/* YN Tools - Custom Styles */

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes slideInRight {
    from { opacity: 0; transform: translateX(100%); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes slideOutRight {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0; transform: translateX(100%); }
}
@keyframes pulse-border {
    0%, 100% { box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.3); }
    50% { box-shadow: 0 0 0 6px rgba(79, 70, 229, 0); }
}

.animate-fade-in { animation: fadeIn 0.3s ease-out; }
.animate-fade-in-up { animation: fadeInUp 0.5s ease-out; }
.animate-slide-down { animation: slideDown 0.2s ease-out; }
.animate-slide-in-right { animation: slideInRight 0.3s ease-out; }
.animate-slide-out-right { animation: slideOutRight 0.3s ease-out forwards; }
.animate-pulse-border { animation: pulse-border 2s infinite; }

/* Stagger animation for cards */
.stagger-item { opacity: 0; animation: fadeInUp 0.4s ease-out forwards; }
.stagger-item:nth-child(1) { animation-delay: 0ms; }
.stagger-item:nth-child(2) { animation-delay: 80ms; }
.stagger-item:nth-child(3) { animation-delay: 160ms; }
.stagger-item:nth-child(4) { animation-delay: 240ms; }
.stagger-item:nth-child(5) { animation-delay: 320ms; }
.stagger-item:nth-child(6) { animation-delay: 400ms; }

/* Toast notifications */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}
.toast {
    pointer-events: auto;
    max-width: 24rem;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    animation: slideInRight 0.3s ease-out;
}
.toast.toast-hide { animation: slideOutRight 0.3s ease-out forwards; }
.toast-success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.toast-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.toast-info { background: #eff6ff; color: #1e40af; border: 1px solid #bfdbfe; }

/* Mobile menu overlay */
.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 40;
    opacity: 0;
    transition: opacity 0.2s;
    pointer-events: none;
}
.mobile-menu-overlay.active {
    opacity: 1;
    pointer-events: auto;
}
.mobile-menu-panel {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 280px;
    background: white;
    z-index: 50;
    transform: translateX(100%);
    transition: transform 0.25s ease-out;
    box-shadow: -4px 0 16px rgba(0, 0, 0, 0.1);
    overflow-y: auto;
}
.mobile-menu-panel.active { transform: translateX(0); }

/* Card hover lift */
.card-hover {
    transition: transform 0.15s ease-out, box-shadow 0.15s ease-out;
}
.card-hover:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* Gradient text */
.text-gradient {
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Sticky header */
.sticky-header {
    position: sticky;
    top: 0;
    z-index: 30;
    backdrop-filter: blur(8px);
    background: rgba(255, 255, 255, 0.95);
}

/* Score bar animation */
.score-bar {
    transition: width 0.6s ease-out;
}

/* Line clamp */
.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Empty state illustration placeholder */
.empty-state {
    padding: 3rem 1.5rem;
    text-align: center;
}
.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.4;
}

/* Scrollbar styling */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #9ca3af; }

/* Print */
@media print {
    nav, footer, .no-print { display: none !important; }
    main { padding: 0 !important; max-width: 100% !important; }
}