Complete 4.1.3: Loading Animations - Implement various loading spinners, progress indicators, and skeleton states for enhanced user experience

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Vincent 2025-09-29 22:58:37 -04:00
parent d67d152b77
commit f3776b86b0
2 changed files with 639 additions and 4 deletions

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@ -447,10 +447,16 @@ All utilities follow the established pattern of using CSS custom properties from
**Notes:** Comprehensive component animation system implemented including smooth state transitions (hover, focus, active states), enter/exit animations for dynamic content (message slide-ins, system message fades), and micro-interaction feedback (button scales, form lifts, mobile navigation feedback). Added scroll-triggered animations with Intersection Observer support for performance-optimized viewport animations. Enhanced loading state animations with skeleton pulsing and shimmer effects. All animations use CSS custom properties from utilities.css for consistent timing and performance.
#### 4.1.3: Loading Animations
- [ ] Implement spinner and progress indicators
- [ ] Add skeleton loading states
- [ ] Create engaging loading experiences
#### 4.1.3: Loading Animations - COMPLETED 9/29/2025
- [x] Implement spinner and progress indicators
- [x] Add skeleton loading states
- [x] Create engaging loading experiences
**Notes:** Comprehensive loading animation system implemented in utilities.css with:
- **Spinners & Progress Indicators**: Border spinners (.spinner-border), grow spinners (.spinner-grow), loading dots (.loading-dots), loading bars (.loading-bars), spinning dots (.spinning-dots), progress bars (.progress-bar with .progress-bar-striped variants and indeterminate animations), and circular progress indicators (.progress-circular)
- **Skeleton Loading States**: Base skeleton (.skeleton), skeleton lines (.skeleton-line), circles (.skeleton-circle), rectangles (.skeleton-rectangle), shimmer effect (.skeleton-shimmer), skeleton cards (.skeleton-card), and skeleton lists (.skeleton-list). Includes light/dark variants (.skeleton-light, .skeleton-dark)
- **Engaging Loading Experiences**: Orbital spinners (.loading-orbit), animated hourglass (.hourglass), digital counter (.loading-counter), matrix-style rain (.loading-matrix), and cosmic orbiting particles (.loading-cosmic)
- **Technical Features**: All animations use Dodgers-themed color scheme (--dodgers-blue, --dodgers-red, --dodgers-yellow), 60fps performance with transform/opacity animations, responsive design, and accessibility considerations. Uses keyframe animations for smooth performance and CSS custom properties for consistency.
### Sub-task 4.2: Interactive States and Feedback

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@ -1279,3 +1279,632 @@
transform: translateY(-2px);
box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}
/* =================================================================
LOADING ANIMATIONS - Phase 4.1.3 Implementation
================================================================= */
/* ===== LOADING SPINNERS ===== */
@keyframes spinner-border {
to { transform: rotate(360deg); }
}
@keyframes spinner-grow {
0% {
transform: scale(0);
opacity: 1;
}
50% {
opacity: 0.7;
}
100% {
transform: scale(1);
opacity: 0;
}
}
@keyframes loading-dots {
0%, 20% { opacity: 0; }
50% { opacity: 1; }
100% { opacity: 0; }
}
@keyframes loading-bars {
0% { transform: scaleY(0.4); }
20% { transform: scaleY(1); }
40% { transform: scaleY(0.4); }
100% { transform: scaleY(0.4); }
}
@keyframes spinning-dots {
0% { transform: rotate(0deg) scale(1); }
25% { transform: rotate(90deg) scale(0.8); }
50% { transform: rotate(180deg) scale(1.2); }
75% { transform: rotate(270deg) scale(0.8); }
100% { transform: rotate(360deg) scale(1); }
}
/* Spinner variants */
.spinner-border {
display: inline-block;
width: 2rem;
height: 2rem;
border: 0.25rem solid var(--dodgers-gray-200);
