/* --- GitHub Inspired Theme --- */
:root {
    --bg-color: #0d1117;
    --border-color: #30363d;
    --panel-bg: #161b22;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --text-secondary-line: #f0a836;
    --text-link: #58a6ff;
    --input-bg: #010409;
    --button-bg: #21262d;
    --button-hover-bg: #30363d;
    --button-border: #30363d;
    --primary-button-bg: #238636;
    --primary-button-hover-bg: #2ea043;
    --danger-button-bg: #da3633;
    --danger-button-hover-bg: #f85149;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    --border-radius: 6px;
}

/* --- Light Theme Overrides --- */
body.light-theme {
    --bg-color: #f6f8fa;
    --border-color: #d0d7de;
    --panel-bg: #ffffff;
    --text-primary: #24292f;
    --text-secondary: #57606a;
    --text-secondary-line: #cf222e;
    --text-link: #0969da;
    --input-bg: #ffffff;
    --button-bg: #f6f8fa;
    --button-hover-bg: #eaeef2;
    --button-border: #d0d7de;
    --primary-button-bg: #2da44e;
    --primary-button-hover-bg: #2c974b;
    --danger-button-bg: #cf222e;
    --danger-button-hover-bg: #a40e26;
}


/* --- Base Styles --- */
body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    margin: 0;
    height: 100vh;
    overflow: hidden; /* Prevent body scroll */
}

a {
    color: var(--text-link);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

.hidden {
    display: none !important;
}

/* --- Main App Layout --- */
.app-container {
    display: grid;
    grid-template-columns: 320px 1fr; /* Left panel fixed width, main panel takes rest */
    grid-template-rows: auto 1fr;
    grid-template-areas:
        "header header"
        "left main";
    height: 100vh;
    gap: 1rem;
    padding: 1rem;
    box-sizing: border-box;
}

.app-header {
    grid-area: header;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.app-header .logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.2rem;
    text-decoration: none;
    color: #fff;
}
.app-header .logo h1 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 500;
    text-decoration: none;
    color: #fff;
}
.app-header .header-info {
    text-align: right;
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.app-header .header-info p {
    margin: 0 0 0.25rem 0;
}

/* --- Theme Toggle & Header Adjustments --- */
.header-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 0.25rem;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    background-color: var(--button-bg);
    border: 1px solid var(--button-border);
    color: var(--text-primary);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s, color 0.2s;
}

.theme-toggle:hover {
    background-color: var(--button-hover-bg);
}

.theme-toggle i {
    font-size: 0.9rem;
}

.theme-toggle-label {
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Visually indicate pressed state */
.theme-toggle[aria-pressed="true"] {
    background-color: var(--primary-button-bg);
    color: #ffffff;
    border-color: transparent;
}

/* Make header logo readable on light background */
body.light-theme .app-header .logo,
body.light-theme .app-header .logo h1 {
    color: #24292f;
}



/* --- Panel Styles --- */
.left-panel, .main-panel {
    background-color: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    overflow: hidden; /* Prevent panels from overflowing */
}

.left-panel {
    grid-area: left;
}

.main-panel {
    grid-area: main;
}

.panel-header {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    background-color: var(--panel-bg);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}
.panel-header h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.panel-content {
    padding: 1rem;
    overflow-y: auto; /* Allow content to scroll */
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.panel-content h4 {
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
    font-weight: 500;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.voice-info {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-align: center;
    margin: -0.5rem 0 1rem 0;
}

.custom-group {
    color: #ff5733;
    font-style: normal;
}
.custom-group option {
    color: #000;
}

/* =========================
   Collapsible Left Panel
   ========================= */

.left-panel-header {
  position: relative;
  padding-right: 3rem; /* leaves room so the h3 doesn't run under the button */
}

/* Pin toggle to the far-right edge of the header */
.left-panel-header .panel-toggle-btn {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
}

.left-panel-placeholder {
  padding: 0.75rem 0.85rem;
  margin-bottom: 0.5rem;
  border: 1px dashed var(--border-color);
  border-radius: 10px;
  color: var(--text-secondary);
  font-style: italic;
  line-height: 1.35;
}

