/* ============================================
   DEV JOURNAL - ANIMATIONS & MICRO-INTERACTIONS
   Windows 11 Fluent Design Inspired
   ============================================ */

/* Animation Variables */
:root {
    --anim-fast: 150ms;
    --anim-normal: 200ms;
    --anim-slow: 300ms;
    --anim-slower: 400ms;
    --anim-easing: cubic-bezier(0.1, 0.9, 0.2, 1.0);
    --anim-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --anim-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --anim-decelerate: cubic-bezier(0, 0, 0.2, 1);
    --anim-accelerate: cubic-bezier(0.4, 0, 1, 1);
}

/* ============================================
   KEYFRAME ANIMATIONS
   ============================================ */

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

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Slide Animations */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

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

/* Scale Animations */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes scaleOut {
    from {
        opacity: 1;
        transform: scale(1);
    }
    to {
        opacity: 0;
        transform: scale(0.9);
    }
}

@keyframes scaleBounce {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes popIn {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    70% {
        transform: scale(1.05);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

/* Loading Animations */
@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(0.95);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 0.5;
    }
    100% {
        transform: scale(4);
        opacity: 0;
    }
}

/* Glow Animation */
@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(0, 120, 212, 0.3);
    }
    50% {
        box-shadow: 0 0 20px rgba(0, 120, 212, 0.6);
    }
}

/* Shake Animation (for errors) */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

/* Float Animation */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

/* ============================================
   UTILITY ANIMATION CLASSES
   ============================================ */

/* Fade In */
.animate-fadeIn {
    animation: fadeIn var(--anim-normal) var(--anim-easing) forwards;
}

.animate-fadeInUp {
    animation: fadeInUp var(--anim-normal) var(--anim-easing) forwards;
}

.animate-fadeInDown {
    animation: fadeInDown var(--anim-normal) var(--anim-easing) forwards;
}

/* Slide */
.animate-slideUp {
    animation: slideUp var(--anim-normal) var(--anim-easing) forwards;
}

.animate-slideDown {
    animation: slideDown var(--anim-normal) var(--anim-easing) forwards;
}

.animate-slideInLeft {
    animation: slideInLeft var(--anim-normal) var(--anim-easing) forwards;
}

.animate-slideInRight {
    animation: slideInRight var(--anim-normal) var(--anim-easing) forwards;
}

/* Scale */
.animate-scaleIn {
    animation: scaleIn var(--anim-normal) var(--anim-easing) forwards;
}

.animate-popIn {
    animation: popIn var(--anim-slow) var(--anim-bounce) forwards;
}

.animate-scaleBounce {
    animation: scaleBounce var(--anim-slow) var(--anim-bounce);
}

/* Loading */
.animate-spin {
    animation: spin 1s linear infinite;
}

.animate-pulse {
    animation: pulse 2s var(--anim-smooth) infinite;
}

.animate-shimmer {
    background: linear-gradient(
        90deg,
        var(--win11-sidebar-bg, #1f1f1f) 25%,
        var(--win11-hover, #3d3d3d) 50%,
        var(--win11-sidebar-bg, #1f1f1f) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* Special Effects */
.animate-glow {
    animation: glow 2s ease-in-out infinite;
}

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

.animate-float {
    animation: float 3s ease-in-out infinite;
}

/* ============================================
   STAGGER ANIMATION DELAYS
   ============================================ */

.stagger-1 { animation-delay: 0ms; }
.stagger-2 { animation-delay: 50ms; }
.stagger-3 { animation-delay: 100ms; }
.stagger-4 { animation-delay: 150ms; }
.stagger-5 { animation-delay: 200ms; }
.stagger-6 { animation-delay: 250ms; }
.stagger-7 { animation-delay: 300ms; }
.stagger-8 { animation-delay: 350ms; }
.stagger-9 { animation-delay: 400ms; }
.stagger-10 { animation-delay: 450ms; }

/* Auto-stagger for list children */
.stagger-children > *:nth-child(1) { animation-delay: 0ms; }
.stagger-children > *:nth-child(2) { animation-delay: 50ms; }
.stagger-children > *:nth-child(3) { animation-delay: 100ms; }
.stagger-children > *:nth-child(4) { animation-delay: 150ms; }
.stagger-children > *:nth-child(5) { animation-delay: 200ms; }
.stagger-children > *:nth-child(6) { animation-delay: 250ms; }
.stagger-children > *:nth-child(7) { animation-delay: 300ms; }
.stagger-children > *:nth-child(8) { animation-delay: 350ms; }
.stagger-children > *:nth-child(9) { animation-delay: 400ms; }
.stagger-children > *:nth-child(10) { animation-delay: 450ms; }
.stagger-children > *:nth-child(n+11) { animation-delay: 500ms; }

