/* Import Google Fonts & Icons */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@24,400,0,0');

/* --- THEME DEFINITIONS --- */
:root {
    --font-family: 'Inter', sans-serif;
    --transition-speed: 0.3s;
    --border-radius-lg: 24px;
    --border-radius-md: 12px;
    --music-track-color: transparent;
    --sfx-track-color: #ff9800; /* New color for SFX */
}

.dark-theme {
    --text-main: #e2e8f0;
    --text-subtle: #94a3b8;
    --text-heading: #ffffff;
    --bg-color: #0b1120;
    --glass-bg: rgba(30, 41, 59, 0.5);
    --glass-border: rgba(255, 255, 255, 0.1);
    --primary: #5887ff;
    --primary-hover: #7ea3ff;
    --secondary-bg: rgba(255, 255, 255, 0.05);
    --secondary-hover: rgba(255, 255, 255, 0.1);
    --select-bg: #1e293b;
    --aurora1: #5887ff;
    --aurora2: #ff58e4;
    --aurora3: #33ffc3;
    --success-color: #33ffc3;
    --error-color: #ff5858;
}

.light-theme {
    --text-main: #334155;
    --text-subtle: #64748b;
    --text-heading: #0f172a;
    --bg-color: #f0f8ff;
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(200, 200, 200, 0.7);
    --primary: #3b82f6;
    --primary-hover: #60a5fa;
    --secondary-bg: #e2e8f0;
    --secondary-hover: #cbd5e1;
    --select-bg: #ffffff;
    --aurora1: #a7c7ff;
    --aurora2: #fbcfe8;
    --aurora3: #a7f3d0;
    --success-color: #10b981;
    --error-color: #ef4444;
}

/* --- BASE & LAYOUT --- */
* {
    box-sizing: border-box;
    scrollbar-color: var(--secondary-bg) rgba(0, 0, 0, 0);
    scrollbar-width: thin;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    margin: 0;
    background-color: var(--bg-color);
    color: var(--text-main);
    transition: background-color var(--transition-speed), color var(--transition-speed);
    padding: 1rem;
    /* padding-bottom: 120px; */
}

#app-container {
    max-width: 800px;
    margin: 0 auto;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding: 0.5rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-heading);
}

h1 {
    font-size: 1.5rem;
    margin: 0;
}

h2 {
    font-size: 1.75rem;
    color: var(--text-heading);
    margin: 0 0 0.5rem 0;
}

h3 {
    font-size: 1.25rem;
    color: var(--text-heading);
    margin: 0.5rem 0;
}

p {
    margin: 0 0 1.5rem 0;
    color: var(--text-subtle);
    line-height: 1.6;
    max-width: 60ch;
}

hr.divider {
    border: none;
    height: 1px;
    background: var(--glass-border);
    margin: 1.5rem 0;
}

.hidden {
    display: none !important;
}

/* --- STEP-BY-STEP PIPELINE --- */
.pipeline-step {
    display: none;
}

.step-1 #step-1-category-selection,
.step-2 #step-2-configuration,
.step-3 #step-3-editing,
.step-4 #step-4-mastering {
    display: block;
    animation: fadeIn 0.5s ease-out;
}

section#step-1-category-selection {
    padding-bottom: 2rem;
}

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

.step-header p {
    margin-left: auto;
    margin-right: auto;
}

.script-stats {
    font-style: italic;
    font-size: 0.9rem;
    margin-top: -0.25rem;
    margin-bottom: 1rem;
}


.step-indicator {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--primary);
    color: white;
    border-radius: 99px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- CATEGORY SELECTION --- */
.category-selection-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    max-width: 700px;
    margin: 3rem auto 0;
}

.category-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    text-align: left;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-main);
    display: flex;
    flex-direction: column;
}

.category-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 10px 25px -5px color-mix(in srgb, var(--primary) 20%, transparent);
}

.category-card .icon-lg {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.category-card h3 {
    margin-top: 0;
}

.category-card p {
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 0;
}

/* --- GLASSMORPHISM CARD --- */
.glass-card {
    background: var(--glass-bg);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 1.5rem;
    max-width: 700px;
    margin: auto;
}

.container-card {
    max-width: 700px;
    margin: auto;
    padding-bottom: 120px;
}

