/* CSS RESET & GENERAL VARIABLES */
:root {
    /* Main Theme Colors */
    --color-bg: hsl(220, 24%, 97%);
    --color-surface: hsl(0, 0%, 100%);
    --color-text: hsl(220, 40%, 15%);
    --color-text-light: hsl(220, 15%, 45%);
    --color-border: hsl(220, 20%, 90%);
    
    --color-primary: hsl(238, 72%, 59%);
    --color-primary-light: hsl(238, 72%, 96%);
    --color-accent: hsl(155, 75%, 41%);
    
    /* Emotion Custom Color Palette */
    --color-curious: hsl(235, 80%, 60%);
    --color-curious-light: hsl(235, 80%, 95%);
    
    --color-confused: hsl(38, 92%, 50%);
    --color-confused-light: hsl(38, 92%, 94%);
    
    --color-frustrated: hsl(0, 80%, 60%);
    --color-frustrated-light: hsl(0, 80%, 95%);
    
    --color-confident: hsl(150, 70%, 40%);
    --color-confident-light: hsl(150, 70%, 93%);
    
    --color-bored: hsl(215, 18%, 55%);
    --color-bored-light: hsl(215, 18%, 94%);

    /* General Constraints */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-sm: 0 2px 8px -2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 10px 25px -8px rgba(0, 0, 0, 0.05), 0 2px 8px -2px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 20px 40px -12px rgba(0, 0, 0, 0.08);
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    color: var(--color-text);
    font-weight: 700;
}

/* APP HEADER */
.app-header {
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-icon {
    width: 28px;
    height: 28px;
    color: var(--color-primary);
}

.brand-name {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--color-text);
}

.brand-tag {
    font-size: 0.85rem;
    color: var(--color-text-light);
    border-left: 1px solid var(--color-border);
    padding-left: 0.75rem;
    margin-left: 0.25rem;
    font-weight: 500;
}

.nav-links {
    display: flex;
    gap: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.1rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--color-text-light);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.nav-link i {
    width: 18px;
    height: 18px;
}

.nav-link:hover {
    color: var(--color-primary);
    background-color: var(--color-primary-light);
}

.nav-link.active {
    color: var(--color-primary);
    background-color: var(--color-primary-light);
}

/* MAIN LAYOUT */
.main-container {
    flex: 1;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2.5rem 2rem;
}

.app-view {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.app-view.active {
    display: block;
}

/* CARDS */
.card {
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    padding: 2rem;
    transition: box-shadow var(--transition-normal), transform var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.card-header i {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.card-header h2 {
    font-size: 1.4rem;
    font-weight: 700;
}

/* FORM STYLING */
.form-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-text);
}

/* Custom Dropdown select wrapper */
.select-wrapper {
    position: relative;
    width: 100%;
}

.select-wrapper select {
    width: 100%;
    padding: 0.85rem 1rem;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--color-border);
    background-color: var(--color-surface);
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--color-text);
    appearance: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

.select-wrapper select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.select-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    width: 18px;
    height: 18px;
    color: var(--color-text-light);
}

textarea {
    width: 100%;
    min-height: 150px;
    padding: 1rem;
    border-radius: var(--radius-md);
    border: 1.5px solid var(--color-border);
    background-color: var(--color-surface);
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--color-text);
    resize: vertical;
    transition: var(--transition-fast);
}

textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* TOGGLE CONTROLS */
.control-row {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    padding: 1rem 0;
    border-top: 1px dashed var(--color-border);
    border-bottom: 1px dashed var(--color-border);
}

.toggle-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.toggle-label {
    display: flex;
    flex-direction: column;
}

.toggle-label strong {
    font-size: 0.95rem;
    color: var(--color-text);
}

.toggle-desc {
    font-size: 0.8rem;
    color: var(--color-text-light);
}

/* SWITCH SLIDER */
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
    flex-shrink: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-border);
    transition: .3s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .3s;
}

input:checked + .slider {
    background-color: var(--color-accent);
}

input:focus + .slider {
    box-shadow: 0 0 1px var(--color-accent);
}

input:checked + .slider:before {
    transform: translateX(24px);
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

/* SEGMENTED CONTROL */
.segmented-control {
    display: flex;
    background-color: var(--color-bg);
    padding: 3px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

.segmented-control input {
    display: none;
}

.segmented-control label {
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    color: var(--color-text-light);
    transition: var(--transition-fast);
    text-align: center;
}

.segmented-control input:checked + label {
    background-color: var(--color-surface);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

/* BUTTONS */
.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    padding: 0.9rem 1.75rem;
    font-size: 1rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: none;
    font-family: 'Outfit', sans-serif;
    transition: var(--transition-fast);
    position: relative;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background-color: hsl(238, 72%, 52%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: var(--radius-sm);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    cursor: pointer;
    color: var(--color-text-light);
    transition: var(--transition-fast);
}

.btn-icon:hover {
    color: var(--color-primary);
    background-color: var(--color-primary-light);
}

/* WORKSPACE GRID SPLIT */
.workspace-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    align-items: start;
}

@media (min-width: 992px) {
    .workspace-grid {
        grid-template-columns: 1fr 1.25fr;
    }
    .control-row {
        flex-direction: row;
        justify-content: space-between;
    }
}

/* EMPTY STATE CARD */
.empty-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 400px;
    padding: 3rem;
    border: 2px dashed var(--color-border);
}

.empty-icon {
    width: 56px;
    height: 56px;
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
    opacity: 0.7;
    animation: pulse 2s infinite ease-in-out;
}

.empty-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.empty-card p {
    color: var(--color-text-light);
    max-width: 320px;
    font-size: 0.95rem;
}

