/* Common styles */
* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    background: #ffffff;
    color: #1a1a1a;
    line-height: 1.6;
    font-size: 16px;
    visibility: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.authenticated {
    visibility: visible;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    font-size: 15px;
    line-height: 1;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    outline: none;
    user-select: none;
    background: #2563eb;
    color: white;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.btn:hover:not(:disabled) {
    background: #1d4ed8;
    box-shadow: 0 4px 12px 0 rgba(37, 99, 235, 0.15);
    transform: translateY(-1px);
}

.btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.btn:disabled {
    background: #e5e7eb;
    color: #9ca3af;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-primary {
    background: #2563eb;
}

.btn-primary:hover:not(:disabled) {
    background: #1d4ed8;
}

.btn-secondary {
    background: #f3f4f6;
    color: #374151;
    border: 1px solid #d1d5db;
}

.btn-secondary:hover:not(:disabled) {
    background: #e5e7eb;
    border-color: #9ca3af;
}

.btn-danger {
    background: #dc2626;
}

.btn-danger:hover:not(:disabled) {
    background: #b91c1c;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #374151;
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 16px;
    background: #ffffff;
    color: #1f2937;
    transition: all 0.2s ease-in-out;
}

.form-control:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-control::placeholder {
    color: #9ca3af;
}

.alert {
    padding: 16px;
    margin: 20px 0;
    border-radius: 8px;
    border: 1px solid transparent;
    font-size: 14px;
    line-height: 1.5;
}

.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border-color: #fecaca;
}

.alert-success {
    background: #f0fdf4;
    color: #166534;
    border-color: #bbf7d0;
}

.alert-info {
    background: #eff6ff;
    color: #1e40af;
    border-color: #bfdbfe;
}

.ml-auto {
    margin-left: auto;
}

.card {
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    border: 1px solid #f3f4f6;
    overflow: hidden;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid #f3f4f6;
    background: #ffffff;
}

.card-body {
    padding: 24px;
}

.text-sm {
    font-size: 14px;
}

.text-xs {
    font-size: 12px;
}

.text-gray-500 {
    color: #6b7280;
}

.text-gray-600 {
    color: #4b5563;
}

.space-y-4 > * + * {
    margin-top: 16px;
}

.space-y-6 > * + * {
    margin-top: 24px;
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .card-body {
        padding: 20px;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .form-control {
        font-size: 16px; /* Prevent zoom on iOS */
    }
}