/* ============================================
   TRANSITION UTILITIES
   ============================================ */

.transition-all {
    transition: all var(--anim-normal) var(--anim-easing);
}

.transition-fast {
    transition: all var(--anim-fast) var(--anim-easing);
}

.transition-slow {
    transition: all var(--anim-slow) var(--anim-easing);
}

.transition-transform {
    transition: transform var(--anim-fast) var(--anim-easing);
}

.transition-opacity {
    transition: opacity var(--anim-fast) var(--anim-easing);
}

.transition-colors {
    transition: background-color var(--anim-fast),
                color var(--anim-fast),
                border-color var(--anim-fast);
}

/* ============================================
   HOVER EFFECT UTILITIES
   ============================================ */

.hover-lift {
    transition: transform var(--anim-fast) var(--anim-easing),
                box-shadow var(--anim-fast) var(--anim-easing);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.hover-scale {
    transition: transform var(--anim-fast) var(--anim-easing);
}

.hover-scale:hover {
    transform: scale(1.05);
}

.hover-glow {
    transition: box-shadow var(--anim-fast) var(--anim-easing);
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(0, 120, 212, 0.4);
}

/* ============================================
   SKELETON LOADING COMPONENTS
   ============================================ */

.skeleton {
    background: linear-gradient(
        90deg,
        var(--win11-sidebar-bg, #1f1f1f) 25%,
        var(--win11-hover, #3d3d3d) 50%,
        var(--win11-sidebar-bg, #1f1f1f) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 4px;
}

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

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

.skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.skeleton-card {
    height: 120px;
    border-radius: 8px;
}

.skeleton-row {
    height: 48px;
    margin-bottom: 8px;
    border-radius: 6px;
}

/* ============================================
   FADE TRANSITION STATES
   ============================================ */

.fade-enter {
    opacity: 0;
}

.fade-enter-active {
    opacity: 1;
    transition: opacity var(--anim-normal) var(--anim-easing);
}

.fade-exit {
    opacity: 1;
}

.fade-exit-active {
    opacity: 0;
    transition: opacity var(--anim-normal) var(--anim-easing);
}

/* Tab content fade */
.fade-out {
    opacity: 0;
    transition: opacity var(--anim-fast) var(--anim-easing);
}

.fade-in {
    opacity: 1;
    transition: opacity var(--anim-fast) var(--anim-easing);
}

/* ============================================
   RIPPLE EFFECT (for buttons)
   ============================================ */

.ripple-container {
    position: relative;
    overflow: hidden;
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: scale(0);
    animation: ripple 0.6s linear;
    pointer-events: none;
}

/* ============================================
   ACCESSIBILITY - REDUCED MOTION
   ============================================ */

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

    .animate-shimmer,
    .skeleton {
        animation: none;
        background: var(--win11-hover, #3d3d3d);
    }
}

/* ============================================
   PRINT STYLES - NO ANIMATIONS
   ============================================ */

@media print {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }
}

/* ============================================
   TYPING CURSOR ANIMATION
   ============================================ */

@keyframes blink {
    0%, 50% { border-right-color: var(--primary, #0078d4); }
    51%, 100% { border-right-color: transparent; }
}

.typing-cursor {
    border-right: 2px solid var(--primary, #0078d4);
    animation: blink 0.8s infinite;
    padding-right: 2px;
}

/* ============================================
   PAGE TRANSITIONS
   ============================================ */

body {
    opacity: 0;
    transition: opacity 0.25s var(--anim-easing);
}

body.page-loaded {
    opacity: 1;
}

body.page-exit {
    opacity: 0;
    transition: opacity 0.2s var(--anim-easing);
}

/* ============================================
   TOAST ANIMATIONS
   ============================================ */

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

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

.toast {
    animation: toastEnter 0.3s var(--anim-easing) forwards;
}

.toast-exit {
    animation: toastExit 0.3s var(--anim-easing) forwards;
}

/* ============================================
   BUTTON MICRO-INTERACTIONS
   ============================================ */

