/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 10px 20px;
    font-size: var(--font-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    line-height: 1.4;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary);
    color: white;
}
.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
}

.btn-secondary {
    background: white;
    color: var(--gray-700);
    border-color: var(--gray-300);
}
.btn-secondary:hover:not(:disabled) {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.btn-danger {
    background: var(--danger);
    color: white;
}
.btn-danger:hover:not(:disabled) {
    background: #DC2626;
}

.btn-ghost {
    background: transparent;
    color: var(--gray-600);
    border: none;
    padding: var(--space-sm) var(--space-md);
}
.btn-ghost:hover:not(:disabled) {
    background: var(--gray-100);
    color: var(--gray-800);
}

.btn-sm {
    padding: 6px 12px;
    font-size: var(--font-xs);
}

.btn-lg {
    padding: 12px 28px;
    font-size: var(--font-base);
}

.btn-block {
    width: 100%;
}

/* ========== Forms ========== */
.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    font-size: var(--font-sm);
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: var(--space-xs);
}

.form-input {
    width: 100%;
    padding: 10px 14px;
    font-size: var(--font-sm);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background: white;
    color: var(--gray-800);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-50);
}

.form-input::placeholder {
    color: var(--gray-400);
}

.form-input.error {
    border-color: var(--danger);
}

.form-error {
    font-size: var(--font-xs);
    color: var(--danger);
    margin-top: var(--space-xs);
}

.form-divider {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin: var(--space-lg) 0;
    color: var(--gray-400);
    font-size: var(--font-sm);
}

.form-divider::before,
.form-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--gray-200);
}

/* ========== Cards ========== */
.card {
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition), transform var(--transition);
}

.card-hover:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-body {
    padding: var(--space-lg);
}

.card-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--gray-100);
}

.card-footer {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--gray-100);
    background: var(--gray-50);
}

/* ========== Badges ========== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    font-size: var(--font-xs);
    font-weight: 500;
    border-radius: var(--radius-full);
}

.badge-success {
    background: var(--success-light);
    color: #065F46;
}

.badge-warning {
    background: var(--warning-light);
    color: #92400E;
}

.badge-danger {
    background: var(--danger-light);
    color: #991B1B;
}

.badge-info {
    background: var(--info-light);
    color: #1E40AF;
}

.badge-primary {
    background: var(--primary-100);
    color: var(--primary-dark);
}

.badge-neutral {
    background: var(--gray-100);
    color: var(--gray-600);
}

/* ========== App Card ========== */
.app-card {
    cursor: pointer;
    position: relative;
}

.app-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    margin-bottom: var(--space-md);
}

.app-card-title {
    font-size: var(--font-lg);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.app-card-desc {
    font-size: var(--font-sm);
    color: var(--gray-500);
    margin-bottom: var(--space-md);
}

.app-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.app-card.coming-soon {
    opacity: 0.7;
}

.app-card.coming-soon .card-body::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-lg);
}

/* ========== Plan Card ========== */
.plan-card {
    display: flex;
    flex-direction: column;
    text-align: center;
    position: relative;
}

.plan-card.featured {
    border-color: var(--primary);
    border-width: 2px;
    box-shadow: var(--shadow-md);
}

.plan-featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 2px 16px;
    border-radius: var(--radius-full);
    font-size: var(--font-xs);
    font-weight: 600;
}

.plan-card .card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.plan-name {
    font-size: var(--font-lg);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.plan-desc {
    font-size: var(--font-sm);
    color: var(--gray-500);
    margin-bottom: var(--space-lg);
}

.plan-price {
    font-size: var(--font-3xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-xs);
}

.plan-price span {
    font-size: var(--font-sm);
    font-weight: 400;
    color: var(--gray-500);
}

.plan-annual {
    font-size: var(--font-xs);
    color: var(--gray-400);
    margin-bottom: var(--space-lg);
}

.plan-features {
    list-style: none;
    text-align: left;
    margin-bottom: var(--space-lg);
    flex: 1;
}

.plan-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    font-size: var(--font-sm);
    color: var(--gray-600);
    padding: var(--space-xs) 0;
}

.plan-features li::before {
    content: '\2713';
    color: var(--success);
    font-weight: 700;
    flex-shrink: 0;
}

/* ========== Grid ========== */
.grid {
    display: grid;
    gap: var(--space-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .grid-4, .grid-3, .grid-2 {
        grid-template-columns: 1fr;
    }
}

/* ========== Toast ========== */
.toast-container {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    background: white;
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--gray-300);
    animation: slideIn 0.3s ease;
    min-width: 300px;
    max-width: 450px;
    font-size: var(--font-sm);
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }
.toast.info { border-left-color: var(--info); }

.toast-close {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    font-size: 18px;
    padding: 0;
    line-height: 1;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* ========== Modal ========== */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    animation: fadeIn 0.2s ease;
}

.modal {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    animation: scaleIn 0.2s ease;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--gray-100);
}

.modal-header h3 {
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: var(--gray-400);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.modal-body {
    padding: var(--space-lg);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--gray-100);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes scaleIn {
    from {
        transform: scale(0.95);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* ========== Empty State ========== */
.empty-state {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--gray-500);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.empty-state h3 {
    color: var(--gray-700);
    margin-bottom: var(--space-sm);
}

.empty-state p {
    font-size: var(--font-sm);
    margin-bottom: var(--space-lg);
}

/* ========== Loading ========== */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

.spinner-lg {
    width: 40px;
    height: 40px;
    border-width: 3px;
}

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

.page-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
}

/* ========== Subscription Card ========== */
.sub-card {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-lg);
}

.sub-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.sub-card-info {
    flex: 1;
}

.sub-card-info h4 {
    margin-bottom: 2px;
}

.sub-card-info p {
    font-size: var(--font-sm);
    color: var(--gray-500);
}

.sub-card-actions {
    display: flex;
    gap: var(--space-sm);
}

@media (max-width: 640px) {
    .sub-card {
        flex-direction: column;
        align-items: flex-start;
    }
    .sub-card-actions {
        width: 100%;
    }
    .sub-card-actions .btn {
        flex: 1;
    }
}