diff --git a/UI_UPDATE.MD b/UI_UPDATE.MD
index 5bb4c6e..0137412 100644
--- a/UI_UPDATE.MD
+++ b/UI_UPDATE.MD
@@ -246,31 +246,31 @@ Always come back and update UI_UPDATE.MD once complete with task and task item.
 - [x] Add hover state animations for interactive icons
 
 #### 2.4.4: Accessibility Implementation
-- [ ] Add screen reader labels for decorative icons
-- [ ] Implement focus indicators for icon buttons
-- [ ] Test keyboard navigation for icon controls
+- [x] Add screen reader labels for decorative icons
+- [x] Implement focus indicators for icon buttons
+- [x] Test keyboard navigation for icon controls
 
 ### Sub-task 2.5: Component Visual Polish
 
 #### 2.5.1: Button Style Redesign
-- [ ] Create button component with multiple variants
-- [ ] Implement consistent button sizing and padding
-- [ ] Add button state variations (hover, active, disabled)
+- [x] Create button component with multiple variants
+- [x] Implement consistent button sizing and padding
+- [x] Add button state variations (hover, active, disabled)
 
 #### 2.5.2: Card Design Updates
-- [ ] Redesign card components with modern styling
-- [ ] Implement consistent card shadows and borders
-- [ ] Add card interaction states
+- [x] Redesign card components with modern styling
+- [x] Implement consistent card shadows and borders
+- [x] Add card interaction states
 
 #### 2.5.3: Form Element Updates
-- [ ] Enhance input field styling
-- [ ] Create consistent form element design
-- [ ] Implement form validation states
+- [x] Enhance input field styling
+- [x] Create consistent form element design
+- [x] Implement form validation states
 
 #### 2.5.4: Loading States
-- [ ] Implement skeleton loading patterns
-- [ ] Create smooth loading transitions
-- [ ] Add stateful component styling
+- [x] Implement skeleton loading patterns
+- [x] Create smooth loading transitions
+- [x] Add stateful component styling
 
 ---
 
diff --git a/static/css/components.css b/static/css/components.css
index dca71e4..e4d4ab5 100644
--- a/static/css/components.css
+++ b/static/css/components.css
@@ -1,5 +1,529 @@
 /* Component styles - Reusable UI components */
 
