/* Animations */

/* Page Entry Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-content {
    animation: fadeInUp 0.3s ease-out;
}

/* Fade In */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 0.2s ease-out;
}

/* Slide In */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in-right {
    animation: slideInRight 0.3s ease-out;
}

.slide-in-left {
    animation: slideInLeft 0.3s ease-out;
}

.slide-in-down {
    animation: slideInDown 0.2s ease-out;
}

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

.scale-in {
    animation: scaleIn 0.2s ease-out;
}

/* Staggered List Animation */
.stagger-item {
    opacity: 0;
    animation: fadeInUp 0.3s ease-out forwards;
}

.stagger-item:nth-child(1) { animation-delay: 0.05s; }
.stagger-item:nth-child(2) { animation-delay: 0.1s; }
.stagger-item:nth-child(3) { animation-delay: 0.15s; }
.stagger-item:nth-child(4) { animation-delay: 0.2s; }
.stagger-item:nth-child(5) { animation-delay: 0.25s; }
.stagger-item:nth-child(6) { animation-delay: 0.3s; }
.stagger-item:nth-child(7) { animation-delay: 0.35s; }
.stagger-item:nth-child(8) { animation-delay: 0.4s; }
.stagger-item:nth-child(9) { animation-delay: 0.45s; }
.stagger-item:nth-child(10) { animation-delay: 0.5s; }

/* Counter Animation */
@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-count {
    animation: countUp 0.5s ease-out;
}

/* Pulse */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Skeleton Loading */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

.skeleton {
    background: linear-gradient(
        90deg,
        var(--color-gray-100) 25%,
        var(--color-gray-200) 50%,
        var(--color-gray-100) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
}

.skeleton-text:last-child {
    width: 70%;
}

.skeleton-title {
    height: 1.5em;
    width: 60%;
    margin-bottom: 1em;
}

.skeleton-card {
    height: 120px;
    border-radius: var(--radius-lg);
}

.skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
}

/* Bounce */
@keyframes bounce {
    0%, 100% {
        transform: translateY(-5%);
        animation-timing-function: cubic-bezier(0.8, 0, 1, 1);
    }
    50% {
        transform: translateY(0);
        animation-timing-function: cubic-bezier(0, 0, 0.2, 1);
    }
}

.bounce {
    animation: bounce 1s infinite;
}

/* Shake (for errors) */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-4px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(4px);
    }
}

.shake {
    animation: shake 0.5s ease-in-out;
}

/* Progress Bar */
@keyframes progressBar {
    from {
        width: 0%;
    }
    to {
        width: var(--progress, 100%);
    }
}

.progress-bar {
    height: 4px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--color-accent);
    border-radius: var(--radius-full);
    animation: progressBar 1s ease-out forwards;
}

/* Notification Slide */
@keyframes notificationSlide {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.notification-enter {
    animation: notificationSlide 0.3s ease-out;
}

.notification-exit {
    animation: notificationSlideOut 0.3s ease-out forwards;
}

/* Modal Animations */
@keyframes modalBackdropIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes modalContentIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

@keyframes modalContentOut {
    from {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
    to {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }
}

.modal-backdrop.entering {
    animation: modalBackdropIn 0.2s ease-out forwards;
}

.modal-backdrop.exiting {
    animation: modalBackdropOut 0.2s ease-out forwards;
}

.modal-content.entering {
    animation: modalContentIn 0.2s ease-out forwards;
}

.modal-content.exiting {
    animation: modalContentOut 0.2s ease-out forwards;
}

/* Chart Animations */
@keyframes chartBarGrow {
    from {
        transform: scaleY(0);
    }
    to {
        transform: scaleY(1);
    }
}

.chart-bar {
    transform-origin: bottom;
    animation: chartBarGrow 0.5s ease-out forwards;
}

.chart-bar:nth-child(1) { animation-delay: 0.1s; }
.chart-bar:nth-child(2) { animation-delay: 0.15s; }
.chart-bar:nth-child(3) { animation-delay: 0.2s; }
.chart-bar:nth-child(4) { animation-delay: 0.25s; }
.chart-bar:nth-child(5) { animation-delay: 0.3s; }
.chart-bar:nth-child(6) { animation-delay: 0.35s; }
.chart-bar:nth-child(7) { animation-delay: 0.4s; }

/* Timer Pulse */
@keyframes timerPulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(239, 68, 68, 0);
    }
}

.timer-active {
    animation: timerPulse 2s ease-in-out infinite;
}

/* Success Check Animation */
@keyframes checkmark {
    0% {
        stroke-dashoffset: 100;
    }
    100% {
        stroke-dashoffset: 0;
    }
}

.success-check {
    stroke-dasharray: 100;
    stroke-dashoffset: 100;
    animation: checkmark 0.5s ease-out 0.2s forwards;
}

/* Page Transitions */
.main-content {
    transition: opacity 0.1s ease-out, transform 0.1s ease-out;
}

.main-content.page-exit {
    opacity: 0;
    transform: translateY(-5px);
}

.main-content.page-enter {
    animation: pageEnter 0.2s ease-out;
}

@keyframes pageEnter {
    from {
        opacity: 0;
        transform: translateY(5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* View Transitions API (for supported browsers) */
@view-transition {
    navigation: auto;
}

::view-transition-old(root) {
    animation: fade-out 0.1s ease-out;
}

::view-transition-new(root) {
    animation: fade-in 0.15s ease-out;
}

@keyframes fade-out {
    from { opacity: 1; }
    to { opacity: 0; }
}

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Prevent layout shift during navigation */
.sidebar {
    view-transition-name: sidebar;
}

::view-transition-old(sidebar),
::view-transition-new(sidebar) {
    animation: none;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}