/* ============================================
   IMPORT FONTS
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=DM+Sans:ital,wght@0,400;0,500;1,400&display=swap');

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
    /* Core palette — deep dark with electric accents */
    --bg-base:        #0a0c10;
    --bg-surface:     #111318;
    --bg-elevated:    #181c24;
    --bg-hover:       #1e2330;
    --bg-subtle:      #1a1f2e;

    --accent:         #00e5a0;
    --accent-dim:     #00c488;
    --accent-glow:    rgba(0, 229, 160, 0.15);
    --accent-glow-lg: rgba(0, 229, 160, 0.06);

    --accent2:        #3d8bff;
    --accent2-glow:   rgba(61, 139, 255, 0.15);

    --text-primary:   #f0f2f7;
    --text-secondary: #8892a4;
    --text-muted:     #4a5568;
    --text-inverse:   #0a0c10;

    --border:         rgba(255, 255, 255, 0.07);
    --border-accent:  rgba(0, 229, 160, 0.3);
    --border-strong:  rgba(255, 255, 255, 0.12);

    --success:        #00e5a0;
    --danger:         #ff4d6a;

    --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
    --shadow-md:  0 4px 16px rgba(0,0,0,0.5);
    --shadow-lg:  0 8px 32px rgba(0,0,0,0.6);
    --shadow-xl:  0 20px 60px rgba(0,0,0,0.7);
    --glow-accent: 0 0 24px rgba(0, 229, 160, 0.25);
    --glow-blue:   0 0 24px rgba(61, 139, 255, 0.25);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 22px;
    --radius-2xl: 32px;

    --font-display: 'Plus Jakarta Sans', system-ui, sans-serif;
    --font-body:    'DM Sans', system-ui, sans-serif;

    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition: 0.2s var(--ease-out);
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background: var(--bg-base);
    line-height: 1.6;
    overflow-x: hidden;
    /* Subtle noise texture overlay */
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.035'/%3E%3C/svg%3E");
}

img { max-width: 100%; height: auto; display: block; }

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

button {
    font-family: inherit;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    line-height: 1.15;
    font-weight: 700;
}

/* ============================================
   UTILITY
   ============================================ */
.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

.hidden { display: none !important; }

/* ============================================
   HEADER
   ============================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 12, 16, 0.85);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
}

/* Thin accent line at very top */
.site-header::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), var(--accent2), transparent);
    opacity: 0.7;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.9rem 0;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.1rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.logo svg { color: var(--accent); flex-shrink: 0; }

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 0.25rem;
    font-size: 0.8125rem;
}

.nav-links a {
    color: var(--text-muted);
    font-weight: 500;
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-sm);
    letter-spacing: 0.01em;
}

.nav-links a:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

/* ============================================
   HERO
   ============================================ */
.hero {
    padding: 3.5rem 0 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: var(--bg-base);
}

/* Radial glow backdrop */
.hero::before {
    content: '';
    position: absolute;
    top: -40%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 500px;
    background: radial-gradient(ellipse at center,
        rgba(0, 229, 160, 0.08) 0%,
        rgba(61, 139, 255, 0.05) 40%,
        transparent 70%);
    pointer-events: none;
}

/* Grid lines decoration */
.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0,229,160,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,229,160,0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #ffffff 0%, var(--accent) 60%, var(--accent2) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.7s var(--ease-out) both;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 520px;
    margin: 0 auto;
    line-height: 1.7;
    animation: fadeInUp 0.7s var(--ease-out) 0.1s both;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(18px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ============================================
   CONVERTER SECTION
   ============================================ */
.converter-section {
    padding: 2rem 0 3.5rem;
}

.converter-card {
    background: var(--bg-surface);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border-strong);
    padding: 2rem 1.5rem;
    box-shadow: var(--shadow-xl);
    animation: fadeInUp 0.7s var(--ease-out) 0.2s both;
    position: relative;
    overflow: hidden;
}

/* Subtle top-edge glow on card */
.converter-card::before {
    content: '';
    position: absolute;
    top: 0; left: 10%; right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.5;
}

/* ── Mode Toggle ── */
.mode-toggle {
    display: flex;
    gap: 6px;
    justify-content: center;
    margin-bottom: 2rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 5px;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.mode-btn {
    padding: 0.5rem 1.5rem;
    border-radius: 999px;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--text-muted);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all 0.25s var(--ease-out);
    white-space: nowrap;
}

.mode-btn:hover:not(.active) {
    color: var(--text-secondary);
    background: var(--bg-hover);
}

.mode-btn.active {
    background: var(--accent);
    color: var(--text-inverse);
    box-shadow: 0 0 16px rgba(0, 229, 160, 0.4), 0 2px 8px rgba(0,0,0,0.3);
    transform: scale(1.02);
}

/* ── Upload Area ── */
.upload-area {
    text-align: center;
    padding: 3rem 1.5rem;
    border: 2px dashed var(--border-strong);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all 0.25s var(--ease-out);
    position: relative;
    overflow: hidden;
    background: var(--bg-elevated);
}