/* --- ANIMATED AURORA BACKGROUND --- */
.aurora-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.aurora-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.3;
    transition: background-color 0.5s;
}

.shape1 {
    width: 400px;
    height: 400px;
    background: var(--aurora1);
    top: -100px;
    left: -100px;
    animation: move1 20s infinite alternate;
}

.shape2 {
    width: 500px;
    height: 500px;
    background: var(--aurora2);
    bottom: -150px;
    right: -150px;
    animation: move2 25s infinite alternate;
}

@keyframes move1 {
    from {
        transform: translate(0, 0) rotate(0deg);
    }

    to {
        transform: translate(200px, 100px) rotate(45deg);
    }
}

@keyframes move2 {
    from {
        transform: translate(0, 0) rotate(0deg);
    }

    to {
        transform: translate(-200px, -100px) rotate(-60deg);
    }
}

/* --- FORMS & CONTROLS --- */
label {
    font-weight: 500;
    color: var(--text-subtle);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    display: block;
}

.control-group {
    margin-bottom: 1.5rem;
}

textarea,
input[type="number"],
input[type="text"],
input[type="password"],
input[type="email"],
select {
    width: 100%;
    padding: 0.8rem 1rem;
    background: var(--secondary-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    color: var(--text-main);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-speed);
}

select {
    background-color: var(--select-bg);
}

textarea:focus,
input:focus,
select:focus {
    outline: none;
    border-color: var(--music-track-color, var(--primary));
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--music-track-color, var(--primary)) 30%, transparent);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

.control-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* --- NEW: Sound Design Checkbox Options --- */
.sound-design-options {
    margin-top: 1.5rem;
}

.sound-design-options .control-group {
    display: flex;
    grid-template-columns: 1fr 1fr;
    flex-direction: row;
    gap: 1rem;
}

.sound-design-options .control-group .checkbox-group {
    display: flex;
    width: 100%;
}

.checkbox-group input[type="checkbox"] {
    display: none;
}

.checkbox-group .checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    width: 100%;
    background: var(--secondary-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-speed);
    color: var(--text-subtle);
    font-weight: 500;
}

.checkbox-group .checkbox-label:hover {
    background: var(--secondary-hover);
}

.checkbox-group .checkbox-label::before {
    content: '\e836'; /* 'check_box_outline_blank' */
    font-family: 'Material Symbols Outlined';
    font-size: 24px;
    transition: all var(--transition-speed);
    color: var(--text-subtle);
}

.checkbox-group input[type="checkbox"]:checked + .checkbox-label {
    border-color: var(--primary);
    background: color-mix(in srgb, var(--primary) 15%, transparent);
    color: var(--text-heading);
}

.checkbox-group input[type="checkbox"]:checked + .checkbox-label .material-symbols-outlined {
    color: var(--primary);
}

.checkbox-group input[type="checkbox"]:checked + .checkbox-label::before {
    content: '\e837'; /* 'check_box' */
    color: var(--primary);
}

/* --- Radio Button Groups for Sub-options --- */
.option-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.option-group .radio-label {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    background: var(--secondary-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-speed);
}

.option-group .radio-label:hover {
    background: var(--secondary-hover);
}

.option-group input[type="radio"] {
    display: none;
}

.option-group input[type="radio"]:checked + .radio-label {
    border-color: var(--primary);
    background: color-mix(in srgb, var(--primary) 15%, transparent);
    color: var(--text-heading);
}

.option-group .radio-label .material-symbols-outlined {
    margin-right: 0.75rem;
    color: var(--text-subtle);
    transition: color var(--transition-speed);
}

.option-group input[type="radio"]:checked + .radio-label .material-symbols-outlined {
    color: var(--primary);
}


.action-btn {
    padding: 0.8rem 1rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.action-btn:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.action-btn:disabled {
    background: var(--secondary-bg);
    color: var(--text-subtle);
    cursor: not-allowed;
}

.action-btn.small {
    font-size: 0.9rem;
    padding: 0.6rem 1rem;
    border-radius: 10px;
}

.secondary-btn {
    background: var(--secondary-bg);
    color: var(--text-main);
}