/* When collapsed, center the toggle button in the header */
.app-container.left-panel-collapsed .left-panel-header .panel-toggle-btn {
  left: 50%;
  right: auto;
  top: 50%;
  transform: translate(-50%, -50%);
}

.panel-toggle-btn {
    background: var(--button-bg);
    border: 1px solid var(--button-border);
    color: var(--text-primary);
    width: 32px;
    height: 32px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s, transform 0.2s;
    flex-shrink: 0;
}

.panel-toggle-btn:hover {
    background-color: var(--button-hover-bg);
}

.panel-toggle-btn:focus {
    outline: none;
    border-color: var(--text-link);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.3);
}

/* Footer inside left panel */
.left-panel-footer {
    border-top: 1px solid var(--border-color);
    padding: 0.75rem 0.85rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.35;
}

/* Collapsed state */
.app-container.left-panel-collapsed {
    grid-template-columns: 52px 1fr; /* narrow rail */
}

/* Hide content + footer when collapsed */
.app-container.left-panel-collapsed .left-panel .panel-content,
.app-container.left-panel-collapsed .left-panel .left-panel-footer {
    display: none !important;
}

/* Hide title when collapsed */
.app-container.left-panel-collapsed .left-panel .panel-header h3 {
    display: none !important;
}

/* Center toggle button when collapsed */
.app-container.left-panel-collapsed .left-panel .panel-header {
    justify-content: center;
    padding: 0.75rem 0.5rem;
}


/* --- Script Editor --- */
.script-editor {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    padding: 1rem;
    padding-top: 0;
}
textarea#script-input {
    width: 100%;
    height: 100%;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 16px; /* Default size, will be controlled by JS */
    line-height: 1.6;
    color: var(--text-primary);
    resize: none;
    box-sizing: border-box;
    padding: 1rem;
    font-family: 'Courier New', monospace;
}
#font-family-select {
    max-width: 220px;
    font-size: 0.8rem;
    white-space: nowrap;
}

textarea#script-input:focus {
    outline: 2px solid var(--text-link);
    border-color: var(--text-link);
}

#file-label-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    text-align: right;
    min-height: 1em;
}

.script-actions {
    margin-left: auto; /* Pushes this block to the right */
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.script-actions .separator {
    color: var(--border-color);
    margin: 0;
}

.link-style-btn {
    background: none;
    border: none;
    padding: 0;
    font-size: 0.85rem;
    color: var(--text-link);
    cursor: pointer;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.link-style-btn:hover {
    text-decoration: underline;
}

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

#font-size-display {
    color: var(--text-secondary);
    background-color: var(--input-bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    min-width: 3em;
    text-align: center;
    font-size: 0.8rem;
}

.process-bar {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--panel-bg);
    display: flex;
    justify-content: center;
    flex-shrink: 0;
}

/* --- Input & Form Styles --- */
.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
label {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-primary);
}
.required {
    color: var(--danger-button-bg);
}
input[type="password"],
input[type="number"],
select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    color: var(--text-primary);
    box-sizing: border-box;
    transition: border-color 0.2s, box-shadow 0.2s;
}
input:focus, select:focus {
    outline: none;
    border-color: var(--text-link);
    box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.3);
}

/* --- Voice & Cast List Styles --- */
.voice-assignment-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}
.voice-assignment {
    display: grid;
    grid-template-columns: 100px 1fr;
    align-items: center;
    gap: 0.5rem;
}
.voice-assignment label {
    font-weight: 400;
    text-align: right;
    font-size: 0.85rem;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

#cast-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.cast-list-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}
.cast-list-item .character {
    font-weight: 500;
    color: var(--text-primary);
}
.cast-list-item .voice {
    color: var(--text-secondary);
}

/* --- Button Styles --- */
.primary-btn, .secondary-btn {
    padding: 0.6rem 1.2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--button-border);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background-color 0.2s;
}
.primary-btn {
    background-color: var(--primary-button-bg);
    color: #ffffff;
    border-color: rgba(240, 246, 252, 0.1);
}
.primary-btn:hover {
    background-color: var(--primary-button-hover-bg);
}
.secondary-btn {
    background-color: var(--button-bg);
    color: var(--text-primary);
}
.secondary-btn:hover {
    background-color: var(--button-hover-bg);
    border-color: #8b949e;
}