+/* =================================================================
+   BUTTON COMPONENT SYSTEM
+   ================================================================= */
+
+/* Base button styles */
+.btn {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    gap: var(--spacing-2);
+    padding: var(--spacing-3) var(--spacing-5);
+    border: 2px solid transparent;
+    border-radius: var(--border-radius-lg);
+    font-family: var(--font-family-base);
+    font-size: var(--font-size-sm);
+    font-weight: var(--font-weight-semibold);
+    text-align: center;
+    text-decoration: none;
+    cursor: pointer;
+    transition: all var(--transition-fast);
+    user-select: none;
+    position: relative;
+    overflow: hidden;
+    min-height: var(--min-tap-target-size, 44px);
+    box-sizing: border-box;
+}
+
+/* Button sizes */
+.btn-sm {
+    padding: var(--spacing-2) var(--spacing-4);
+    font-size: var(--font-size-xs);
+    min-height: var(--min-tap-target-size-sm, 36px);
+}
+
+.btn-lg {
+    padding: var(--spacing-4) var(--spacing-6);
+    font-size: var(--font-size-base);
+    min-height: var(--min-tap-target-size-lg, 52px);
+}
+
+/* Button variants */
+.btn-primary {
+    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-darker));
+    color: var(--color-on-primary);
+    box-shadow: var(--elevation-3);
+    border-color: var(--color-primary);
+}
+
+.btn-secondary {
+    background: var(--color-secondary);
+    color: var(--color-on-secondary);
+    border-color: var(--color-secondary);
+}
+
+.btn-accent {
+    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-darker));
+    color: var(--color-on-accent);
+    box-shadow: var(--elevation-3);
+    border-color: var(--color-accent);
+}
+
+.btn-outline {
+    background: transparent;
+    border-color: var(--color-outline);
+    color: var(--color-on-surface);
+}
+
+.btn-outline-primary {
+    background: transparent;
+    border-color: var(--color-primary);
+    color: var(--color-primary);
+}
+
+.btn-text {
+    background: transparent;
+    border-color: transparent;
+    color: var(--color-primary);
+    padding: var(--spacing-2) var(--spacing-3);
+    box-shadow: none;
+}
+
+/* Button states */
+.btn:hover {
+    /* Transform handled by state variants */
+}
+
+.btn:active {
+    transform: translateY(0);
+}
+
+.btn:disabled {
+    opacity: 0.6;
+    cursor: not-allowed;
+    transform: none !important;
+}
+
+.btn-primary:hover {
+    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
+    transform: translateY(-1px);
+    box-shadow: var(--elevation-4);
+}
+
+.btn-secondary:hover {
+    transform: translateY(-1px);
+    box-shadow: var(--elevation-2);
+}
+
+.btn-accent:hover {
+    background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent));
+    transform: translateY(-1px);
+    box-shadow: var(--elevation-4);
+}
+
+.btn-outline:hover {
+    background: var(--color-surface-variant);
+}
+
+.btn-outline-primary:hover {
+    background: var(--color-primary);
+    color: var(--color-on-primary);
+}
+
+.btn-text:hover {
+    background: rgba(var(--color-primary-rgb), 0.1);
+}
+
+/* Focus states for accessibility */
+.btn:focus-visible {
+    outline: 2px solid var(--color-focus);
+    outline-offset: 2px;
+}
+
+/* Loading state */
+.btn-loading {
+    position: relative;
+    color: transparent;
+}
+
+.btn-loading::after {
+    position: absolute;
+    content: '';
+    width: 1em;
+    height: 1em;
+    border: 2px solid rgba(255,255,255,0.3);
+    border-top: 2px solid white;
+    border-radius: 50%;
+    animation: spin 1s linear infinite;
+}
+
+/* Full width button */
+.btn-full {
+    width: 100%;
+}
+
+/* Icon buttons */
+.btn-icon {
+    padding: var(--spacing-2);
+    width: auto;
+    aspect-ratio: 1;
+}
+
+.btn-icon-only {
+    width: var(--min-tap-target-size, 44px);
+    height: var(--min-tap-target-size, 44px);
+    padding: 0;
+}
+
+/* =================================================================
+   CARD COMPONENT SYSTEM
+   ================================================================= */
+
+/* Base card styles */
+.card {
+    background: var(--color-surface);
+    border-radius: var(--border-radius-lg);
+    box-shadow: var(--elevation-1);
+    border: 1px solid var(--color-outline-variant);
+    transition: all var(--transition-fast);
+    overflow: hidden;
+    position: relative;
+}
+
+.card-elevated {
+    box-shadow: var(--elevation-2);
+}
+
+.card-outlined {
+    border-width: 2px;
+    background: var(--color-surface);
+}
+
+.card-header {
+    padding: var(--spacing-4);
+    border-bottom: 1px solid var(--color-outline-variant);
+    background: var(--color-surface-variant);
+}
+
+.card-body {
+    padding: var(--spacing-4);
+}
+
+.card-footer {
+    padding: var(--spacing-4);
+    border-top: 1px solid var(--color-outline-variant);
+    background: var(--color-surface-variant);
+}
+
+/* Card interaction states */
+.card:hover {
+    transform: translateY(-2px);
+    box-shadow: var(--elevation-3);
+}
+
+.card-interactive {
+    cursor: pointer;
+}
+
+.card-interactive:hover {
+    transform: translateY(-2px);
+    box-shadow: var(--elevation-3);
+}
+
+.card-interactive:active {
+    transform: translateY(0);
+    box-shadow: var(--elevation-1);
+}
+
+.card:focus-visible {
+    outline: 2px solid var(--color-focus);
+    outline-offset: 2px;
+}
+
+/* Card variants */
+.card-compact .card-body {
+    padding: var(--spacing-3);
+}
+
+.card-compact .card-header,
+.card-compact .card-footer {
+    padding: var(--spacing-3);
+}
+
+/* =================================================================
+   FORM ELEMENT SYSTEM
+   ================================================================= */
+
+/* Base input styles */
+.form-control {
+    width: 100%;
+    padding: var(--spacing-3) var(--spacing-4);
+    border: 2px solid var(--color-outline);
+    border-radius: var(--border-radius-md);
+    background: var(--color-surface);
+    color: var(--color-on-surface);
+    font-family: inherit;
+    font-size: var(--font-size-sm);
+    transition: all var(--transition-fast);
+    box-sizing: border-box;
+}
+
+.form-control:focus {
+    outline: none;
+    border-color: var(--color-primary);
+    box-shadow: 0 0 0 3px var(--focus-ring);
