/* ===================================
   Modern Interactive Enhancements
   Additional styles for more modern neumorphic design
   =================================== */

/* Enhanced Logo with Gradient Text */
.logo {
    background: var(--primary-gradient) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
    animation: logoGlow 3s ease-in-out infinite;
}

@keyframes logoGlow {
    0%, 100% { filter: drop-shadow(0 0 8px rgba(108, 99, 255, 0.3)); }
    50% { filter: drop-shadow(0 0 16px rgba(108, 99, 255, 0.5)); }
}

.logo i {
    background: var(--primary-gradient) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
    animation: pulse 2s ease-in-out infinite;
}

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

/* Enhanced Buttons with Ripple Effect */
.neu-button {
    position: relative;
    overflow: hidden;
    border-radius: 16px !important;
    transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.neu-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(108, 99, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.neu-button:hover::before {
    width: 300px;
    height: 300px;
}

.neu-button:hover {
    transform: translateY(-3px) scale(1.02) !important;
}

.neu-button:active {
    box-shadow: var(--neu-shadow-active) !important;
    transform: translateY(0) scale(0.98) !important;
}

/* Primary Button Shimmer Effect */
.neu-button.primary {
    background: var(--primary-gradient) !important;
    box-shadow: var(--neu-shadow), 0 0 20px rgba(108, 99, 255, 0.3) !important;
}

.neu-button.primary::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: rotate(45deg);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.neu-button.primary:hover {
    background: linear-gradient(135deg, #7b72ff 0%, #8a5fc7 100%) !important;
    box-shadow: var(--neu-shadow-hover), 0 0 30px rgba(108, 99, 255, 0.5) !important;
    transform: translateY(-3px) scale(1.05) !important;
}

/* Enhanced Cards with Top Border Animation */
.neu-card {
    border-radius: 24px !important;
    transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1) !important;
    position: relative;
    overflow: hidden;
}

.neu-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-normal) ease;
    z-index: 1;
}

.neu-card:hover::before {
    transform: scaleX(1);
}

.neu-card:hover {
    transform: translateY(-4px) !important;
}

/* Enhanced Question Cards with Slide Effect */
.question-card {
    transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1) !important;
    overflow: hidden;
}

.question-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(108, 99, 255, 0.1), transparent);
    transition: left 0.5s ease;
    z-index: 0;
}

.question-card:hover::after {
    left: 100%;
}

.question-card:hover {
    box-shadow: var(--neu-shadow-hover), 0 0 30px rgba(108, 99, 255, 0.2) !important;
    transform: translateY(-8px) scale(1.02) !important;
}

.question-card:active {
    transform: translateY(-4px) scale(1) !important;
}

/* Enhanced Badges with Hover Effects */
.badge {
    padding: 6px 14px !important;
    border-radius: 12px !important;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-fast) ease !important;
}

.badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.badge:hover::before {
    left: 100%;
}

.badge.category {
    background: var(--primary-gradient) !important;
    box-shadow: 0 4px 15px rgba(108, 99, 255, 0.3);
}

.badge.category:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(108, 99, 255, 0.4);
}

.badge.type {
    background: linear-gradient(135deg, #42a5f5 0%, #2196F3 100%) !important;
    box-shadow: 0 4px 15px rgba(33, 150, 243, 0.3);
}

.badge.type:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(33, 150, 243, 0.4);
}

/* Enhanced Stat Cards with Side Border */
.stat-card {
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal) ease !important;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-gradient);
    transform: scaleY(0);
    transition: transform var(--transition-normal) ease;
}

.stat-card:hover::before {
    transform: scaleY(1);
}

.stat-card:hover {
    transform: translateX(5px) !important;
}

.stat-card i {
    background: var(--primary-gradient) !important;
    -webkit-background-clip: text !important;
    -webkit-text-fill-color: transparent !important;
    background-clip: text !important;
    animation: iconFloat 3s ease-in-out infinite;
}