.secondary-btn:hover {
    background: var(--secondary-hover);
}

.action-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    margin-top: 1.5rem;
    gap: 1rem;
}

#step-3-editing .action-bar {
    margin-top: -0.5rem;
    margin-bottom: 1rem;
}

.download-group {
    display: flex;
    gap: 0.75rem;
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-subtle);
    cursor: pointer;
    padding: 0.5rem;
    display: grid;
    place-items: center;
    transition: all 0.2s ease;
    border-radius: 50%;
}

.icon-btn:hover:not(:disabled) {
    background: var(--secondary-hover);
    color: var(--text-main);
}

.icon-btn:disabled {
    color: var(--text-subtle);
    opacity: 0.5;
    cursor: not-allowed;
}

.source-chooser {
    display: flex;
    background: var(--secondary-bg);
    border-radius: var(--border-radius-md);
    padding: 0.25rem;
}

.source-btn {
    width: 50%;
    padding: 0.5rem;
    border: none;
    background: transparent;
    color: var(--text-subtle);
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    border-radius: 10px;
    font-weight: 500;
}

.source-btn.active {
    background: var(--glass-bg);
    color: var(--text-heading);
    font-weight: 600;
}

.file-upload-label {
    border: 2px dashed var(--glass-border);
    padding: 2rem;
    border-radius: var(--border-radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--text-subtle);
    cursor: pointer;
    transition: all 0.3s;
}

.file-upload-label:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* REFINED: File display container styles */
#file-display-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
    font-style: italic;
    color: var(--text-subtle);
}

#file-name-display {
    text-align: center;
}


#file-input-container,
#instruction-prompt-label {
    margin-top: 0.5em;
}

/* --- SCRIPT EDITOR (REVISED) --- */
#script-container {
    max-height: calc(100vh - 348px);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 0.6rem 0 1rem;
}

.script-line {
    display: flex;
    background: var(--secondary-bg);
    padding: 1rem;
    border: 1px solid transparent;
    transition: all var(--transition-speed);
    align-items: flex-start;
    position: relative;
    border-radius: var(--border-radius-md);
}

.script-line:hover .delete-line-btn {
    opacity: 1;
    transform: scale(1);
}

.script-line.is-playing {
    border-color: var(--primary);
    box-shadow: 0 0 15px color-mix(in srgb, var(--primary) 20%, transparent);
}

.dialogue .script-line-content {
    word-break: break-word;
    max-width: 100%;
}

.script-line-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-left: 0;
}

.script-line-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    padding-left: 2rem;
}

.script-character,
.pause-duration,
.music-fade-duration {
    font-weight: 600;
    color: var(--text-heading);
    padding: 0.25rem 0.5rem;
    border-radius: 8px;
    transition: background-color var(--transition-speed);
}
.script-character:focus,
.pause-duration:focus,
.music-fade-duration:focus {
    background: var(--select-bg);
    outline: none;
}
.script-line-header select {
    font-size: 0.9rem;
    padding: 0.25rem 0.5rem;
    max-width: 150px;
}

.voice-control-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.script-dialogue,
.script-tone {
    padding: 0.5rem;
    border-radius: 8px;
    transition: background-color var(--transition-speed);
    line-height: 1.5;
}

.script-dialogue:focus,
.script-tone:focus {
    background: rgba(0, 0, 0, 0.2);
    outline: none;
}

.script-tone {
    font-style: italic;
    color: var(--text-subtle);
}

.script-line-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border-top: 1px solid var(--glass-border);
    padding-top: 0.75rem;
    margin-top: 0.5rem;
    width: 100%;
}

.script-line.pause {
    padding: 0.5rem 1rem; 
    align-items: center;
}

.script-line.pause .script-line-content {
    font-style: italic;
    color: var(--text-subtle);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-direction: row;
    padding-left: 2rem;
}

