/* ============================================
   Edeson Text To Speech - Stylesheet
   Theme: Navy Blue, Dark Yellow, White, Light Gray
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --navy-blue: #1a237e;
    --navy-blue-dark: #0d1259;
    --navy-blue-light: #283593;
    --dark-yellow: #f9a825;
    --dark-yellow-dark: #f57f17;
    --dark-yellow-light: #fbc02d;
    --white: #ffffff;
    --light-gray: #f5f5f5;
    --gray-100: #fafafa;
    --gray-200: #eeeeee;
    --gray-300: #e0e0e0;
    --gray-400: #bdbdbd;
    --gray-500: #9e9e9e;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;
    --gray-900: #212121;
    --danger: #e53935;
    --danger-light: #ffebee;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.15);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --max-width: 1200px;
}

/* --- CSS Reset --- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img, svg {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
    font-size: inherit;
}

select, input {
    font-family: inherit;
    font-size: inherit;
}

ul, ol {
    list-style: none;
}

/* --- Container --- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Section Title --- */
.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--navy-blue);
    text-align: center;
    margin-bottom: 40px;
    letter-spacing: -0.02em;
}

/* ============================================
   HEADER
   ============================================ */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
}

.app-name {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--navy-blue);
    white-space: nowrap;
}

.nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-600);
    border-radius: var(--radius-full);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-link:hover {
    color: var(--navy-blue);
    background-color: var(--gray-100);
}

.nav-link:focus-visible {
    outline: 2px solid var(--dark-yellow);
    outline-offset: 2px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.mobile-menu-btn:hover {
    background-color: var(--gray-100);
}

.hamburger-line {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--gray-700);
    border-radius: 2px;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.mobile-menu-btn[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav */
.mobile-nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 998;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.mobile-nav-overlay[hidden] {
    display: block;
    pointer-events: none;
    opacity: 0;
}

.mobile-nav-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-nav {
    position: fixed;
    top: 64px;
    right: 0;
    width: 260px;
    height: calc(100vh - 64px);
    background: var(--white);
    z-index: 999;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.mobile-nav[hidden] {
    display: flex;
}

.mobile-nav.active {
    transform: translateX(0);
}

.mobile-nav-link {
    padding: 14px 16px;
    font-size: 1rem;
    font-weight: 500;
    color: var(--gray-700);
    border-radius: var(--radius-md);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.mobile-nav-link:hover {
    color: var(--navy-blue);
    background-color: var(--gray-100);
}

/* ============================================
   HERO
   ============================================ */
.hero {
    background: linear-gradient(135deg, var(--navy-blue) 0%, var(--navy-blue-light) 50%, var(--navy-blue-dark) 100%);
    padding: 80px 0 100px;
    overflow: hidden;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(249, 168, 37, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
    margin-bottom: 36px;
    max-width: 520px;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: var(--dark-yellow);
    color: var(--navy-blue-dark);
    font-size: 1.05rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
    box-shadow: 0 4px 20px rgba(249, 168, 37, 0.4);
}

.hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(249, 168, 37, 0.5);
    background: var(--dark-yellow-light);
}

.hero-cta:focus-visible {
    outline: 2px solid var(--white);
    outline-offset: 3px;
}

.hero-cta:active {
    transform: translateY(0);
}

.cta-arrow {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
}

.hero-cta:hover .cta-arrow {
    transform: translateX(4px);
}

.hero-icon-wrapper {
    flex-shrink: 0;
    animation: float 6s ease-in-out infinite;
}

.hero-speaker {
    width: 200px;
    height: 200px;
    filter: drop-shadow(0 0 30px rgba(249, 168, 37, 0.2));
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* ============================================
   TEXT INPUT SECTION
   ============================================ */
.text-section {
    padding: 80px 0 40px;
    background: var(--light-gray);
}

.textarea-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 2px solid var(--gray-200);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.textarea-wrapper:focus-within {
    border-color: var(--navy-blue-light);
    box-shadow: var(--shadow-lg), 0 0 0 3px rgba(26, 35, 126, 0.08);
}

