:root {
    --bg-color: #1a1a2e;
    --primary-color: #16213e;
    --secondary-color: #0f3460;
    --accent-color: #e94560;
    --text-color: #e0e0e0;
    --subtle-text-color: #a0a0c0;
    --border-color: #3a3a5e;
    --success-color: #3f9;
    --font-family: 'Inter', sans-serif;
}

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

html {
    scrollbar-color: var(--secondary-color) var(--primary-color);
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    color: var(--accent-color);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header p {
    color: var(--subtle-text-color);
    font-size: 1.1rem;
}

.editor-container {
    display: flex;
    gap: 2rem;
    height: 70vh;
}

.editor-panel {
    flex: 3;
    display: flex;
    flex-direction: column;
}

.dashboard-panel {
    flex: 2;
    background-color: var(--primary-color);
    border-radius: 8px;
    padding: 1.5rem;
    overflow-y: auto;
}

#text-input {
    width: 100%;
    height: 100%;
    background-color: var(--primary-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    font-family: var(--font-family);
    font-size: 1rem;
    padding: 1rem;
    border-radius: 8px;
    resize: vertical;
    transition: border-color 0.3s ease;
}

#text-input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.editor-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.case-converter button,
.speech-controls button {
    background-color: var(--secondary-color);
    color: var(--text-color);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    cursor: pointer;
    font-family: var(--font-family);
    transition: background-color 0.3s ease, color 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.case-converter button:hover,
.speech-controls button:hover {
    background-color: var(--accent-color);
}

.speech-controls button.active {
    background-color: var(--accent-color);
    color: white;
}

.speech-controls {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.voice-selector {
    display: flex;
    align-items: center;
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    overflow: hidden;
}

#current-voice {
    padding: 0 0.75rem;
    font-size: 0.9rem;
    color: var(--subtle-text-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 150px;
}

#btn-voice-settings {
    background-color: var(--primary-color);
    padding: 0.5rem;
    border-left: 1px solid var(--border-color);
}

.dashboard-panel h2 {
    color: var(--accent-color);
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

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

.stat-card {
    background-color: var(--secondary-color);
    padding: 1rem;
    border-radius: 8px;
}

.stat-card h3 {
    font-size: 0.9rem;
    color: var(--subtle-text-color);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.stat-card p {
    font-size: 1rem;
}

.stat-card span {
    font-weight: 600;
    color: var(--success-color);
}

.actionable-insights {
    margin-top: 1.5rem;
    background-color: var(--secondary-color);
    padding: 1rem;
    border-radius: 8px;
}

#insight-text {
    font-style: italic;
    color: var(--subtle-text-color);
}

/* MODAL STYLES */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay:not(.hidden) {
    opacity: 1;
    pointer-events: auto;
}

.modal-close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-color);
    cursor: pointer;
    line-height: 1;
    transition: transform 0.2s ease;
}
.modal-close-btn:hover {
    transform: scale(1.1);
    color: var(--accent-color);
}

/* Definition Modal */
.modal-content {
    background-color: var(--primary-color);
    padding: 2rem;
    border-radius: 8px;
    width: 90%;
    max-width: 600px;
    position: relative;
    max-height: 80vh;
    overflow-y: auto;
    border: 1px solid var(--accent-color);
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.modal-overlay:not(.hidden) .modal-content {
    transform: scale(1);
}

#modal-word {
    margin-bottom: 1rem;
}

#phonetic-display {
    color: var(--subtle-text-color);
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

#phonetic-display button {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    vertical-align: middle;
    color: var(--accent-color);
}

.modal-body h3 {
    margin-top: 1.5rem;
    color: var(--accent-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.25rem;
    margin-bottom: 0.75rem;
}

.modal-body ol, .modal-body ul {
    list-style-type: none;
    padding-left: 0;
}

.modal-body li {
    margin-bottom: 0.75rem;
    background-color: var(--secondary-color);
    padding: 0.75rem;
    border-radius: 4px;
    border-left: 3px solid var(--accent-color);
}

#synonyms-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

#synonyms-list span {
    background-color: var(--secondary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.9rem;
}

#etymology-content {
    background-color: var(--secondary-color);
    padding: 1rem;
    border-radius: 6px;
    font-style: italic;
    color: var(--subtle-text-color);
}

#translation-section {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

#language-select {
    background-color: var(--secondary-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 0.5rem;
    font-family: var(--font-family);
}
#language-select:focus {
    outline: 1px solid var(--accent-color);
}

#translation-result {
    font-weight: bold;
    color: var(--success-color);
}

/* Voice Modal */
.voice-modal {
    background-color: var(--primary-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.modal-overlay:not(.hidden) .voice-modal {
    transform: scale(1);
}

.voice-modal-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    text-align: center;
}

.voice-modal-header h2 {
    margin: 0;
    color: var(--accent-color);
}

.voice-list {
    padding: 0.5rem;
    overflow-y: auto;
    flex-grow: 1;
}

.voice-item {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s ease;
    margin-bottom: 0.25rem;
    border: 2px solid transparent;
}

.voice-item:hover {
    background-color: var(--secondary-color);
}

.voice-item.active {
    background-color: var(--secondary-color);
    border-color: var(--accent-color);
    color: var(--text-color);
    font-weight: 600;
}

.voice-item-lang {
    font-size: 0.8rem;
    color: var(--subtle-text-color);
    margin-left: 0.5rem;
}

/* ANIMATIONS */
.loader {
    border: 5px solid var(--secondary-color);
    border-top: 5px solid var(--accent-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 2rem auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* RESPONSIVE DESIGN */
@media (max-width: 992px) {
    .container { padding: 1.5rem; }
    .editor-container { flex-direction: column; height: auto; gap: 1.5rem; }
    #text-input { min-height: 40vh; max-height: 65vh; }
    .dashboard-panel { height: auto; overflow-y: visible; }
}

@media (max-width: 768px) {
    .container { padding: 1rem; }
    header h1 { font-size: 2rem; }
    header p { font-size: 1rem; }
    .stats-grid { grid-template-columns: 1fr; }
    #text-input { min-height: 45vh; }
    .modal-content, .voice-modal { width: 95%; }
    .modal-overlay { align-items: flex-start; padding-top: 5vh; }
}

@media (max-width: 480px) {
    body { font-size: 15px; }
    .editor-controls { flex-direction: column; align-items: stretch; gap: 0.75rem; }
    .case-converter { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
    .case-converter button { padding: 0.75rem 0.5rem; font-size: 0.9rem; justify-content: center; }
    .speech-controls { display: grid; grid-template-columns: 1fr auto; }
    .dashboard-panel, .stat-card, .actionable-insights { padding: 1rem; }
    .modal-content { padding: 1.5rem 1rem; max-height: 90vh; }
}