/* --- SFX LINE STYLES (REFINED) --- */
.script-line.sfx {
    padding: 0.75rem 1rem;
    align-items: center;
    gap: 1rem;
    /* border-left: 4px solid var(--sfx-track-color); */
    border-left: 4px solid color-mix(in srgb, var(--sfx-track-color) 50%, transparent);
    /* box-shadow: inset 0 0 26px -16px var(--sfx-track-color); */
    box-shadow: none !important;
    background: color-mix(in srgb, var(--sfx-track-color) 6%, transparent);
}
.script-line.sfx .script-line-content {
    /* flex-direction: row; */
    /* align-items: center; */
    justify-content: space-between;
    gap: 1rem;
    padding-left: 0;
}
.sfx-icon-container {
    width: 2.5rem;
    height: 2.5rem;
    flex-shrink: 0;
    display: grid;
    place-items: center;
    margin-bottom: -3.5rem;
}
.sfx-icon {
    color: var(--sfx-track-color);
}
.sfx-details {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    min-width: 0; /* Prevents overflow */
    margin-left: 3.5rem;
    word-break: break-word;
}
.sfx-description {
    font-weight: 500;
    color: var(--text-main);
    padding: 0.25rem;
    border-radius: 6px;
    transition: background-color var(--transition-speed);
}

.sfx-description:focus {
    background: var(--select-bg);
    outline: none;
}
.sfx-track-info {
    font-size: 0.85rem;
    color: var(--text-subtle);
}
.sfx-line-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
    padding: 0;
    margin: 0;
    border-top: 1px solid var(--glass-border);
    padding-top: 0.75rem;
    margin-top: 0.5rem;
}


/* --- MUSIC LINE STYLES (REFINED) --- */
.script-line.music {
    background: color-mix(in srgb, var(--music-track-color) 8%, transparent);
    align-items: center;
    padding: 1rem;
    gap: 1rem;
}

.script-line.music-border-top {
    /* border-top-color: var(--music-track-color); */
    border-top-color: color-mix(in srgb, var(--music-track-color) 50%, transparent);
    border-top-width: 4px;
    border-top-style: solid;
    margin-top: 4px;
    border-radius: var(--border-radius-md) var(--border-radius-md) 0 0;
    border-bottom: none;
    background: linear-gradient(to bottom, color-mix(in srgb, var(--music-track-color) 8%, transparent) 0%, transparent 100% );
}
.script-line.music-border-bottom {
    /* border-bottom-color: var(--music-track-color); */
    border-bottom-color: color-mix(in srgb, var(--music-track-color) 50%, transparent);
    border-bottom-width: 4px;
    border-bottom-style: solid;
    margin-bottom: 4px;
    border-radius: 0 0 var(--border-radius-md) var(--border-radius-md);
    border-top: none;
    background: linear-gradient(to top, color-mix(in srgb, var(--music-track-color) 8%, transparent) 0%, transparent 100% );
}

.script-line.music-aura {
    box-shadow: inset 0 0 26px -16px var(--music-track-color);
}

.script-line.music .script-line-content {
    flex-direction: column;
    flex-wrap: nowrap;
    justify-content: space-between;
    gap: 1rem;
    width: 100%;
    padding-left: 0;
}   

.music-icon-container {
    width: 2.5rem;
    height: 2.5rem;
    flex-shrink: 0;
    display: grid;
    place-items: center;
}

.music-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
    color: var(--music-track-color, var(--primary))!important;
}

.music-icon.error, .sfx-icon.error {
    color: var(--error-color) !important;
}

.music-details {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.music-action-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    max-width: 300px;
}

.music-action-select {
    font-weight: 700;
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--music-track-color, var(--primary));
    letter-spacing: 0.5px;
    background: color-mix(in srgb, var(--music-track-color, var(--primary)) 15%, transparent);
    border: 1px solid var(--music-track-color, var(--primary));
    border-radius: var(--border-radius-md);
    padding: 0.3rem 0.5rem;
    background-color: var(--select-bg);
}

.music-genre {
    color: var(--text-heading);
    font-weight: 500;
    padding: 0.25rem;
    border-radius: 6px;
    transition: background-color var(--transition-speed);
}

.music-genre:focus {
    background: var(--secondary-bg);
    outline: none;
}

.music-track-info {
    font-size: 0.85rem;
    color: var(--text-subtle);
    white-space: normal;
    overflow-wrap: break-word;
    word-break: break-word;
}

.music-track-info em {
    font-style: normal;
    font-weight: 500;
    color: var(--text-main);
}