.text-input {
    width: 100%;
    min-height: 150px;
    padding: 24px;
    border: none;
    outline: none;
    resize: vertical;
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--gray-800);
    background: transparent;
}

.text-input::placeholder {
    color: var(--gray-400);
}

.textarea-footer {
    padding: 12px 24px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: flex-end;
}

.char-counter {
    font-size: 0.85rem;
    color: var(--gray-500);
    font-variant-numeric: tabular-nums;
}

/* ============================================
   VOICE CONTROLS
   ============================================ */
.controls-section {
    padding: 40px 0 60px;
    background: var(--light-gray);
}

.controls-card {
    max-width: 900px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 40px;
    border: 1px solid var(--gray-200);
}

.controls-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--navy-blue);
    text-align: center;
    margin-bottom: 32px;
}

.controls-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.control-group--full {
    grid-column: 1 / -1;
}

.control-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-700);
    letter-spacing: 0.01em;
}

.select-wrapper {
    position: relative;
}

.control-select {
    width: 100%;
    padding: 12px 40px 12px 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    background: var(--white);
    color: var(--gray-800);
    font-size: 0.95rem;
    appearance: none;
    cursor: pointer;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23757575' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
}

.control-select:hover {
    border-color: var(--gray-300);
}

.control-select:focus {
    outline: none;
    border-color: var(--navy-blue-light);
    box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.08);
}

.voice-status {
    font-size: 0.8rem;
    color: var(--dark-yellow-dark);
    font-style: italic;
    min-height: 1.2em;
}

/* Range Sliders */
.range-wrapper {
    padding: 4px 0;
}

.control-range {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--gray-200);
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.control-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--navy-blue);
    border: 3px solid var(--white);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.control-range::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
}

.control-range::-moz-range-thumb {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--navy-blue);
    border: 3px solid var(--white);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    cursor: pointer;
}

.control-range:focus-visible {
    outline: 2px solid var(--dark-yellow);
    outline-offset: 4px;
}

.range-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 6px;
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* ============================================
   ACTION BUTTONS
   ============================================ */
.actions-section {
    padding: 0 0 80px;
    background: var(--light-gray);
}

.actions-grid {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.action-btn {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 20px 16px;
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.01em;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), opacity var(--transition-fast);
    border: 2px solid transparent;
    user-select: none;
}

.action-btn:active:not(:disabled) {
    transform: scale(0.96);
}

.action-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
}

/* Primary (Speak) */
.action-btn--primary {
    background: var(--navy-blue);
    color: var(--white);
    box-shadow: 0 4px 16px rgba(26, 35, 126, 0.3);
}

.action-btn--primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(26, 35, 126, 0.4);
}

.action-btn--primary.is-speaking {
    background: var(--dark-yellow);
    color: var(--navy-blue-dark);
    box-shadow: 0 4px 20px rgba(249, 168, 37, 0.4);
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 4px 20px rgba(249, 168, 37, 0.4); }
    50% { box-shadow: 0 4px 30px rgba(249, 168, 37, 0.6); }
}

/* Secondary (Pause/Resume) */
.action-btn--secondary {
    background: var(--white);
    color: var(--navy-blue);
    border-color: var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.action-btn--secondary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--navy-blue-light);
}

/* Danger (Stop) */
.action-btn--danger {
    background: var(--danger);
    color: var(--white);
    box-shadow: 0 4px 16px rgba(229, 57, 53, 0.25);
}

.action-btn--danger:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(229, 57, 53, 0.35);
}

/* Outline (Clear/Copy) */
.action-btn--outline {
    background: var(--white);
    color: var(--gray-700);
    border-color: var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.action-btn--outline:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--navy-blue);
    border-color: var(--navy-blue-light);
}

/* Accent (Download) */
.action-btn--accent {
    background: var(--dark-yellow);
    color: var(--navy-blue-dark);
    box-shadow: 0 4px 16px rgba(249, 168, 37, 0.3);
}

.action-btn--accent:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(249, 168, 37, 0.4);
    background: var(--dark-yellow-light);
}