@keyframes iconFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

/* Enhanced Tabs with Bottom Border Animation */
.tab-btn {
    border-radius: 16px !important;
    transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1) !important;
    position: relative;
    overflow: hidden;
}

.tab-btn::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-normal) ease;
}

.tab-btn:hover::before {
    transform: scaleX(1);
}

.tab-btn:hover {
    transform: translateY(-3px) !important;
}

.tab-btn.active {
    background: var(--primary-gradient) !important;
    box-shadow: var(--neu-shadow), 0 0 20px rgba(108, 99, 255, 0.4) !important;
    animation: tabPulse 2s ease-in-out infinite;
}

@keyframes tabPulse {
    0%, 100% { box-shadow: var(--neu-shadow), 0 0 20px rgba(108, 99, 255, 0.4); }
    50% { box-shadow: var(--neu-shadow), 0 0 30px rgba(108, 99, 255, 0.6); }
}

.tab-btn.active::before {
    transform: scaleX(1);
}

/* Enhanced Pills with Ripple Effect */
.pill {
    padding: 8px 18px !important;
    border-radius: 24px !important;
    transition: all var(--transition-fast) cubic-bezier(0.4, 0, 0.2, 1) !important;
    position: relative;
    overflow: hidden;
}

.pill::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(108, 99, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.4s, height 0.4s;
}

.pill:hover::after {
    width: 200px;
    height: 200px;
}

.pill:hover {
    transform: scale(1.05) !important;
}

.pill.active {
    background: var(--primary-gradient) !important;
    box-shadow: var(--neu-shadow), 0 0 15px rgba(108, 99, 255, 0.4) !important;
    transform: scale(1.05) !important;
}

.pill.active::after {
    width: 200px;
    height: 200px;
}

/* Enhanced Search Bar with Focus Glow */
.search-bar {
    transition: all var(--transition-normal) ease;
}

.search-bar:focus-within {
    box-shadow: var(--neu-shadow-hover), 0 0 20px rgba(108, 99, 255, 0.2);
    transform: translateY(-2px);
}

.search-bar input:focus {
    color: var(--primary-color);
}

/* Enhanced File Dropzone with Pulse Animation */
.file-dropzone {
    position: relative;
    overflow: hidden;
}

.file-dropzone::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(108, 99, 255, 0.1) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    animation: dropzonePulse 3s ease-in-out infinite;
}

@keyframes dropzonePulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.5); opacity: 0.2; }
}

.file-dropzone:hover::before {
    animation: dropzonePulse 1.5s ease-in-out infinite;
}

.file-dropzone i {
    position: relative;
    z-index: 1;
    animation: iconBounce 2s ease-in-out infinite;
}

@keyframes iconBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Enhanced Upload Tabs with Slide Effect */
.upload-tab {
    position: relative;
    overflow: hidden;
}

.upload-tab::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-normal) ease;
}

.upload-tab:hover::after {
    transform: scaleX(1);
}

.upload-tab.active::after {
    transform: scaleX(1);
}

/* Enhanced Preview Flashcards with 3D Effect */
.preview-flashcard {
    transition: all var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1) !important;
    transform-style: preserve-3d;
}

.preview-flashcard:hover {
    transform: translateY(-5px) rotateX(2deg) !important;
    box-shadow: var(--neu-shadow-hover), 0 10px 40px rgba(108, 99, 255, 0.2) !important;
}

.preview-flashcard.selected {
    border: 2px solid transparent !important;
    background: linear-gradient(var(--surface), var(--surface)) padding-box,
                var(--primary-gradient) border-box !important;
    animation: selectedPulse 2s ease-in-out infinite;
}

@keyframes selectedPulse {
    0%, 100% { box-shadow: var(--neu-shadow-hover), 0 0 20px rgba(108, 99, 255, 0.3); }
    50% { box-shadow: var(--neu-shadow-hover), 0 0 30px rgba(108, 99, 255, 0.5); }
}

/* Enhanced Progress Bar with Gradient Animation */
.progress-fill {
    background: var(--primary-gradient) !important;
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: progressShimmer 2s infinite;
}