+}
+
+.form-label {
+    display: block;
+    margin-bottom: var(--spacing-2);
+    font-size: var(--font-size-sm);
+    font-weight: var(--font-weight-medium);
+    color: var(--color-on-surface);
+}
+
+.form-input,
+.form-textarea,
+.form-select {
+    /* Inherit from form-control */
+    width: 100%;
+    padding: var(--spacing-3) var(--spacing-4);
+    border: 2px solid var(--color-outline);
+    border-radius: var(--border-radius-md);
+    background: var(--color-surface);
+    color: var(--color-on-surface);
+    font-family: inherit;
+    font-size: var(--font-size-sm);
+    transition: all var(--transition-fast);
+    box-sizing: border-box;
+}
+
+.form-input:focus,
+.form-textarea:focus,
+.form-select:focus {
+    outline: none;
+    border-color: var(--color-primary);
+    box-shadow: 0 0 0 3px var(--focus-ring);
+}
+
+/* Form row for horizontal layouts */
+.form-row {
+    display: flex;
+    gap: var(--spacing-4);
+    align-items: flex-start;
+}
+
+.form-row .form-control {
+    flex: 1;
+}
+
+/* Validation states */
+.form-group {
+    margin-bottom: var(--spacing-4);
+    position: relative;
+}
+
+.form-group--error .form-control {
+    border-color: var(--color-error);
+}
+
+.form-group--error .form-control:focus {
+    box-shadow: 0 0 0 3px rgba(var(--color-error-rgb), 0.2);
+}
+
+.form-group--success .form-control {
+    border-color: var(--color-success);
+}
+
+.form-group--success .form-control:focus {
+    box-shadow: 0 0 0 3px rgba(var(--color-success-rgb), 0.2);
+}
+
+.form-error,
+.form-success {
+    font-size: var(--font-size-xs);
+    margin-top: var(--spacing-1);
+    display: block;
+}
+
+.form-error {
+    color: var(--color-error);
+}
+
+.form-success {
+    color: var(--color-success);
+}
+
+/* =================================================================
+   LOADING STATES - SKELETONS AND TRANSITIONS
+   ================================================================= */
+
+/* Skeleton loading animations */
+@keyframes skeleton-pulse {
+    0% { opacity: 1; }
+    50% { opacity: 0.6; }
+    100% { opacity: 1; }
+}
+
+/* Base skeleton styles */
+.skeleton {
+    background: linear-gradient(90deg, var(--color-surface-variant) 25%, var(--color-surface) 50%, var(--color-surface-variant) 75%);
+    background-size: 200% 100%;
+    animation: skeleton-pulse 1.5s ease-in-out infinite, skeleton-shimmer 1.5s ease-in-out infinite;
+    border-radius: var(--border-radius-sm);
+}
+
+@keyframes skeleton-shimmer {
+    0% { background-position: -200% 0; }
+    100% { background-position: 200% 0; }
+}
+
+/* Specific skeleton types */
+.skeleton-text {
+    height: var(--font-size-base);
+    width: 100%;
+    margin-bottom: var(--spacing-2);
+}
+
+.skeleton-text:last-child {
+    margin-bottom: 0;
+}
+
+.skeleton-avatar {
+    width: 40px;
+    height: 40px;
+    border-radius: 50%;
+}
+
+.skeleton-button {
+    height: var(--min-tap-target-size, 44px);
+    width: 120px;
+    border-radius: var(--border-radius-lg);
+}
+
+.skeleton-card {
+    padding: var(--spacing-4);
+    margin-bottom: var(--spacing-4);
+}
+
+.skeleton-card .skeleton-header {
+    height: var(--font-size-lg);
+    width: 60%;
+    margin-bottom: var(--spacing-3);
+}
+
+.skeleton-card .skeleton-content {
+    height: var(--font-size-sm);
+    width: 100%;
+    margin-bottom: var(--spacing-1);
+}
+
+.skeleton-card .skeleton-content:nth-child(2) {
+    width: 80%;
+}
+
+.skeleton-card .skeleton-content:nth-child(3) {
+    width: 90%;
+}
+
+/* Loading overlay */
+.loading-overlay {
+    position: absolute;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    background: rgba(var(--color-surface-rgb), 0.8);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    z-index: 10;
+    opacity: 0;
+    transition: opacity var(--transition-fast);
+    pointer-events: none;
+}
+
+.loading-overlay.active {
+    opacity: 1;
+    pointer-events: auto;
+}
+
+/* Loading spinner */
+.loading-spinner {
+    width: 40px;
+    height: 40px;
+    border: 3px solid var(--color-surface-variant);
+    border-top: 3px solid var(--color-primary);
+    border-radius: 50%;
+    animation: spin 1s linear infinite;
+}
+
+/* Loading bar */
+.loading-bar {
+    width: 100%;
+    height: 3px;
+    background: var(--color-surface-variant);
+    border-radius: 2px;
+    overflow: hidden;
+    position: relative;
+}
+
+.loading-bar::after {
+    content: '';
+    position: absolute;
+    width: 100%;
+    height: 100%;
+    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
+    animation: loading-bar-anim 1.5s ease-in-out infinite;
+}
+
+@keyframes loading-bar-anim {
+    0% { transform: translateX(-100%); }
+    100% { transform: translateX(100%); }
+}
+
+/* =================================================================
+   STATEFUL COMPONENTS - Interactive States
+   ================================================================= */
+
+/* State utilities for dynamic components */
+.state-loading {
+    position: relative;
+    overflow: hidden;
+}
+
+.state-loading::before {
+    content: '';
+    position: absolute;
+    top: 0;
+    left: 0;
+    right: 0;
+    bottom: 0;
+    background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.1) 50%, transparent 100%);
+    animation: state-loading-shimmer 2s infinite;
+    z-index: 1;
+}
+
+@keyframes state-loading-shimmer {
+    0% { transform: translateX(-100%); }
+    100% { transform: translateX(100%); }
+}
+
+.state-disabled {
+    opacity: 0.6;
+    pointer-events: none;
+}
+
+.state-expanded {
+    transform: rotate(180deg);
+}
+
+.state-collapsed {
+    transform: rotate(0deg);
+}
+
+.state-active {
+    background: var(--color-primary);
+    color: var(--color-on-primary);
+}
+
+.state-inactive {
+    background: var(--color-surface-variant);
+    color: var(--color-on-surface);
+}
+
 /* =================================================================
    VIDEO HEADER - Top section of video area
    ================================================================= */
diff --git a/static/css/icons.css b/static/css/icons.css
index b70daa4..b615084 100644
--- a/static/css/icons.css
+++ b/static/css/icons.css
@@ -207,6 +207,69 @@
     height: var(--current-icon-size);
 }
 