/* ============================================
   FEATURES SECTION
   ============================================ */
.features-section {
    padding: 80px 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.feature-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    transition: background-color var(--transition-normal);
}

.feature-card:hover .feature-icon {
    background: rgba(26, 35, 126, 0.06);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--navy-blue);
    margin-bottom: 8px;
}

.feature-desc {
    font-size: 0.88rem;
    color: var(--gray-600);
    line-height: 1.55;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about-section {
    padding: 80px 0;
    background: var(--light-gray);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 1.05rem;
    color: var(--gray-700);
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-content p:last-child {
    margin-bottom: 0;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--navy-blue-dark);
    color: var(--white);
    padding: 60px 0 0;
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
}

.footer-app-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
}

.footer-developer {
    text-align: right;
}

.developer-name {
    font-size: 1rem;
    color: var(--white);
    margin-bottom: 4px;
}

.developer-role {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 16px;
}

.developer-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: flex-end;
}

.footer-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.88rem;
    color: var(--dark-yellow);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--dark-yellow-light);
}

.footer-link:focus-visible {
    outline: 2px solid var(--dark-yellow);
    outline-offset: 2px;
}

.footer-link-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.footer-copyright {
    padding: 24px 0;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   MODAL
   ============================================ */
.modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal[hidden] {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-card {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    max-width: 440px;
    width: 100%;
    text-align: center;
    box-shadow: var(--shadow-xl);
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.modal.active .modal-card {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 20px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: var(--gray-500);
    border-radius: var(--radius-full);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.modal-close:hover {
    color: var(--gray-800);
    background: var(--gray-100);
}

.modal-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
}

.modal-icon svg {
    width: 100%;
    height: 100%;
}

.modal-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--navy-blue);
    margin-bottom: 12px;
}

.modal-text {
    font-size: 0.95rem;
    color: var(--gray-600);
    line-height: 1.65;
    margin-bottom: 28px;
}

.modal-btn {
    padding: 12px 32px;
    background: var(--navy-blue);
    color: var(--white);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 4px 12px rgba(26, 35, 126, 0.25);
}

.modal-btn:hover {
    background: var(--navy-blue-light);
    box-shadow: 0 6px 20px rgba(26, 35, 126, 0.3);
}

.modal-btn:focus-visible {
    outline: 2px solid var(--dark-yellow);
    outline-offset: 3px;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
:focus-visible {
    outline: 2px solid var(--dark-yellow);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html {
        scroll-behavior: auto;
    }
}

/* ============================================
   RESPONSIVE - Tablet
   ============================================ */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.4rem;
    }

    .hero-container {
        gap: 40px;
    }

    .hero-speaker {
        width: 160px;
        height: 160px;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .controls-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .actions-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ============================================
   RESPONSIVE - Mobile
   ============================================ */
@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .section-title {
        font-size: 1.6rem;
        margin-bottom: 28px;
    }

    .hero {
        padding: 60px 0 80px;
    }

    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        max-width: 100%;
        font-size: 1rem;
    }

    .hero-cta {
        padding: 14px 28px;
        font-size: 1rem;
    }

    .hero-speaker {
        width: 130px;
        height: 130px;
    }

    .controls-card {
        padding: 28px 20px;
    }

    .controls-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .actions-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .action-btn {
        padding: 16px 12px;
    }

    .btn-icon {
        width: 24px;
        height: 24px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .feature-card {
        padding: 24px 20px;
    }

    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 28px;
    }

    .footer-developer {
        text-align: center;
    }

    .developer-links {
        align-items: center;
    }

    .modal-card {
        padding: 36px 24px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .header-container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 1.7rem;
    }

    .hero-subtitle {
        font-size: 0.92rem;
    }

    .text-input {
        padding: 16px;
        font-size: 0.95rem;
    }

    .actions-grid {
        grid-template-columns: 1fr 1fr;
    }

    .action-btn span {
        font-size: 0.8rem;
    }
}

/* ============================================
   PRINT
   ============================================ */
@media print {
    .header,
    .hero,
    .controls-section,
    .actions-section,
    .footer,
    .modal {
        display: none;
    }
}