@keyframes progressShimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Enhanced Modal with Backdrop Blur */
.modal {
    backdrop-filter: blur(10px);
    background: rgba(0, 0, 0, 0.6) !important;
}

.modal-content {
    animation: modalSlideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Enhanced Close Button with Rotation */
.close-btn {
    transition: all var(--transition-normal) ease !important;
}

.close-btn:hover {
    transform: rotate(90deg) scale(1.1) !important;
}

/* Enhanced Form Inputs with Glow on Focus */
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    box-shadow: var(--neu-shadow-inset), 0 0 0 3px rgba(108, 99, 255, 0.2), 0 0 20px rgba(108, 99, 255, 0.1) !important;
}

/* Enhanced Favorite Button with Star Animation */
.favorite-btn {
    transition: all var(--transition-normal) ease !important;
}

.favorite-btn:hover {
    transform: scale(1.2) rotate(15deg);
}

.favorite-btn.active {
    animation: starTwinkle 1s ease-in-out infinite;
}

@keyframes starTwinkle {
    0%, 100% { transform: scale(1); filter: drop-shadow(0 0 5px #FFD700); }
    50% { transform: scale(1.1); filter: drop-shadow(0 0 10px #FFD700); }
}

/* Enhanced Tags with Hover Lift */
.tag {
    transition: all var(--transition-fast) ease !important;
}

.tag:hover {
    transform: translateY(-2px);
    box-shadow: var(--neu-shadow) !important;
    color: var(--primary-color) !important;
}

/* Enhanced Icon Buttons with Rotation */
.icon-btn {
    transition: all var(--transition-normal) ease !important;
}

.icon-btn:hover {
    transform: scale(1.2) rotate(10deg) !important;
}

.icon-btn.delete-btn:hover {
    color: var(--error) !important;
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0) scale(1.2); }
    25% { transform: translateX(-5px) scale(1.2) rotate(-10deg); }
    75% { transform: translateX(5px) scale(1.2) rotate(10deg); }
}

/* Enhanced Toast with Slide and Bounce */
.toast {
    animation: toastSlideIn 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes toastSlideIn {
    from {
        transform: translateX(400px) scale(0.8);
        opacity: 0;
    }
    to {
        transform: translateX(0) scale(1);
        opacity: 1;
    }
}

.toast.show {
    animation: toastBounce 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes toastBounce {
    0% { transform: translateX(400px); }
    60% { transform: translateX(-20px); }
    80% { transform: translateX(10px); }
    100% { transform: translateX(0); }
}

/* Enhanced Job Item with Slide Effect */
.job-item {
    transition: all var(--transition-normal) ease !important;
    position: relative;
}

.job-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: var(--primary-gradient);
    transform: scaleY(0);
    transition: transform var(--transition-normal) ease;
}

.job-item:hover::before {
    transform: scaleY(1);
}

.job-item:hover {
    transform: translateX(5px) !important;
}

.job-item-icon {
    background: var(--primary-gradient) !important;
    box-shadow: 0 4px 15px rgba(108, 99, 255, 0.3);
    animation: iconRotate 10s linear infinite;
}

@keyframes iconRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.job-item:hover .job-item-icon {
    animation: iconRotate 2s linear infinite;
}

/* Enhanced Slider Thumb with Pulse */
.slider-container input[type="range"]::-webkit-slider-thumb {
    background: var(--primary-gradient) !important;
    box-shadow: var(--neu-shadow-small), 0 0 10px rgba(108, 99, 255, 0.3) !important;
    transition: all var(--transition-fast) ease;
}

.slider-container input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: var(--neu-shadow), 0 0 15px rgba(108, 99, 255, 0.5) !important;
}

.slider-container input[type="range"]::-moz-range-thumb {
    background: var(--primary-gradient) !important;
    box-shadow: var(--neu-shadow-small), 0 0 10px rgba(108, 99, 255, 0.3) !important;
    transition: all var(--transition-fast) ease;
}

.slider-container input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: var(--neu-shadow), 0 0 15px rgba(108, 99, 255, 0.5) !important;
}