.upload-area::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, var(--accent-glow-lg), transparent 70%);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--accent);
    background: var(--bg-hover);
    box-shadow: 0 0 0 4px var(--accent-glow), inset 0 0 40px rgba(0,229,160,0.04);
}

.upload-area:hover::before,
.upload-area.drag-over::before { opacity: 1; }

.upload-icon {
    margin: 0 auto 1.25rem;
    color: var(--accent);
    filter: drop-shadow(0 0 8px rgba(0,229,160,0.5));
    transition: transform 0.3s var(--ease-spring);
}

.upload-area:hover .upload-icon {
    transform: translateY(-4px) scale(1.05);
}

.upload-area h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.upload-area p {
    color: var(--text-muted);
    margin-bottom: 1.75rem;
    font-size: 0.9rem;
}

/* ── Processing Area ── */
.processing-area {
    padding: 0.5rem 0;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    margin-bottom: 1.5rem;
}

.file-icon {
    flex-shrink: 0;
    color: var(--accent);
    filter: drop-shadow(0 0 6px rgba(0,229,160,0.4));
}

.file-details { flex: 1; min-width: 0; }

.file-name {
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    letter-spacing: -0.01em;
}

.file-size {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
    font-variant-numeric: tabular-nums;
}

.conversion-arrow {
    text-align: center;
    margin: 0.875rem 0;
    color: var(--accent);
    filter: drop-shadow(0 0 6px rgba(0,229,160,0.5));
    animation: pulseArrow 2s ease-in-out infinite;
}

@keyframes pulseArrow {
    0%, 100% { transform: translateX(0); opacity: 0.7; }
    50%       { transform: translateX(4px); opacity: 1; }
}

.output-format {
    text-align: center;
    margin-bottom: 1.75rem;
}

.format-badge {
    display: inline-block;
    background: var(--accent);
    color: var(--text-inverse);
    padding: 0.5rem 1.75rem;
    border-radius: 999px;
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1rem;
    letter-spacing: 0.08em;
    margin-bottom: 0.5rem;
    box-shadow: 0 0 20px rgba(0,229,160,0.35);
}

.format-details {
    color: var(--text-muted);
    font-size: 0.8125rem;
    letter-spacing: 0.02em;
}

/* ── Progress ── */
.progress-container { margin-bottom: 1.75rem; }

.progress-bar {
    height: 6px;
    background: var(--bg-elevated);
    border-radius: 999px;
    overflow: visible;
    margin-bottom: 0.75rem;
    position: relative;
    border: 1px solid var(--border);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    border-radius: 999px;
    width: 0;
    transition: width 0.4s var(--ease-out);
    position: relative;
    box-shadow: 0 0 10px rgba(0,229,160,0.6);
}

/* Animated shimmer on progress bar */
.progress-fill::after {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 60px; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.5), transparent);
    border-radius: 999px;
    animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
    0%   { opacity: 0; transform: translateX(-20px); }
    50%  { opacity: 1; }
    100% { opacity: 0; transform: translateX(20px); }
}

.progress-text {
    text-align: center;
    font-size: 0.8125rem;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 0.01em;
}

/* ── Action Buttons ── */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

/* ── Buttons ── */
.btn-primary,
.btn-secondary,
.btn-text {
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.22s var(--ease-out);
    letter-spacing: -0.01em;
}

.btn-primary {
    background: var(--accent);
    color: var(--text-inverse);
    font-family: var(--font-display);
    font-weight: 700;
    box-shadow: 0 0 20px rgba(0,229,160,0.3), 0 4px 12px rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.15);
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-dim);
    box-shadow: 0 0 30px rgba(0,229,160,0.45), 0 6px 20px rgba(0,0,0,0.4);
    transform: translateY(-2px) scale(1.01);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0) scale(0.99);
    box-shadow: 0 0 12px rgba(0,229,160,0.3);
}

.btn-primary:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-large {
    padding: 1.05rem 2.5rem;
    font-size: 1rem;
    border-radius: var(--radius-lg);
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-secondary);
    border: 1px solid var(--border-strong);
}

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

.btn-text {
    background: transparent;
    color: var(--text-muted);
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
}

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

/* Spinner */
.spinner {
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(0,0,0,0.2);
    border-top-color: var(--text-inverse);
    border-radius: 50%;
    animation: spin 0.65s linear infinite;
    flex-shrink: 0;
}

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

/* ── Download Area ── */
.download-area {
    text-align: center;
    padding: 2rem 1rem 1rem;
    border-top: 1px solid var(--border);
    margin-top: 1.5rem;
}

.success-icon {
    color: var(--accent);
    margin: 0 auto 1.25rem;
    filter: drop-shadow(0 0 12px rgba(0,229,160,0.6));
    animation: successPop 0.5s var(--ease-spring) both;
}

@keyframes successPop {
    from { transform: scale(0.5); opacity: 0; }
    to   { transform: scale(1);   opacity: 1; }
}

