/* ==========================================================================
   SPEECHSPARK DESIGN SYSTEM & STYLES
   ========================================================================== */

/* Color & Typography System Variables */
:root {
    --bg-base: hsl(224, 25%, 7%);
    --panel-bg: hsla(224, 25%, 11%, 0.65);
    --panel-border: hsla(224, 15%, 22%, 0.65);
    --panel-border-focus: hsla(263, 90%, 65%, 0.5);
    
    --text-primary: hsl(210, 40%, 98%);
    --text-secondary: hsl(215, 20%, 75%);
    --text-muted: hsl(215, 12%, 50%);
    
    --primary: hsl(263, 90%, 64%);
    --primary-glow: hsla(263, 90%, 64%, 0.3);
    --primary-hover: hsl(263, 95%, 70%);
    
    --accent: hsl(180, 100%, 42%);
    --accent-glow: hsla(180, 100%, 42%, 0.25);
    --accent-hover: hsl(180, 100%, 50%);
    
    --danger: hsl(0, 85%, 62%);
    --danger-glow: hsla(0, 85%, 62%, 0.2);
    --danger-hover: hsl(0, 95%, 68%);
    
    --success: hsl(142, 70%, 45%);
    
    --card-bg: hsla(224, 25%, 15%, 0.4);
    --input-bg: hsla(224, 25%, 14%, 0.8);
    --input-border: hsla(224, 15%, 26%, 0.7);
    --input-border-focus: hsl(263, 90%, 65%);
    
    --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    
    --shadow-sm: 0 2px 8px -2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 12px 28px -8px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 20px 48px -12px rgba(0, 0, 0, 0.8);
}

/* Base Reset & Configuration */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: hsla(224, 15%, 26%, 0.8);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: hsla(263, 90%, 64%, 0.5);
}

/* Typography elements */
h1, h2, h3, h4 {
    font-family: 'Outfit', system-ui, -apple-system, sans-serif;
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* Background Aesthetics (Glow Orbs) */
.app-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.glow-orb {
    position: absolute;
    border-radius: var(--radius-full);
    filter: blur(130px);
    opacity: 0.45;
}

.glow-orb-1 {
    top: -10%;
    left: 15%;
    width: 45vw;
    height: 45vw;
    background: radial-gradient(circle, var(--primary) 0%, rgba(0,0,0,0) 70%);
    animation: floating-orb-1 22s infinite alternate ease-in-out;
}

.glow-orb-2 {
    bottom: -10%;
    right: 15%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, var(--accent) 0%, rgba(0,0,0,0) 70%);
    animation: floating-orb-2 28s infinite alternate ease-in-out;
}

@keyframes floating-orb-1 {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(6%, 10%) scale(1.1); }
}

@keyframes floating-orb-2 {
    0% { transform: translate(0, 0) scale(1.1); }
    100% { transform: translate(-8%, -12%) scale(0.9); }
}

/* Main Container Layout */
.app-container {
    width: 100%;
    max-width: 1300px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    min-height: 100vh;
}

/* HEADER STYLE */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    border-bottom: 1px solid var(--panel-border);
    padding-bottom: 1.5rem;
}

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

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary) 0%, hsl(280, 85%, 55%) 100%);
    box-shadow: 0 0 20px var(--primary-glow);
    color: #fff;
}

.logo-text {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--text-primary);
    background: linear-gradient(to right, #ffffff, #dedede);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-text span {
    background: linear-gradient(135deg, var(--accent) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tagline {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-right: auto;
    padding-left: 1.5rem;
    border-left: 1px solid var(--panel-border);
}

/* Badges */
.badge {
    background: var(--primary);
    color: #fff;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    margin-left: 0.35rem;
}

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
    user-select: none;
    text-decoration: none;
}

.btn-icon-text {
    padding: 0.6rem 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, hsl(270, 85%, 55%) 100%);
    color: #ffffff;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px hsla(263, 90%, 64%, 0.45);
    background: linear-gradient(135deg, var(--primary-hover) 0%, hsl(270, 95%, 60%) 100%);
}

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

.btn-secondary {
    background: var(--card-bg);
    border-color: var(--panel-border);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: hsla(224, 25%, 18%, 0.7);
    border-color: hsla(224, 20%, 35%, 0.8);
    color: #fff;
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent) 0%, hsl(190, 100%, 40%) 100%);
    color: #06181e;
    box-shadow: 0 4px 15px var(--accent-glow);
    font-weight: 700;
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px hsla(180, 100%, 42%, 0.45);
    background: linear-gradient(135deg, var(--accent-hover) 0%, hsl(190, 100%, 45%) 100%);
}