/* Enhanced Slider Value with Bounce */
.slider-value {
    animation: valueBounce 0.3s ease;
}

@keyframes valueBounce {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* Enhanced Edit Button with Icon Rotation */
.edit-flashcard-btn:hover i {
    animation: iconSpin 0.5s ease;
}

@keyframes iconSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Enhanced Checkbox with Scale Animation */
.preview-flashcard-checkbox input[type="checkbox"] {
    transition: all var(--transition-fast) ease;
}

.preview-flashcard-checkbox input[type="checkbox"]:hover {
    transform: scale(1.2);
}

.preview-flashcard-checkbox input[type="checkbox"]:checked {
    animation: checkboxPop 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes checkboxPop {
    0% { transform: scale(0.8); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* Enhanced Scrollbar with Gradient */
::-webkit-scrollbar-thumb {
    background: var(--primary-gradient) !important;
    border-radius: 10px !important;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #7b72ff 0%, #8a5fc7 100%) !important;
}

/* Floating Animation for Icons */
.progress-icon i {
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* Stagger Animation for Question Cards */
.question-card:nth-child(1) { animation-delay: 0s; }
.question-card:nth-child(2) { animation-delay: 0.1s; }
.question-card:nth-child(3) { animation-delay: 0.2s; }
.question-card:nth-child(4) { animation-delay: 0.3s; }
.question-card:nth-child(5) { animation-delay: 0.4s; }
.question-card:nth-child(6) { animation-delay: 0.5s; }

/* Stagger Animation for Tabs */
.tab-btn:nth-child(1) { animation-delay: 0s; }
.tab-btn:nth-child(2) { animation-delay: 0.05s; }
.tab-btn:nth-child(3) { animation-delay: 0.1s; }
.tab-btn:nth-child(4) { animation-delay: 0.15s; }
.tab-btn:nth-child(5) { animation-delay: 0.2s; }
.tab-btn:nth-child(6) { animation-delay: 0.25s; }
.tab-btn:nth-child(7) { animation-delay: 0.3s; }
.tab-btn:nth-child(8) { animation-delay: 0.35s; }
.tab-btn:nth-child(9) { animation-delay: 0.4s; }
.tab-btn:nth-child(10) { animation-delay: 0.45s; }

/* Enhanced Stat Info with Number Counter Animation */
.stat-info h3 {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Micro-interactions for Better UX */
button, .pill, .tab-btn, .badge, .tag {
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

/* Smooth transitions for all interactive elements */
* {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Enhanced Modal Header with Gradient */
.modal-header h2 {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Enhanced Config Section with Glow */
.config-section {
    position: relative;
}

.config-section::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--primary-gradient);
    border-radius: 17px;
    opacity: 0;
    transition: opacity var(--transition-normal) ease;
    z-index: -1;
}

.config-section:hover::before {
    opacity: 0.1;
}

/* Loading Spinner Enhancement */
.loading i {
    animation: spinGlow 1.5s linear infinite;
}

@keyframes spinGlow {
    0% { transform: rotate(0deg); filter: drop-shadow(0 0 5px rgba(108, 99, 255, 0.5)); }
    50% { filter: drop-shadow(0 0 15px rgba(108, 99, 255, 0.8)); }
    100% { transform: rotate(360deg); filter: drop-shadow(0 0 5px rgba(108, 99, 255, 0.5)); }
}

/* Answered Indicator with Pulse */
.answered-indicator {
    animation: checkPulse 2s ease-in-out infinite;
}

@keyframes checkPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

/* Enhanced Header with Glassmorphism */
.header {
    backdrop-filter: blur(10px);
    background: rgba(224, 229, 236, 0.95) !important;
}

[data-theme="dark"] .header {
    background: rgba(22, 33, 62, 0.95) !important;
}

/* Particle Effect on Hover (Optional - can be toggled) */
@keyframes particleFloat {
    0% { transform: translateY(0) translateX(0); opacity: 1; }
    100% { transform: translateY(-100px) translateX(50px); opacity: 0; }
}