/* ============================================
   ALVI - Shared Components v2
   Modal, Toast, Loader, Footer, Empty State
   ============================================ */

/* ── Modal ── */
.modal-overlay {
    position: fixed; inset: 0; z-index: var(--z-modal);
    background: rgba(0,0,0,.5);
    backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    display: flex; align-items: center; justify-content: center;
    padding: var(--space-5);
    animation: fadeIn .15s var(--ease);
}
.modal {
    background: var(--white);
    border-radius: var(--radius-2xl);
    width: 100%; max-width: 520px;
    max-height: 90vh; overflow-y: auto;
    box-shadow: var(--shadow-2xl);
    border: 1px solid var(--gray-200);
    animation: modalIn .25s var(--ease-spring);
}
.modal-lg { max-width: 720px; }
.modal-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--gray-100);
}
.modal-header h3 { font-family: var(--font-display); font-size: var(--text-xl); }
.modal-close {
    width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
    border: none; background: var(--gray-100);
    border-radius: var(--radius-full);
    font-size: 18px; cursor: pointer;
    color: var(--gray-500);
    transition: all var(--transition);
}
.modal-close:hover { background: var(--gray-900); color: var(--white); }
.modal-body { padding: var(--space-6); }
.modal-footer {
    display: flex; gap: var(--space-3); justify-content: flex-end;
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--gray-100);
    background: var(--gray-50);
    border-radius: 0 0 var(--radius-2xl) var(--radius-2xl);
}

/* ── Confirm dialog ── */
.confirm-dialog { text-align: center; padding: var(--space-4) 0 var(--space-2); }
.confirm-icon { font-size: 48px; margin-bottom: var(--space-4); }
.confirm-message { color: var(--gray-600); line-height: 1.7; }

/* ── Toast Notifications ── */
.notification-container {
    position: fixed;
    top: calc(var(--header-height) + 16px);
    right: 16px;
    z-index: var(--z-toast);
    display: flex; flex-direction: column; gap: var(--space-2);
    max-width: 380px; width: 100%;
    pointer-events: none;
}
.toast {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-4) var(--space-5);
    box-shadow: var(--shadow-lg);
    display: flex; align-items: flex-start; gap: var(--space-3);
    border-left: 3px solid var(--gold);
    animation: toastIn .3s var(--ease-spring);
    position: relative;
    pointer-events: auto;
}
.toast-success { border-color: var(--success); }
.toast-error { border-color: var(--danger); }
.toast-warning { border-color: var(--warning); }
.toast-info { border-color: var(--info); }
.toast-icon { font-size: 20px; flex-shrink: 0; line-height: 1; }
.toast-content { flex: 1; min-width: 0; }
.toast-title { font-weight: 700; font-size: var(--text-sm); color: var(--gray-900); margin-bottom: 2px; }
.toast-message { font-size: var(--text-xs); color: var(--gray-500); line-height: 1.4; }
.toast-close {
    position: absolute; top: 8px; right: 8px;
    background: none; border: none;
    color: var(--gray-400); cursor: pointer;
    font-size: 16px; padding: 4px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}
.toast-close:hover { background: var(--gray-100); color: var(--gray-700); }
.toast.removing { animation: toastOut .25s var(--ease) forwards; }

/* ── Loader / Spinner ── */
.page-loader {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    padding: var(--space-20) 0;
}
.loader { display: flex; flex-direction: column; align-items: center; gap: var(--space-4); }
.spinner {
    width: 40px; height: 40px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--gold);
    border-radius: 50%;
    animation: spin .7s linear infinite;
}
.spinner-sm { width: 18px; height: 18px; border-width: 2px; }
.spinner-inline { display: inline-block; vertical-align: middle; margin-right: 6px; }
.loader-text { color: var(--gray-500); font-size: var(--text-sm); font-weight: 500; }
.loader-overlay {
    position: fixed; inset: 0; z-index: 999;
    background: rgba(255,255,255,.8);
    backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center;
}

/* ── Footer ── */
.footer {
    margin-top: auto;
    padding: var(--space-6) 0;
    background: var(--white);
    border-top: 1px solid var(--gray-100);
    color: var(--gray-500);
    font-size: var(--text-xs);
}
.footer-inner {
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: var(--space-4);
}
.footer-brand { display: flex; align-items: center; gap: var(--space-3); }
.footer-brand .footer-logo { height: 20px; opacity: .4; transition: opacity var(--transition); }
.footer-brand:hover .footer-logo { opacity: .7; }
.footer-brand span { color: var(--gray-700); font-weight: 700; font-size: var(--text-sm); }
.footer-links { display: flex; gap: var(--space-4); }
.footer-copy { color: var(--gray-400); }
.footer a { color: var(--gray-500); font-weight: 500; }
.footer a:hover { color: var(--gold); }
@media (max-width: 640px) {
    .footer-inner { flex-direction: column; text-align: center; }
}

/* ── Empty State ── */
.empty-state { text-align: center; padding: var(--space-20) var(--space-8); }
.empty-state-icon { font-size: 64px; margin-bottom: var(--space-5); opacity: .6; }
.empty-state h3 { color: var(--gray-700); margin-bottom: var(--space-2); font-size: var(--text-xl); }
.empty-state p { color: var(--gray-500); margin-bottom: var(--space-6); max-width: 360px; margin-left: auto; margin-right: auto; font-size: var(--text-sm); }

/* ── Skeleton ── */
.skeleton {
    background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-200) 50%, var(--gray-100) 75%);
    background-size: 200% 100%;
    border-radius: var(--radius);
    animation: shimmer 1.5s infinite;
}
.skeleton-text { height: 14px; margin-bottom: var(--space-2); border-radius: var(--radius-sm); }
.skeleton-block { height: 120px; border-radius: var(--radius-lg); }

/* ── Animations ── */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeOut { from { opacity: 1; } to { opacity: 0; } }
@keyframes modalIn { from { opacity: 0; transform: scale(.95) translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes toastIn { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: none; } }
@keyframes toastOut { to { opacity: 0; transform: translateX(40px) scale(.96); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes shimmer { to { background-position: -200% 0; } }
@keyframes scaleIn { from { transform: scale(0); } to { transform: scale(1); } }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .4; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }
@keyframes slideDown { from { opacity: 0; transform: translateY(-12px); } to { opacity: 1; transform: none; } }
@keyframes slideIn { from { opacity: 0; transform: translateX(-16px); } to { opacity: 1; transform: none; } }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
@keyframes goldShine { 0% { background-position: -200% center; } 100% { background-position: 200% center; } }