.music-track-info .track-artist {
    margin-left: 0.5rem;
}

.music-line-actions {
    display: flex;
    gap: 0.75rem;
    flex-shrink: 0;
    border: none;
    padding: 0;
    margin: 0;
}

.music-details .script-line-actions {
    border-top: 1px solid var(--glass-border);
    padding-top: 0.75rem;
    margin-top: 0.5rem;
}

.music-info-row {
    flex-direction: row;
    display: flex;
    gap: 0.5rem;
}

.line-status-indicator {
    position: absolute;
    left: 1rem;
    width: 24px;
    height: 24px;
    display: grid;
    place-items: center;
}

.line-status-indicator .spinner {
    width: 1em;
    height: 1em;
}

.line-status-indicator .material-symbols-outlined {
    font-size: 1.25rem;
    transition: color 0.3s;
}

.line-status-indicator.status-success {
    color: var(--success-color);
}

.line-status-indicator.status-error {
    color: var(--error-color);
}

/* --- Script Line Inserter Bar --- */
.line-inserter-bar {
    height: 24px;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}
.line-inserter-bar::before {
    content: '';
    position: absolute;
    height: 1px;
    width: 100%;
    background: var(--glass-border);
    top: 50%;
    z-index: 0;
    opacity: 0;
    transition: opacity var(--transition-speed);
}
.line-inserter-bar:hover::before {
    opacity: 1;
}
.inserter-trigger {
    border: 1px solid var(--glass-border);
    z-index: 1;
    opacity: 0;
    transform: scale(0.8);
    transition: all var(--transition-speed) ease;
}
.line-inserter-bar:hover .inserter-trigger {
    opacity: 1;
    transform: scale(1);
}
.inserter-trigger:hover {
    border-color: var(--primary);
    color: var(--primary);
}
.inserter-options {
    display: flex;
    gap: 0.75rem;
    position: absolute;
    z-index: 2;
    padding: 0 0.5rem;
    transform: scale(0.8);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-speed) ease;
}
.line-inserter-bar.active .inserter-options {
    transform: scale(1);
    opacity: 1;
    pointer-events: all;
}
.line-inserter-bar.active .inserter-trigger {
    transform: scale(0);
    opacity: 0;
}
.add-line-btn {
    background: var(--secondary-bg);
    border: 1px solid var(--glass-border);
}
.add-line-btn:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: var(--secondary-hover);
}


/* --- Line Delete Button --- */
.delete-line-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    opacity: 0;
    transform: scale(0.8);
    transition: all var(--transition-speed) ease;
    z-index: 10;
}

.script-line.pause .delete-line-btn {
    top: 50%;
    transform: translateY(-50%) scale(0.8);
}


/* GLOBAL STATUS */
#global-player {
    position: fixed;
    bottom: 20px;
    left: 1rem;
    right: 1rem;
    z-index: 4000;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    transform: translateY(200%);
    transition: transform 0.5s ease-in-out;
    padding: 1rem;
}

#global-player:not(.hidden) {
    transform: translateY(0);
}

#player-status-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    color: var(--text-subtle);
    font-weight: 500;
}

.spinner {
    width: 1.2em;
    height: 1.2em;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* --- FIXED FOOTER & LOADING OVERLAY --- */
.step-action-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem 2rem;
    background: var(--glass-bg);
    border-top: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 500;
}

.step-action-footer .action-btn.icon-only {
    padding: 0.8rem;
    width: 50px;
    height: 50px;
    min-width: initial;
}


#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    background: rgba(11, 17, 32, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

#loading-overlay:not(.hidden) {
    opacity: 1;
    pointer-events: all;
}

.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    color: var(--text-heading);
}

#loading-status-text {
    margin: 0 50px;
    text-align: center;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--glass-border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

#loading-progress-container {
    width: 250px;
    height: 8px;
    background: var(--secondary-bg);
    border-radius: 4px;
    overflow: hidden;
}

#loading-progress-bar {
    width: 0%;
    height: 100%;
    background: var(--primary);
    transition: width 0.3s ease;
}

.progress-stats {
    font-size: 0.8rem;
    color: var(--text-subtle);
    margin-top: 0.5rem;
    min-height: 1.2em; 
}

.long-wait-message {
    font-size: 0.9rem;
    color: var(--text-main);
    background: var(--secondary-bg);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-md);
    margin: 0.5rem 0 0 0;
    max-width: 280px;
    text-align: center;
}