border-right-color: var(--dodgers-blue);
border-radius: 50%;
animation: spinner-border 0.75s linear infinite;
}
.spinner-border-sm {
width: 1rem;
height: 1rem;
border-width: 0.2rem;
}
.spinner-grow {
display: inline-block;
width: 2rem;
height: 2rem;
background-color: var(--dodgers-blue);
border-radius: 50%;
animation: spinner-grow 0.75s linear infinite;
opacity: 0;
}
.loading-dots {
display: inline-flex;
gap: 0.25rem;
align-items: center;
}
.loading-dots > span {
width: 0.5rem;
height: 0.5rem;
border-radius: 50%;
background-color: var(--dodgers-blue);
animation: loading-dots 1.4s ease-in-out infinite both;
}
.loading-dots > span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots > span:nth-child(2) { animation-delay: -0.16s; }
.loading-dots > span:nth-child(3) { animation-delay: 0s; }
.loading-bars {
display: inline-flex;
gap: 0.125rem;
align-items: flex-end;
}
.loading-bars > span {
width: 0.25rem;
height: 1rem;
background-color: var(--dodgers-blue);
animation: loading-bars 1.2s ease-in-out infinite both;
transform-origin: bottom;
}
.loading-bars > span:nth-child(1) { animation-delay: -1.1s; }
.loading-bars > span:nth-child(2) { animation-delay: -1.0s; }
.loading-bars > span:nth-child(3) { animation-delay: -0.9s; }
.loading-bars > span:nth-child(4) { animation-delay: -0.8s; }
.loading-bars > span:nth-child(5) { animation-delay: -0.7s; }
.spinning-dots {
display: inline-flex;
position: relative;
}
.spinning-dots > span {
position: absolute;
width: 0.75rem;
height: 0.75rem;
border-radius: 50%;
background-color: var(--dodgers-blue);
}
.spinning-dots > span:nth-child(1) {
top: 0.5rem;
left: 1.25rem;
}
.spinning-dots > span:nth-child(2) {
top: 0.75rem;
left: 1rem;
}
.spinning-dots > span:nth-child(3) {
top: 1.25rem;
left: 0.75rem;
}
.spinning-dots > span:nth-child(4) {
top: 1.5rem;
left: 0.5rem;
}
@keyframes spinning-dots {
0% {
transform: rotate(0deg);
}
10% {
background-color: var(--dodgers-blue);
}
20% {
background-color: var(--dodgers-red);
}
30% {
background-color: var(--dodgers-yellow);
}
40% {
background-color: var(--dodgers-blue);
}
100% {
transform: rotate(360deg);
}
}
.spinning-dots > span:nth-child(1) { animation: spinning-dots 2s infinite linear; }
.spinning-dots > span:nth-child(2) { animation: spinning-dots 2s infinite linear 0.1s; }
.spinning-dots > span:nth-child(3) { animation: spinning-dots 2s infinite linear 0.2s; }
.spinning-dots > span:nth-child(4) { animation: spinning-dots 2s infinite linear 0.3s; }
/* ===== PROGRESS INDICATORS ===== */
@keyframes progress-bar {
from { width: 0%; }
to { width: 100%; }
}
@keyframes progress-bar-stripes {
from { transform: translateX(0); }
to { transform: translateX(1rem); }
}
@keyframes indeterminate {
0% { transform: translateX(-100%) scaleX(1); }
49.999% { transform: translateX(0%) scaleX(1); }
50% { transform: translateX(0%) scaleX(1); }
100% { transform: translateX(100%) scaleX(1); }
}
.progress-bar {
position: relative;
height: 0.5rem;
background-color: var(--dodgers-gray-200);
border-radius: 0.25rem;
overflow: hidden;
}
.progress-bar > .progress-fill {
height: 100%;
background: linear-gradient(90deg, var(--dodgers-blue) 0%, var(--dodgers-red) 100%);
border-radius: inherit;
transition: width 0.3s ease;
display: flex;
align-items: center;
justify-content: flex-end;
color: white;
font-size: 0.75rem;
padding-right: 0.25rem;
}
.progress-bar-striped > .progress-fill {
background-image: linear-gradient(
45deg,
rgba(255, 255, 255, 0.15) 25%,
transparent 25%,
transparent 50%,
rgba(255, 255, 255, 0.15) 50%,
rgba(255, 255, 255, 0.15) 75%,
transparent 75%,
transparent
);
background-size: 1rem 1rem;
animation: progress-bar-stripes 1s linear infinite;
}
.progress-bar-indeterminate > .progress-fill {
width: 30% !important;
animation: indeterminate 1.5s ease-in-out infinite;
}
.progress-circular {
position: relative;
width: 3rem;
height: 3rem;
}
.progress-circular > svg {
transform: rotate(-90deg);
}
.progress-circular > svg circle {