+/* =================================================================
+   ACCESSIBILITY - Screen Reader Support
+   ================================================================= */
+
+/* Screen reader only text - hide visually but available to assistive tech */
+.sr-only {
+    position: absolute;
+    width: 1px;
+    height: 1px;
+    padding: 0;
+    margin: -1px;
+    overflow: hidden;
+    clip: rect(0, 0, 0, 0);
+    white-space: nowrap;
+    border: 0;
+}
+
+/* Screen reader only - but show when focused for keyboard users */
+.sr-only:focus {
+    position: static;
+    width: auto;
+    height: auto;
+    padding: 0.5rem;
+    margin: 0;
+    overflow: visible;
+    clip: auto;
+    white-space: normal;
+    background: var(--color-surface);
+    color: var(--color-on-surface);
+    border-radius: var(--border-radius-md);
+    box-shadow: var(--elevation-3);
+    z-index: var(--z-tooltip);
+}
+
+/* =================================================================
+   FOCUS INDICATORS FOR ICON CONTROLS
+   ================================================================= */
+
+/* Base focus styles for interactive icons */
+.icon-interactive:focus {
+    outline: 2px solid var(--color-focus);
+    outline-offset: 2px;
+    border-radius: var(--border-radius-sm);
+}
+
+/* Enhanced focus ring that matches design system */
+.icon-focus-ring {
+    position: relative;
+}
+
+.icon-focus-ring:focus::after {
+    content: '';
+    position: absolute;
+    top: -2px;
+    left: -2px;
+    right: -2px;
+    bottom: -2px;
+    border: 2px solid var(--color-focus);
+    border-radius: var(--border-radius-md);
+    z-index: 1;
+    pointer-events: none;
+}
+
 /* =================================================================
    ANIMATED ICONS
    ================================================================= */