#cancel-generation-btn {
    margin-top: 1rem;
}


/* --- SETTINGS, AUTH, & UPGRADE MODALS (CONSOLIDATED) --- */
#settings-modal-overlay, #auth-modal-overlay, #upgrade-modal-overlay, #music-library-overlay, #sfx-library-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    z-index: 3999;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 5vh;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    overflow-y: auto;
}

#settings-modal-overlay:not(.hidden), #auth-modal-overlay:not(.hidden), #upgrade-modal-overlay:not(.hidden), #music-library-overlay:not(.hidden), #sfx-library-overlay:not(.hidden) {
    opacity: 1;
    pointer-events: all;
}

#settings-modal, #auth-modal, #upgrade-modal, #music-library-modal, #sfx-library-modal {
    width: 90%;
    max-width: 500px; 
    transform: scale(0.95);
    transition: transform 0.3s ease;
    padding: 0;
    overflow: hidden;
    margin: 1rem;
}

#settings-modal-overlay:not(.hidden) #settings-modal, 
#auth-modal-overlay:not(.hidden) #auth-modal, 
#upgrade-modal-overlay:not(.hidden) #upgrade-modal,
#music-library-overlay:not(.hidden) #music-library-modal,
#sfx-library-overlay:not(.hidden) #sfx-library-modal {
    transform: scale(1);
}

#settings-modal .panel-header, #auth-modal .panel-header, #upgrade-modal .panel-header, #music-library-modal .panel-header, #sfx-library-modal .panel-header {
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#settings-modal .panel-header h2, #auth-modal .panel-header h2, #upgrade-modal .panel-header h2, #music-library-modal .panel-header h2, #sfx-library-modal .panel-header h2 {
    font-size: 1.25rem;
    margin: 0;
}

#settings-modal .settings-content, #auth-modal-content, #upgrade-modal-content, .music-library-content, .sfx-library-content {
    padding: 1.5rem;
}


.theme-switcher {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.theme-btn-group {
    display: flex;
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    overflow: hidden;
}

.theme-btn {
    border: none;
    background: none;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    cursor: pointer;
}

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

.api-key-form {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

#api-key-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
    overflow-y: auto;
    max-height: 8rem;
}

.api-key-item {
    display: grid;
    grid-template-columns: 1fr auto auto;
    align-items: center;
    gap: 1rem;
    background: var(--secondary-bg);
    padding: 0 1rem;
    border-radius: var(--border-radius-md);
}

.api-key-item .key-name {
    font-weight: 500;
    text-overflow: ellipsis;
    overflow: hidden;
}

.key-value-display {
    color: var(--text-subtle);
    cursor: pointer;
    transition: color 0.2s ease;
}

.key-value-display:hover {
    color: var(--text-main);
}

button.icon-btn.apply-voice-to-all-btn {
    padding: 0;
}

/* --- HEADER & USER MENU (REFINED) --- */
.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.user-menu-trigger {
    background-color: var(--primary);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    display: grid;
    place-items: center;
}
#user-menu {
    position: relative;
}
.user-menu-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 250px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    padding: 0.5rem;
    z-index: 1000;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}
.user-menu-dropdown .user-info {
    padding: 0.75rem 1rem;
    line-height: 1.4;
}
.user-info-header { /* NEW */
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}
.user-menu-dropdown .user-info strong {
    display: block;
    color: var(--text-heading);
}
.user-menu-dropdown .user-info span {
    font-size: 0.85rem;
    color: var(--text-subtle);
}
.user-menu-dropdown .divider {
    margin: 0.5rem 0;
}
.user-menu-dropdown a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-main);
    text-decoration: none;
    border-radius: 10px;
    transition: background-color 0.2s ease;
}
.user-menu-dropdown a:hover {
    background-color: var(--secondary-hover);
    color: var(--text-heading);
}

/* --- USER MENU PLAN BADGE (NEW) --- */
#user-plan-badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 99px;
    text-transform: uppercase;
    line-height: 1;
}
.pro-badge {
    background-color: var(--primary);
    color: gold !important;
}
.free-badge {
    background-color: var(--secondary-hover);
    color: var(--text-subtle);
}