/* RESULTS PANEL */
.results-column {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* FEEDBACK BALLOON */
.feedback-card {
    background: linear-gradient(135deg, hsl(238, 72%, 99%) 0%, hsl(238, 72%, 97%) 100%);
    border: 1px solid hsl(238, 72%, 90%);
}

.feedback-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}

.feedback-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.feedback-icon {
    color: var(--color-primary);
    width: 22px;
    height: 22px;
}

.feedback-body {
    font-size: 1.05rem;
    color: var(--color-text);
}

.feedback-body p {
    margin-bottom: 1rem;
}

.feedback-body p:last-child {
    margin-bottom: 0;
}

.feedback-body ul, .feedback-body ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.feedback-body li {
    margin-bottom: 0.4rem;
}

/* COMPARISON DUAL GRID */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .comparison-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.model-card {
    padding: 1.5rem;
}

.border-model-a {
    border-top: 5px solid var(--color-primary);
}

.border-model-b {
    border-top: 5px solid var(--color-accent);
}

.model-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.model-badge {
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.label-a {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
}

.label-b {
    background-color: hsl(155, 75%, 94%);
    color: var(--color-accent);
}

.model-header h4 {
    font-size: 1.1rem;
    font-weight: 700;
}

/* EMOTION REPRESENTATIONS */
.emotion-results-wrapper {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.label {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--color-text-light);
    margin-bottom: 0.5rem;
    letter-spacing: 0.5px;
}

/* Large Badge Primary */
.emotion-badge-large {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 1.2rem;
    border-radius: 100px;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    transition: var(--transition-fast);
}

.badge-emoji {
    width: 20px;
    height: 20px;
}

.badge-confidence {
    font-size: 0.85rem;
    font-weight: 600;
    opacity: 0.8;
    padding-left: 0.4rem;
    border-left: 1px solid rgba(0, 0, 0, 0.15);
}

/* Mixed Emotion Badges */
.mixed-badges-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.emotion-badge-small {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.8rem;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
}

.emotion-badge-small .score {
    font-size: 0.75rem;
    opacity: 0.75;
}

/* EMOTION COLOR RULES */
.emotion-curious {
    background-color: var(--color-curious-light);
    color: var(--color-curious);
}
.emotion-confused {
    background-color: var(--color-confused-light);
    color: var(--color-confused);
}
.emotion-frustrated {
    background-color: var(--color-frustrated-light);
    color: var(--color-frustrated);
}
.emotion-confident {
    background-color: var(--color-confident-light);
    color: var(--color-confident);
}
.emotion-bored {
    background-color: var(--color-bored-light);
    color: var(--color-bored);
}

/* BAR CHARTS */
.bars-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.bar-row {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.bar-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 600;
}

.bar-label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--color-text);
}

.bar-label i {
    width: 14px;
    height: 14px;
}

.bar-val {
    color: var(--color-text-light);
}

.bar-track {
    width: 100%;
    height: 8px;
    background-color: var(--color-bg);
    border-radius: 100px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    width: 0%;
    border-radius: 100px;
    transition: width 0.8s cubic-bezier(0.1, 0.8, 0.2, 1);
}

/* Progress bar fill colors */
.bg-curious { background-color: var(--color-curious); }
.bg-confused { background-color: var(--color-confused); }
.bg-frustrated { background-color: var(--color-frustrated); }
.bg-confident { background-color: var(--color-confident); }
.bg-bored { background-color: var(--color-bored); }

/* ANALYTICS VIEW */
.analytics-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    align-items: start;
}

@media (min-width: 992px) {
    .analytics-layout {
        grid-template-columns: 1.25fr 1fr;
    }
}

.chart-card {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.chart-subtitle {
    color: var(--color-text-light);
    margin-bottom: 2rem;
    text-align: center;
    max-width: 480px;
    font-size: 0.95rem;
}

.chart-wrapper {
    width: 100%;
    max-width: 380px;
    height: 380px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chart-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    height: 300px;
    color: var(--color-text-light);
}

.chart-empty i {
    width: 48px;
    height: 48px;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-box {
    background-color: var(--color-bg);
    border-radius: var(--radius-md);
    padding: 1.25rem 1rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border: 1px solid var(--color-border);
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--color-text-light);
    margin-bottom: 0.5rem;
    letter-spacing: 0.5px;
}

.stat-number {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
}

.insights-notes {
    border-top: 1px solid var(--color-border);
    padding-top: 1.5rem;
}

.insights-notes h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}

.insights-notes p {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* HISTORY VIEW */
.history-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.log-count {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    font-size: 0.8rem;
    font-weight: 700;
    padding: 0.4rem 0.8rem;
    border-radius: 100px;
}

.table-container {
    width: 100%;
    overflow-x: auto;
    margin-top: 1.5rem;
}

.history-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}

.history-table th {
    background-color: var(--color-bg);
    padding: 1rem;
    font-weight: 700;
    color: var(--color-text-light);
    border-bottom: 2px solid var(--color-border);
    font-family: 'Outfit', sans-serif;
}

.history-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    max-width: 250px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-table tr:hover {
    background-color: var(--color-bg);
}

.table-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
    color: var(--color-text-light);
}

.table-empty i {
    width: 44px;
    height: 44px;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* SPINNER LOADER */
.loader-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2.5px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

/* ANIMATIONS */
@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.05); opacity: 0.9; }
    100% { transform: scale(1); opacity: 0.6; }
}

/* FOOTER */
.app-footer {
    text-align: center;
    padding: 2rem;
    margin-top: auto;
    font-size: 0.85rem;
    color: var(--color-text-light);
    border-top: 1px solid var(--color-border);
    background-color: var(--color-surface);
}

.hidden {
    display: none !important;
}