.toolbar-btn:active,
.btn-primary:active,
.btn-secondary:active,
.btn-danger:active,
.btn-ai:active,
.nav-btn:active {
    transform: scale(0.95);
    transition: transform 0.1s;
}

/* Nav link underline slide */
.win11-nav-link,
.nav-link {
    position: relative;
}

.win11-nav-link::after,
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary, #0078d4);
    transition: width 0.3s var(--anim-easing), left 0.3s var(--anim-easing);
}

.win11-nav-link:hover::after,
.nav-link:hover::after,
.win11-nav-link.active::after,
.nav-link.active::after {
    width: 100%;
    left: 0;
}

/* Form input focus glow */
input:focus,
textarea:focus,
select:focus {
    animation: glow 0.5s var(--anim-easing);
}

/* ============================================
   CONTEXT MENU ANIMATION
   ============================================ */

.context-menu {
    transform-origin: top left;
    animation: scaleIn var(--anim-fast) var(--anim-easing) forwards;
}

/* ============================================
   MODAL ANIMATIONS
   ============================================ */

.modal {
    animation: fadeIn var(--anim-fast) var(--anim-easing);
}

.modal-content {
    animation: scaleIn var(--anim-normal) var(--anim-easing);
}

/* ============================================
   EDITOR TOOLBAR & PREVIEW STYLES
   ============================================ */

.editor-toolbar {
    display: flex;
    gap: 4px;
    margin-bottom: var(--space-sm, 8px);
    border: 1px solid var(--border, #333);
    border-radius: var(--radius-md, 8px);
    padding: 4px;
    background: var(--bg-secondary, #1a1a1a);
    width: fit-content;
}

.editor-mode-btn {
    padding: 6px 16px;
    border: none;
    background: none;
    color: var(--text-muted, #888);
    cursor: pointer;
    border-radius: var(--radius-sm, 4px);
    font-size: var(--text-sm, 0.875rem);
    transition: all var(--anim-fast, 150ms);
    min-height: 32px;
}

.editor-mode-btn:hover {
    background: var(--bg, #111);
    color: var(--text, #eee);
}

.editor-mode-btn.active {
    background: var(--primary, #0078d4);
    color: white;
}

.editor-container {
    display: grid;
    gap: var(--space-md, 16px);
}

.editor-container[data-mode="edit"] {
    grid-template-columns: 1fr;
}

.editor-container[data-mode="edit"] .markdown-preview {
    display: none;
}

.editor-container[data-mode="split"] {
    grid-template-columns: 1fr 1fr;
}

.editor-container[data-mode="preview"] textarea {
    display: none;
}

.editor-container[data-mode="preview"] {
    grid-template-columns: 1fr;
}

.markdown-preview {
    padding: var(--space-md, 16px);
    background: var(--bg-secondary, #1a1a1a);
    border: 1px solid var(--border, #333);
    border-radius: var(--radius-md, 8px);
    min-height: 200px;
    overflow-y: auto;
    color: var(--text, #eee);
    line-height: 1.6;
}

.markdown-preview h1,
.markdown-preview h2,
.markdown-preview h3 {
    margin: 16px 0 8px;
    color: var(--text, #eee);
}

.markdown-preview h1 { font-size: 1.5em; border-bottom: 1px solid var(--border, #333); padding-bottom: 8px; }
.markdown-preview h2 { font-size: 1.3em; }
.markdown-preview h3 { font-size: 1.1em; }

.markdown-preview pre.md-code-block {
    background: var(--bg, #111);
    border: 1px solid var(--border, #333);
    border-radius: 6px;
    padding: 12px;
    overflow-x: auto;
    margin: 12px 0;
}

.markdown-preview code.md-inline-code {
    background: var(--bg, #111);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    color: var(--primary, #0078d4);
}

.markdown-preview blockquote {
    border-left: 3px solid var(--primary, #0078d4);
    padding-left: 12px;
    color: var(--text-muted, #888);
    margin: 8px 0;
}

.markdown-preview ul,
.markdown-preview ol {
    padding-left: 24px;
    margin: 8px 0;
}

.markdown-preview hr {
    border: none;
    border-top: 1px solid var(--border, #333);
    margin: 16px 0;
}

@media (max-width: 768px) {
    .editor-container[data-mode="split"] {
        grid-template-columns: 1fr;
    }
}