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

.btn-text-danger {
    background: transparent;
    color: var(--text-muted);
    font-size: 0.8rem;
    padding: 0.25rem 0.5rem;
}

.btn-text-danger:hover {
    color: var(--danger);
    background: var(--danger-glow);
}

.btn-sm {
    padding: 0.5rem 0.85rem;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

.btn-full {
    width: 100%;
}

.btn-round {
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: var(--radius-full);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* PANELS Layout */
.main-content {
    display: grid;
    grid-template-columns: 1fr 1.35fr;
    gap: 1.75rem;
    align-items: start;
    flex-grow: 1;
}

.panel {
    background-color: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-md);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.panel-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.65rem;
    border-bottom: 1px solid var(--panel-border);
    padding-bottom: 0.85rem;
}

.panel-title svg {
    color: var(--primary);
}

/* FORM ELEMENTS */
.config-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.form-row-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

input[type="text"],
select,
textarea {
    font-family: inherit;
    font-size: 0.92rem;
    color: var(--text-primary);
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    outline: none;
    transition: all var(--transition-fast);
    width: 100%;
}

input[type="text"]:focus,
select:focus,
textarea:focus {
    border-color: var(--input-border-focus);
    box-shadow: 0 0 0 3px var(--primary-glow);
    background-color: hsla(224, 25%, 17%, 0.95);
}

/* Select arrows */
select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%23a0aec0' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3E%3C/svg%3E");
    background-position: right 0.75rem center;
    background-repeat: no-repeat;
    background-size: 1.25rem;
    padding-right: 2.25rem;
}

textarea {
    resize: vertical;
    min-height: 80px;
}

.field-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* SVG animations */
.icon-sparkles {
    animation: sparkle-pulse 2.5s infinite;
}

@keyframes sparkle-pulse {
    0%, 100% { transform: scale(1); filter: drop-shadow(0 0 0px var(--primary-glow)); }
    50% { transform: scale(1.12); filter: drop-shadow(0 0 8px var(--primary-glow)); }
}

/* WORKBENCH STATE STYLING */
.workbench-panel {
    min-height: 520px;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.workbench-state {
    display: none;
    flex-direction: column;
    height: 100%;
    gap: 1.5rem;
    flex-grow: 1;
}

.workbench-state.active {
    display: flex;
}

/* Empty state styling */
#workbench-empty {
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 3rem 1.5rem;
}

.empty-state-content {
    max-width: 380px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
}

.mic-illustration {
    width: 84px;
    height: 84px;
    border-radius: var(--radius-full);
    background: radial-gradient(circle, hsla(224, 25%, 22%, 0.7) 0%, hsla(224, 25%, 15%, 0.4) 100%);
    border: 1px solid var(--panel-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    box-shadow: var(--shadow-sm);
}

.mic-illustration svg {
    stroke-width: 1.5;
}

#workbench-empty h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
}

#workbench-empty p {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

/* Loading state styling */
#workbench-loading {
    justify-content: center;
    align-items: center;
    padding: 4rem 1.5rem;
}

.loading-state-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    text-align: center;
}

.spinner-container {
    position: relative;
    width: 64px;
    height: 64px;
}

.spinner {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-full);
    border: 3px solid transparent;
    border-top-color: var(--primary);
    border-bottom-color: var(--primary);
    animation: spin 1.2s linear infinite;
}

.spinner-inner {
    position: absolute;
    top: 6px;
    left: 6px;
    right: 6px;
    bottom: 6px;
    border-radius: var(--radius-full);
    border: 3px solid transparent;
    border-left-color: var(--accent);
    border-right-color: var(--accent);
    animation: spin-reverse 0.9s linear infinite;
}

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

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

.loading-pulse {
    animation: pulse-opacity 1.5s infinite alternate ease-in-out;
}

@keyframes pulse-opacity {
    0% { opacity: 0.6; }
    100% { opacity: 1; }
}

/* Result State Styling */
.result-header {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    border-bottom: 1px solid var(--panel-border);
    padding-bottom: 1rem;
}

.speech-meta-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.meta-tag {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    letter-spacing: 0.03em;
}

.tag-category {
    background-color: hsla(263, 90%, 65%, 0.15);
    border: 1px solid hsla(263, 90%, 65%, 0.35);
    color: hsl(263, 100%, 80%);
}

.tag-tone {
    background-color: hsla(180, 100%, 42%, 0.12);
    border: 1px solid hsla(180, 100%, 42%, 0.3);
    color: hsl(180, 100%, 80%);
}

.tag-length {
    background-color: hsla(215, 20%, 75%, 0.1);
    border: 1px solid hsla(215, 20%, 75%, 0.2);
    color: var(--text-secondary);
}