/* --- AUTH MODAL SPECIFICS --- */
.auth-subtext {
    text-align: center;
    color: var(--text-subtle);
    margin: 0 0 1.5rem 0;
}
.social-login-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.social-btn {
    padding: 0.75rem;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--glass-border);
    background: var(--secondary-bg);
    color: var(--text-main);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    text-decoration: none;
}
.social-btn:hover:not(.disabled) {
    border-color: var(--primary);
    background: var(--secondary-hover);
}
.social-btn.disabled {
    cursor: not-allowed;
    opacity: 0.6;
}
.social-btn img {
    width: 20px;
    height: 20px;
}
.auth-divider {
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--text-subtle);
    font-size: 0.8rem;
    margin: 1.5rem 0;
}
.auth-divider::before, .auth-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--glass-border);
}
.auth-divider:not(:empty)::before {
    margin-right: .5em;
}
.auth-divider:not(:empty)::after {
    margin-left: .5em;
}
#auth-form {
    display: flex;
    flex-direction: column;
    gap: 0;
}
#auth-form .control-group {
    margin-bottom: 1rem;
}
#auth-form .action-btn {
    width: 100%;
    margin-top: 0.5rem;
}
.auth-toggle {
    text-align: center;
    font-size: 0.9rem;
    margin-top: 1.5rem;
    margin-bottom: 0;
    color: var(--text-subtle);
}
.auth-toggle a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
}
.auth-message {
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-md);
    font-size: 0.9rem;
    border: 1px solid transparent;
    margin-bottom: 1rem;
    line-height: 1.4;
}
.auth-message.success {
    background-color: color-mix(in srgb, var(--success-color) 15%, transparent);
    border-color: var(--success-color);
    color: var(--text-heading);
}
.auth-message.error {
    background-color: color-mix(in srgb, var(--error-color) 15%, transparent);
    border-color: var(--error-color);
    color: var(--text-heading);
}
#register-fields.hidden {
    display: none;
}

/* --- UPGRADE MODAL SPECIFICS --- */
.feature-list {
    list-style: none;
    padding: 0;
    margin: 2rem 0;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}
.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.feature-item .material-symbols-outlined {
    color: var(--primary);
    font-size: 1.75rem;
}
.feature-item span {
    color: var(--text-main);
    line-height: 1.5;
}
#upgrade-modal-content p {
    text-align: center;
    font-size: 0.9rem;
}
#upgrade-now-btn {
    width: 100%;
    margin-top: 1rem;
}

/* --- MUSIC LINE UI FEEDBACK --- */
.music-error-text {
    color: var(--error-color);
    font-weight: 500;
}

/* --- MUSIC LINE CONTROLS --- */
.music-fade-duration {
    font-weight: 600;
    color: var(--text-heading);
    padding: 0.3rem 0.5rem;
    border-radius: 8px;
    transition: background-color var(--transition-speed);
}
.music-fade-duration:focus {
    background: var(--secondary-bg);
    outline: none;
    box-shadow: 0 0 0 2px var(--primary);
}


/* --- MUSIC & SFX LIBRARY MODAL STYLES --- */
#music-library-modal, #sfx-library-modal {
    max-width: 600px;
}
.music-search-bar, .sfx-search-bar {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}
#music-results-container, #sfx-results-container {
    max-height: 50vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.music-results-placeholder, .music-results-error,
.sfx-results-placeholder, .sfx-results-error {
    text-align: center;
    color: var(--text-subtle);
    padding: 2rem;
}
.music-results-error, .sfx-results-error {
    color: var(--error-color);
    font-weight: 500;
}
.music-result-item, .sfx-result-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem;
    background: var(--secondary-bg);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--glass-border);
    transition: all 0.2s ease;
    word-break: break-word;
}
.music-result-item:hover, .sfx-result-item:hover {
    border-color: var(--primary);
    background: var(--secondary-hover);
}
.music-result-title, .sfx-result-title {
    font-weight: 600;
    color: var(--text-heading);
}
.music-result-artist, .sfx-result-duration {
    font-size: 0.9rem;
    color: var(--text-subtle);
}
.music-result-actions, .sfx-result-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}