cx: 1.5rem;
cy: 1.5rem;
r: 1.25rem;
fill: none;
stroke: var(--dodgers-gray-200);
stroke-width: 0.25rem;
}
.progress-circular > svg circle.progress-fill {
stroke: var(--dodgers-blue);
stroke-linecap: round;
transition: stroke-dasharray 0.3s ease;
}
/* ===== SKELETON LOADING STATES ===== */
@keyframes skeleton-pulse {
0% { opacity: 1; }
50% { opacity: 0.4; }
100% { opacity: 1; }
}
@keyframes skeleton-shimmer {
0% { transform: translateX(-100%); }
100% { transform: translateX(100%); }
}
.skeleton {
background-color: var(--dodgers-gray-100);
border-radius: 0.25rem;
animation: skeleton-pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}
.skeleton-line {
height: 1rem;
margin-bottom: 0.5rem;
}
.skeleton-line:last-child {
margin-bottom: 0;
}
.skeleton-circle {
width: 2.5rem;
height: 2.5rem;
border-radius: 50%;
}
.skeleton-rectangle {
width: 100%;
height: 8rem;
border-radius: 0.5rem;
}
.skeleton-shimmer {
position: relative;
overflow: hidden;
background-color: var(--dodgers-gray-100);
border-radius: 0.25rem;
}
.skeleton-shimmer::before {
content: '';
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: linear-gradient(
90deg,
transparent,
rgba(255, 255, 255, 0.4),
transparent
);
animation: skeleton-shimmer 1.5s infinite;
}
.skeleton-light {
background-color: var(--dodgers-gray-50);
}
.skeleton-dark {
background-color: var(--dodgers-gray-200);
}
/* Skeleton card layout */
.skeleton-card {
padding: 1rem;
border: 1px solid var(--dodgers-gray-200);
border-radius: 0.5rem;
}
.skeleton-card-header {
display: flex;
align-items: center;
margin-bottom: 1rem;
}
.skeleton-card-header .skeleton-circle {
margin-right: 0.75rem;
flex-shrink: 0;
}
.skeleton-card-header .skeleton-line {
flex: 1;
height: 1.25rem;
}
.skeleton-card-content .skeleton-line {
margin-bottom: 0.5rem;
}
.skeleton-card-content .skeleton-line:nth-child(2) { width: 90%; }
.skeleton-card-content .skeleton-line:nth-child(3) { width: 75%; }
/* Skeleton list layout */
.skeleton-list {
display: flex;
flex-direction: column;
gap: 0.75rem;
}
.skeleton-list-item {
display: flex;
align-items: center;
padding: 0.5rem 0;
}
.skeleton-list-item .skeleton-circle {
width: 2rem;
height: 2rem;
margin-right: 0.75rem;
flex-shrink: 0;
}
.skeleton-list-item .skeleton-content {
flex: 1;
}
.skeleton-list-item .skeleton-content .skeleton-line {
height: 1rem;
margin-bottom: 0.25rem;
}
.skeleton-list-item .skeleton-content .skeleton-line:nth-child(2) { width: 70%; }
/* ===== ENGAGING LOADING EXPERIENCES ===== */
@keyframes loading-bounce {
0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
40% { transform: translateY(-0.5rem); }
60% { transform: translateY(-0.25rem); }
}
@keyframes loading-elastic {
0% { transform: scale(0.3); }
40% { transform: scale(1); }
80% { transform: scale(0.9); }
100% { transform: scale(0.9); }
}
@keyframes loading-wave {
0% { transform: rotate(0deg); }
10% { transform: rotate(14deg); }
20% { transform: rotate(-8deg); }
30% { transform: rotate(14deg); }
40% { transform: rotate(-4deg); }
50% { transform: rotate(10deg); }
60% { transform: rotate(0deg); }
100% { transform: rotate(0deg); }
}
@keyframes loading-heartbeat {
0% { transform: scale(1); }
50% { transform: scale(1.1); }
100% { transform: scale(1); }
}
@keyframes loading-orbit {
0% { transform: rotate(0deg); }
100% { transform: rotate(360deg); }
}
.loading-bounce {
animation: loading-bounce 2s infinite;
}
.loading-elastic {
animation: loading-elastic 2s infinite;
}
.loading-wave {
animation: loading-wave 2.5s infinite;
}
.loading-heartbeat {
animation: loading-heartbeat 1s infinite;
}
/* Orbit spinning loader */
.loading-orbit {
position: relative;
width: 4rem;
height: 4rem;
}
.loading-orbit > span {
position: absolute;
width: 0.5rem;
height: 0.5rem;
border-radius: 50%;
background-color: var(--dodgers-blue);
}
.loading-orbit > span:nth-child(1) { top: 0; left: 50%; margin-left: -0.25rem; }
.loading-orbit > span:nth-child(2) { top: 12.5%; right: 12.5%; }