.result-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.speech-title-input {
    font-family: 'Outfit', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    background: transparent;
    border: 1px solid transparent;
    padding: 2px 6px;
    margin-left: -6px;
    border-radius: var(--radius-sm);
    color: #fff;
    cursor: pointer;
    flex-grow: 1;
}

.speech-title-input:hover {
    background: hsla(224, 25%, 18%, 0.7);
}

.speech-title-input:focus {
    background: var(--input-bg);
    border-color: var(--input-border-focus);
    cursor: text;
    outline: none;
}

.save-status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    background: hsla(224, 25%, 15%, 0.6);
    border: 1px solid var(--panel-border);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.save-status-indicator.saved {
    color: var(--success);
    border-color: hsla(142, 70%, 45%, 0.3);
    background: hsla(142, 70%, 45%, 0.08);
}

.save-status-indicator.saving {
    color: var(--primary);
    border-color: hsla(263, 90%, 65%, 0.3);
    background: hsla(263, 90%, 65%, 0.08);
}

/* Editor text container */
.speech-editor-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.speech-textarea {
    flex-grow: 1;
    min-height: 250px;
    border: 1px solid var(--panel-border);
    background-color: hsla(224, 25%, 8%, 0.4);
    font-family: 'Inter', sans-serif;
    font-size: 0.96rem;
    line-height: 1.7;
    padding: 1.25rem;
    resize: none;
    border-radius: var(--radius-md);
    color: var(--text-primary);
}

.speech-textarea:focus {
    background-color: hsla(224, 25%, 8%, 0.65);
    border-color: var(--panel-border-focus);
    box-shadow: 0 0 0 1px var(--primary-glow);
}

/* Actions panel */
.result-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--panel-border);
    padding-bottom: 1.25rem;
}

.action-buttons-group {
    display: flex;
    gap: 0.75rem;
    width: 100%;
}

.action-buttons-group .btn {
    flex: 1;
}

/* TTS Area styling */
.tts-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background: hsla(224, 25%, 15%, 0.35);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-md);
    padding: 1rem;
}

.tts-title {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.tts-title svg {
    color: var(--accent);
}

.tts-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 1rem;
}

.tts-voice-control select {
    padding: 0.4rem 2rem 0.4rem 0.75rem;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

.tts-speed-control {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* Slider Custom Styling */
input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    background: var(--input-border);
    border-radius: var(--radius-full);
    outline: none;
    margin: 8px 0;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: var(--radius-full);
    background: var(--accent);
    cursor: pointer;
    box-shadow: 0 0 10px var(--accent-glow);
    transition: all var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
    background: var(--accent-hover);
    transform: scale(1.15);
}

.tts-actions {
    display: flex;
    gap: 0.5rem;
}

.tts-actions .btn {
    flex-grow: 1;
}

/* DRAWER HISTORY STYLE */
.drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    visibility: hidden;
    transition: visibility var(--transition-normal);
}

.drawer.open {
    visibility: visible;
}

.drawer-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(6, 10, 20, 0.75);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.drawer.open .drawer-overlay {
    opacity: 1;
}

.drawer-content {
    position: absolute;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 420px;
    height: 100%;
    background-color: hsl(224, 25%, 9%);
    border-left: 1px solid var(--panel-border);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    transition: right var(--transition-normal);
}

.drawer.open .drawer-content {
    right: 0;
}

.drawer-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--panel-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.drawer-header h3 {
    font-size: 1.3rem;
}

.btn-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.btn-close:hover {
    color: #fff;
    background: hsla(224, 25%, 18%, 0.6);
}

.drawer-actions {
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid var(--panel-border);
}

.history-search-input {
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
}

.drawer-body {
    flex-grow: 1;
    overflow-y: auto;
    padding: 1.5rem;
}

.history-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--text-muted);
    gap: 0.75rem;
    padding: 4rem 1rem;
}

.history-empty p {
    font-size: 0.85rem;
}

.history-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.history-item {
    background-color: var(--card-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
}

.history-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background-color: transparent;
    transition: background-color var(--transition-fast);
}

.history-item:hover {
    background-color: hsla(224, 25%, 18%, 0.5);
    border-color: hsla(224, 20%, 30%, 0.8);
    transform: translateX(-2px);
}

.history-item:hover::before {
    background-color: var(--primary);
}

.history-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.history-item-title {
    font-size: 0.92rem;
    font-weight: 700;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex-grow: 1;
}

.btn-item-delete {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    padding: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-item-delete:hover {
    color: var(--danger);
    background-color: var(--danger-glow);
}

.history-item-snippet {
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.history-item-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.history-item-tag {
    background-color: hsla(224, 15%, 26%, 0.4);
    border: 1px solid hsla(224, 15%, 26%, 0.8);
    padding: 1px 6px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