/* --- Lower Panel & Playback Controls --- */
.lower-panel {
    border-top: 1px solid var(--border-color);
    background-color: var(--panel-bg);
    padding: 0.75rem;
    flex-shrink: 0;
}
.controls {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.timeline-group {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.line-display-area {
    font-size: 0.8rem;
    color: var(--text-secondary-line);
    background-color: var(--button-bg);
    padding: 0.25rem 0.6rem;
    border-radius: 10px;
    white-space: nowrap;
}

.button-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}
.control-btn {
    background-color: var(--button-bg);
    color: var(--text-primary);
    border: 1px solid var(--button-border);
    border-radius: var(--border-radius);
    width: 36px;
    height: 36px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: background-color 0.2s;
}
.control-btn:hover:not(:disabled) {
    background-color: var(--button-hover-bg);
}
.control-btn.play-btn {
    background-color: var(--primary-button-bg);
    color: #fff;
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
}
.control-btn.play-btn:hover:not(:disabled) {
    background-color: var(--primary-button-hover-bg);
}
.control-btn.stop-btn {
    background-color: var(--danger-button-bg);
    color: #fff;
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
}
.control-btn.stop-btn:hover:not(:disabled) {
    background-color: var(--danger-button-hover-bg);
}
.control-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: var(--button-bg) !important;
    color: var(--text-secondary) !important;
}

#line-jump-input {
    width: 50px;
    text-align: center;
    padding: 0.4rem;
}
.go-to-line-container {
    display: flex;
    align-items: center;
}
#go-to-line-input {
    width: 80px;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border-right: 0;
}
.go-btn {
    padding: 0.5rem 0.75rem;
    background-color: var(--button-bg);
    color: var(--text-primary);
    border: 1px solid var(--button-border);
    border-radius: var(--border-radius);
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    cursor: pointer;
    font-size: 0.9rem;
}
.go-btn:hover {
    background-color: var(--button-hover-bg);
}

.timeline-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: var(--input-bg);
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}
.timeline-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--text-primary);
    border-radius: 50%;
    cursor: pointer;
}
.timeline-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--text-primary);
    border-radius: 50%;
    cursor: pointer;
}

.status {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    min-height: 1.2em;
    margin-top: 0.5rem;
}
.status p {
    margin: 0;
}

/* --- Modal Styles --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    padding: 1rem;
    backdrop-filter: blur(5px);
}
.modal-content {
    background: var(--panel-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 30px rgba(0,0,0,0.5);
    width: 100%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.modal-content h2 {
    text-align: center;
    margin: 0;
    font-size: 1.5rem;
    font-weight: 500;
}
.modal-content p {
    text-align: center;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}
.modal-content .italic-note {
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.modal-content #cast-list-input {
    min-height: 150px;
    font-family: monospace;
}
.modal-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

/* --- Responsive Design --- */
@media (max-width: 900px) {
    .app-container {
        grid-template-columns: 280px 1fr;
    }
}

@media (max-width: 767px) {
    .app-container {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto 1fr; /* Header, Left Panel, Main Panel */
        grid-template-areas:
            "header"
            "left"
            "main";
        overflow-y: auto;
    }
    .left-panel {
        max-height: 300px; /* Give it a max height on mobile */
    }
    .main-panel {
        min-height: 400px; /* Ensure main panel has enough height */
    }
    .app-header .header-info {
        display: none; /* Hide extra info on small screens */
    }
    .button-row {
        flex-wrap: wrap;
    }
}

/* API key error highlight + quick shake */
.input-error {
    border-color: var(--danger-button-bg) !important;
    box-shadow: 0 0 0 3px rgba(218, 54, 51, 0.25) !important;
    animation: dl-shake 180ms ease-in-out 0s 2;
}

@keyframes dl-shake {
    0%   { transform: translateX(0); }
    25%  { transform: translateX(-4px); }
    50%  { transform: translateX(4px); }
    75%  { transform: translateX(-3px); }
    100% { transform: translateX(0); }
}