.loading-orbit > span:nth-child(3) { bottom: 12.5%; right: 12.5%; }
.loading-orbit > span:nth-child(4) { bottom: 0; left: 50%; margin-left: -0.25rem; }
.loading-orbit > span:nth-child(5) { bottom: 12.5%; left: 12.5%; }
.loading-orbit > span:nth-child(6) { top: 12.5%; left: 12.5%; }
.loading-orbit > span:nth-child(1) { animation: loading-orbit 2s linear infinite; animation-delay: -1.9s; }
.loading-orbit > span:nth-child(2) { animation: loading-orbit 2s linear infinite; animation-delay: -1.6s; }
.loading-orbit > span:nth-child(3) { animation: loading-orbit 2s linear infinite; animation-delay: -1.3s; }
.loading-orbit > span:nth-child(4) { animation: loading-orbit 2s linear infinite; animation-delay: -1.0s; }
.loading-orbit > span:nth-child(5) { animation: loading-orbit 2s linear infinite; animation-delay: -0.7s; }
.loading-orbit > span:nth-child(6) { animation: loading-orbit 2s linear infinite; animation-delay: -0.4s; }
/* Hourglass loader */
@keyframes hourglass {
0%, 100% {
transform: rotate(0deg);
border-radius: 0;
}
25% {
transform: rotate(15deg);
}
50% {
transform: rotate(0deg);
border-radius: 50% 0 50% 50%;
}
75% {
transform: rotate(-15deg);
}
}
.hourglass {
width: 2rem;
height: 2rem;
position: relative;
background: linear-gradient(
to bottom,
transparent 25%,
var(--dodgers-blue) 25%,
var(--dodgers-blue) 75%,
transparent 75%
);
border-radius: 0 0 50% 50%;
animation: hourglass 2s infinite;
transform-origin: center bottom;
}
.hourglass::after {
content: '';
position: absolute;
top: 50%;
left: 50%;
width: 0.25rem;
height: 0.5rem;
background: var(--dodgers-blue);
transform: translate(-50%, -50%);
}
/* Digital loading counter */
.loading-counter {
font-family: 'Courier New', monospace;
font-size: 2rem;
font-weight: bold;
color: var(--dodgers-blue);
animation: loading-counter 2s linear infinite;
text-shadow: 0 0 10px rgba(30, 144, 255, 0.5);
}
@keyframes loading-counter {
0% { content: "0"; }
10% { content: "1"; }
20% { content: "2"; }
30% { content: "3"; }
40% { content: "4"; }
50% { content: "5"; }
60% { content: "6"; }
70% { content: "7"; }
80% { content: "8"; }
90% { content: "9"; }
100% { content: "0"; }
}
/* Matrix-style loading */
@keyframes matrix-rain {
0% { opacity: 0; transform: translateY(-2rem); }
10% { opacity: 1; }
90% { opacity: 1; }
100% { opacity: 0; transform: translateY(2rem); }
}
.loading-matrix {
position: relative;
width: 3rem;
height: 3rem;
font-family: 'Courier New', monospace;
font-size: 1.5rem;
color: var(--dodgers-blue);
display: flex;
align-items: center;
justify-content: center;
overflow: hidden;
}
.loading-matrix::before {
content: '01';
position: absolute;
animation: matrix-rain 2s infinite;
animation-delay: -1s;
}
.loading-matrix::after {
content: '10';
position: absolute;
animation: matrix-rain 2s infinite;
}
/* Cosmic loading effect */
@keyframes cosmic-orbit {
0% {
transform: rotate(0deg) scale(0.8);
opacity: 0.5;
}
50% {
transform: rotate(180deg) scale(1.2);
opacity: 1;
}
100% {
transform: rotate(360deg) scale(0.8);
opacity: 0.5;
}
}
.loading-cosmic {
position: relative;
width: 4rem;
height: 4rem;
}
.loading-cosmic > span {
position: absolute;
width: 0.75rem;
height: 0.75rem;
border-radius: 50%;
background: linear-gradient(45deg, var(--dodgers-blue), var(--dodgers-red));
box-shadow: 0 0 10px rgba(30, 144, 255, 0.6);
}
.loading-cosmic > span:nth-child(1) {
top: 0;
left: 50%;
margin-left: -0.375rem;
animation: cosmic-orbit 3s infinite linear;
}
.loading-cosmic > span:nth-child(2) {
top: 25%;
right: 0;
margin-top: -0.375rem;
animation: cosmic-orbit 3s infinite linear;
animation-delay: -1s;
background: linear-gradient(45deg, var(--dodgers-red), var(--dodgers-yellow));
box-shadow: 0 0 10px rgba(220, 20, 60, 0.6);
}
.loading-cosmic > span:nth-child(3) {
bottom: 25%;
right: 0;
margin-bottom: -0.375rem;
animation: cosmic-orbit 3s infinite linear;
animation-delay: -2s;
background: linear-gradient(45deg, var(--dodgers-yellow), var(--dodgers-blue));
box-shadow: 0 0 10px rgba(255, 215, 0, 0.6);
}