.download-area h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--text-primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ── Ad Container ── */
.ad-container {
    margin-top: 2rem;
    text-align: center;
}

/* ============================================
   FEATURES SECTION
   ============================================ */
.features {
    padding: 4rem 0;
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    position: relative;
}

.features h2,
.how-it-works h2,
.faq h2 {
    text-align: center;
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 2.5rem;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

/* Accent underline on section titles */
.features h2::after,
.how-it-works h2::after,
.faq h2::after {
    content: '';
    display: block;
    width: 40px;
    height: 3px;
    background: var(--accent);
    margin: 0.75rem auto 0;
    border-radius: 999px;
    box-shadow: 0 0 10px rgba(0,229,160,0.5);
}

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

.feature-card {
    padding: 1.5rem;
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: all 0.25s var(--ease-out);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s var(--ease-out);
}

.feature-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.4), 0 0 0 1px var(--border-accent);
}

.feature-card:hover::before { transform: scaleX(1); }

.feature-icon {
    width: 2.75rem;
    height: 2.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-glow);
    border: 1px solid var(--border-accent);
    color: var(--accent);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: var(--accent);
    color: var(--text-inverse);
    box-shadow: var(--glow-accent);
}

.feature-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.65;
}

/* ============================================
   HOW IT WORKS
   ============================================ */
.how-it-works {
    padding: 4rem 0;
    background: var(--bg-base);
    position: relative;
    overflow: hidden;
}

.how-it-works::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0,229,160,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,229,160,0.025) 1px, transparent 1px);
    background-size: 80px 80px;
    pointer-events: none;
}

.steps {
    display: grid;
    gap: 2rem;
    grid-template-columns: 1fr;
    position: relative;
    z-index: 1;
}

.step {
    text-align: center;
    padding: 2rem 1.25rem;
    background: var(--bg-surface);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    transition: all 0.25s var(--ease-out);
    position: relative;
}

.step:hover {
    border-color: var(--border-accent);
    box-shadow: 0 0 30px rgba(0,229,160,0.08);
}

.step-number {
    width: 3rem;
    height: 3rem;
    background: var(--accent);
    color: var(--text-inverse);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 800;
    margin: 0 auto 1.25rem;
    font-family: var(--font-display);
    box-shadow: 0 0 20px rgba(0,229,160,0.4);
}

.step h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.step p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    max-width: 280px;
    margin: 0 auto;
    line-height: 1.65;
}

/* ============================================
   FAQ
   ============================================ */
.faq {
    padding: 4rem 0;
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
}

.faq-list {
    max-width: 760px;
    margin: 0 auto;
    display: grid;
    gap: 0.75rem;
}

.faq-item {
    padding: 1.5rem;
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    transition: all 0.2s var(--ease-out);
}

.faq-item:hover {
    border-color: var(--border-accent);
    border-left-color: var(--accent);
    background: var(--bg-hover);
    transform: translateX(3px);
}

.faq-item h3 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.625rem;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.faq-item p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.7;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    background: var(--bg-surface);
    color: var(--text-primary);
    padding: 3rem 0 1.5rem;
    border-top: 1px solid var(--border);
    position: relative;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0.4;
}

.footer-content {
    display: grid;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand .logo {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-links {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: 1fr 1fr;
}

.footer-column h4 {
    font-size: 0.75rem;
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.875rem;
    color: var(--text-muted);
}

.footer-column ul { list-style: none; }

.footer-column li { margin-bottom: 0.5rem; }

.footer-column a {
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: var(--transition);
}

.footer-column a:hover {
    color: var(--accent);
}

.footer-bottom {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.8125rem;
}

/* ============================================
   TABLET  (min-width: 640px)
   ============================================ */
@media (min-width: 640px) {
    .container { padding: 0 2rem; }

    .converter-card { padding: 2.5rem 2rem; }

    .upload-area { padding: 3.5rem 2.5rem; }

    .features-grid { grid-template-columns: repeat(2, 1fr); gap: 1.25rem; }

    .action-buttons {
        flex-direction: row;
        justify-content: center;
    }

    .steps {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
}

/* ============================================
   DESKTOP  (min-width: 1024px)
   ============================================ */
@media (min-width: 1024px) {
    .nav-links { gap: 0.125rem; font-size: 0.875rem; }

    .hero { padding: 5rem 0 4rem; }

    .converter-section { padding: 2.5rem 0 5rem; }

    .converter-card { padding: 3rem 2.75rem; }

    .upload-area { padding: 4.5rem 3rem; }

    .features { padding: 5.5rem 0; }
    .features h2 { margin-bottom: 3rem; }
    .features-grid { grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }

    .how-it-works { padding: 5.5rem 0; }
    .steps { gap: 2rem; }

    .faq { padding: 5.5rem 0; }

    .footer-content {
        grid-template-columns: 2fr 1fr;
        gap: 5rem;
        align-items: start;
    }
}

/* ============================================
   PRINT
   ============================================ */
@media print {
    .site-header, .site-footer,
    .converter-section, .ad-container { display: none; }
}