logo h1 {
        font-size: 28px;
    }

    .form-actions {
        flex-direction: column;
    }

    .dashboard-actions {
        flex-direction: column;
    }
}