/* THE FIX: Styles for the in-line "Now Playing" indicator */
.now-playing-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.75rem 0.25rem 0.15rem;
    border-radius: 99px;
    flex-shrink: 0;
    margin-left: auto;
    max-width: 250px;
    flex-grow: 1;
}
.now-playing-indicator .material-symbols-outlined {
    font-size: 24px;
    color: var(--music-track-color);
}
.now-playing-text-container {
    flex-grow: 1;
    overflow: hidden;
    white-space: nowrap;
}
.now-playing-text {
    display: inline-block;
    color: var(--text-subtle);
    font-size: 0.8rem;
    animation: scroll-text 10s linear infinite;
}
@keyframes scroll-text {
    0%   { transform: translateX(120%); }
    100% { transform: translateX(-100%); }
}


/* --- NEW: Settings Modal Tabs --- */
.settings-tabs {
    display: flex;
    border-bottom: 1px solid var(--glass-border);
    padding: 0 1.5rem;
}
.settings-tab-btn {
    border: none;
    background: none;
    color: var(--text-subtle);
    padding: 1rem 0.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    position: relative;
    margin: 0 1rem;
    transition: color 0.2s ease;
}
.settings-tab-btn:first-child { margin-left: 0; }
.settings-tab-btn:hover {
    color: var(--text-main);
}
.settings-tab-btn.active {
    color: var(--primary);
}
.settings-tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary);
}

.settings-tab-content {
    display: none;
}
.settings-tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

.settings-form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.slider-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.slider-group .slider-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
    font-size: 0.9rem;
}
.slider-group .slider-label .slider-value {
    color: var(--text-main);
    font-weight: 600;
    background: var(--secondary-bg);
    padding: 0.1rem 0.5rem;
    border-radius: 8px;
    min-width: 40px;
    text-align: center;
}
.slider-group input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    background: var(--secondary-bg);
    outline: none;
    border-radius: 4px;
}
.slider-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary);
    cursor: pointer;
    border-radius: 50%;
}
.slider-group input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--primary);
    cursor: pointer;
    border-radius: 50%;
    border: none;
}
#save-settings-btn {
    margin-top: 1rem;
}

/* --- NEW: Project History List --- */
#project-history-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-height: 40vh;
    overflow-y: auto;
}
.history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem;
    background: var(--secondary-bg);
    border-radius: var(--border-radius-md);
}
.history-item-info {
    flex-grow: 1;
    overflow: hidden;
}
.history-item-name {
    font-weight: 600;
    color: var(--text-heading);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.history-item-date {
    font-size: 0.8rem;
    color: var(--text-subtle);
}
.history-item-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}
.history-item-actions .icon-btn.delete {
    color: var(--error-color);
}
.history-item-actions .icon-btn.delete:hover {
    background: color-mix(in srgb, var(--error-color) 15%, transparent);
}
.footer-action-group {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* --- RESPONSIVE MEDIA QUERIES --- */
@media (min-width: 640px) {
    .control-grid {
        grid-template-columns: 1fr 1fr;
    }

    .api-key-form {
        grid-template-columns: 1fr 1fr auto;
    }
}

@media (max-width: 640px) {
    .glass-card {
        max-width: initial;
        margin: initial;
    }

    .script-line-header {
        padding-left: initial;
    }

    .script-line-header select {
        max-width: initial;
    }

    span.script-character {
        margin-left: 2rem;
    }

    .category-selection-grid {
        gap: 1rem;
    }

    .voice-control-container {
        width: 100%;
    }
    
    .script-line.music .script-line-content {
        flex-direction: row;
        flex-wrap: wrap;
        align-items: flex-start;
    }

    .music-line-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .music-line-actions .action-btn {
        flex-grow: 1;
    }

    .music-details .script-line-actions {
       width: 100%;
    }

    .music-action-controls {
        max-width: calc(100% - 2.5rem);
    }

    .script-line.sfx .script-line-content {
        flex-wrap: wrap;
    }
    .sfx-line-actions {
        width: 100%;
    }
    .sfx-details, .music-details {
        max-width: calc(100% - 3.5rem);
    }
    .now-playing-indicator {
        margin-left: unset;
    }
    .sound-design-options .control-group {
        display: unset;
    }
}