/* TELEPROMPTER OVERLAY SYSTEM */
.teleprompter-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: hsl(224, 30%, 3%);
    z-index: 2000;
    display: none;
    flex-direction: column;
}

.teleprompter-overlay.active {
    display: flex;
}

.teleprompter-header {
    background-color: hsla(224, 25%, 6%, 0.85);
    border-bottom: 1px solid var(--panel-border);
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.teleprompter-info h3 {
    font-size: 1.25rem;
}

.teleprompter-info span {
    font-size: 0.78rem;
    color: var(--accent);
    font-weight: 600;
}

/* Scrolling viewport */
.teleprompter-viewport {
    flex-grow: 1;
    position: relative;
    overflow: hidden;
    background-color: #03060d;
    padding: 0 10%;
}

/* Accent focus markers to guide reader's eye */
.focus-marker-top, .focus-marker-bottom {
    position: absolute;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent) 20%, var(--accent) 80%, transparent);
    z-index: 10;
    opacity: 0.25;
}

.focus-marker-top {
    top: 40%;
}

.focus-marker-bottom {
    top: 60%;
}

/* Scroll area content */
.teleprompter-scroll-container {
    height: 100%;
    overflow-y: scroll;
    scrollbar-width: none; /* Hide standard scrolls for teleprompter */
    scroll-behavior: smooth;
    padding: 40vh 0; /* Add spacer so reader starts and ends in middle */
}

.teleprompter-scroll-container::-webkit-scrollbar {
    display: none; /* Safari / Chrome */
}

.teleprompter-text-body {
    display: flex;
    flex-direction: column;
    gap: 3.5rem;
    text-align: center;
}

.teleprompter-p {
    font-weight: 500;
    color: hsl(0, 0%, 55%);
    line-height: 1.6;
    transition: all 0.25s ease;
    transform: scale(0.95);
    opacity: 0.4;
}

/* Highlight text currently in the focus read window */
.teleprompter-p.in-focus {
    color: #fff;
    transform: scale(1.03);
    opacity: 1;
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.15);
}

/* Control footer bar */
.teleprompter-controls {
    background-color: hsla(224, 25%, 5%, 0.92);
    border-top: 1px solid var(--panel-border);
    padding: 1.5rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.teleprompter-controls-row {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.teleprompter-controls-grid {
    display: flex;
    gap: 2.5rem;
    width: 100%;
    max-width: 700px;
    justify-content: center;
}

.teleprompter-slider-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    width: 100%;
    max-width: 320px;
}

.teleprompter-slider-group label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.slider-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-muted);
}

.slider-wrapper input[type="range"] {
    flex-grow: 1;
}

.teleprompter-keyboard-tip {
    font-size: 0.72rem;
    color: var(--text-muted);
}

kbd {
    background-color: var(--input-border);
    border: 1px solid var(--panel-border);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.65rem;
    font-family: inherit;
    box-shadow: var(--shadow-sm);
}

/* Toast System Styling */
.toast-container {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    pointer-events: none;
}

.toast {
    background-color: hsla(224, 25%, 15%, 0.9);
    border: 1px solid var(--panel-border);
    color: var(--text-primary);
    padding: 0.85rem 1.25rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.65rem;
    min-width: 260px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    pointer-events: auto;
    animation: toast-in 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.toast-success {
    border-color: hsla(142, 70%, 45%, 0.4);
    color: hsl(142, 70%, 80%);
}

.toast-success svg {
    color: var(--success);
}

.toast-info {
    border-color: hsla(180, 100%, 42%, 0.4);
    color: hsl(180, 100%, 80%);
}

.toast-info svg {
    color: var(--accent);
}

@keyframes toast-in {
    from {
        transform: translateY(20px) scale(0.9);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.toast.toast-out {
    animation: toast-out 0.25s ease forwards;
}

@keyframes toast-out {
    to {
        transform: translateY(15px) scale(0.95);
        opacity: 0;
    }
}

/* ==========================================================================
   RESPONSIVE DESIGN BREAKPOINTS
   ========================================================================== */

@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .app-container {
        padding: 1.5rem 1rem;
    }
}

@media (max-width: 768px) {
    .app-header {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        text-align: center;
    }
    
    .logo-area {
        justify-content: center;
    }
    
    .tagline {
        padding-left: 0;
        border-left: none;
        margin-right: 0;
    }
    
    #toggle-history-btn {
        width: 100%;
    }
    
    .panel {
        padding: 1.25rem;
    }
    
    .tts-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .teleprompter-viewport {
        padding: 0 5%;
    }
}