/* ================================================
   AUMINEI - Eccentric Audio Tools
   Inspired by sequins.music
   ================================================ */

:root {
    --black: #000000;
    --gray-950: #050505;
    --gray-900: #0a0a0a;
    --gray-800: #141414;
    --gray-700: #1c1c1c;
    --gray-600: #2a2a2a;
    --gray-500: #404040;
    --gray-400: #525252;
    --gray-300: #737373;
    --gray-200: #a3a3a3;
    --gray-100: #d4d4d4;
    --white: #fafafa;

    --font-serif: 'Instrument Serif', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', monospace;

    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

::selection {
    background: var(--white);
    color: var(--black);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--black);
    color: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

/* Skip Link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    padding: 1rem;
    background: var(--white);
    color: var(--black);
    z-index: 9999;
}

.skip-link:focus {
    top: 0;
}

/* ================================================
   NAVIGATION
   ================================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 2.5rem;
    z-index: 1000;
    mix-blend-mode: difference;
}

.nav-logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-style: italic;
    letter-spacing: -0.02em;
}

.nav-products {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 2.5rem;
}

.nav-product {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    letter-spacing: -0.01em;
    color: var(--gray-400);
    transition: color 0.2s ease;
}

.nav-product:hover,
.nav-product.active {
    color: var(--white);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--gray-400);
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--white);
}

/* ================================================
   HERO
   ================================================ */

.hero {
    position: relative;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.4;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.3) 0%,
        rgba(0, 0, 0, 0.1) 50%,
        rgba(0, 0, 0, 0.8) 100%
    );
}

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

.tagline {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-style: italic;
    letter-spacing: -0.02em;
    color: var(--gray-100);
}

.scroll-hint {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    z-index: 1;
}

.scroll-hint span {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray-400);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--gray-400), transparent);
    animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
    0%, 100% { opacity: 0.3; transform: scaleY(1); }
    50% { opacity: 1; transform: scaleY(1.2); }
}

/* ================================================
   PRODUCT SLIDES
   ================================================ */

.product-slide {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 6rem 2.5rem;
    border-top: 1px solid var(--gray-800);
}

.product-slide--muted {
    opacity: 0.5;
}

.slide-content {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.slide-info {
    max-width: 500px;
}

.product-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--gray-500);
    letter-spacing: 0.05em;
}

.slide-info h1 {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 400;
    font-style: italic;
    letter-spacing: -0.03em;
    line-height: 1;
    margin: 0.5rem 0 1rem;
}

.product-type {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--gray-300);
    margin-bottom: 1.5rem;
}

.product-desc {
    font-size: 1.0625rem;
    color: var(--gray-200);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.product-specs {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem 2rem;
    margin-bottom: 2.5rem;
    padding: 1.5rem 0;
    border-top: 1px solid var(--gray-800);
    border-bottom: 1px solid var(--gray-800);
}

.spec {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.spec-key {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--gray-500);
}

.spec-val {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--white);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    padding: 1rem 2rem;
    border: none;
    cursor: pointer;
    transition: all 0.2s var(--ease-out);
}

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

.btn-primary:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

/* Slide Visual */
.slide-visual {
    display: flex;
    justify-content: center;
}

.synth-mockup {
    width: 100%;
    max-width: 480px;
}

.mockup-screen {
    background: var(--gray-900);
    border: 1px solid var(--gray-700);
    border-radius: 8px;
    overflow: hidden;
}

.screen-header {
    display: flex;
    gap: 6px;
    padding: 12px 16px;
    background: var(--gray-800);
    border-bottom: 1px solid var(--gray-700);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--gray-600);
}

.screen-content {
    padding: 2rem;
}

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

.param-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.15em;
    color: var(--gray-500);
    margin-bottom: 0.75rem;
}

.knobs {
    display: flex;
    gap: 1rem;
}

.knob {
    width: 48px;
    height: 48px;
    background: linear-gradient(145deg, var(--gray-700), var(--gray-800));
    border-radius: 50%;
    border: 2px solid var(--gray-600);
    position: relative;
    transition: border-color 0.2s ease;
}

.knob:hover {
    border-color: var(--gray-400);
}

.knob::before {
    content: attr(data-label);
    position: absolute;
    bottom: -1.25rem;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-mono);
    font-size: 0.5625rem;
    letter-spacing: 0.05em;
    color: var(--gray-500);
}

.knob::after {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 10px;
    background: var(--white);
    border-radius: 1px;
}

.waveform-display {
    height: 50px;
    background: var(--gray-800);
    border-radius: 4px;
    margin: 2rem 0 1.5rem;
    padding: 0 1rem;
    display: flex;
    align-items: center;
}

.wave-path {
    fill: none;
    stroke: var(--gray-400);
    stroke-width: 2;
    animation: wave-animate 3s ease-in-out infinite;
}

@keyframes wave-animate {
    0%, 100% {
        d: path("M0,25 Q10,10 20,25 T40,25 T60,25 T80,25 T100,25 T120,25 T140,25 T160,25 T180,25 T200,25");
    }
    50% {
        d: path("M0,25 Q10,40 20,25 T40,25 T60,25 T80,25 T100,25 T120,25 T140,25 T160,25 T180,25 T200,25");
    }
}

.tooltip-preview {
    background: var(--gray-800);
    border: 1px solid var(--gray-600);
    border-radius: 6px;
    padding: 1rem;
}

.tooltip-title {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.tooltip-text {
    font-size: 0.8125rem;
    color: var(--gray-300);
    line-height: 1.5;
}

/* Mystery Box */
.mystery-box {
    width: 200px;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px dashed var(--gray-600);
    border-radius: 8px;
}

.mystery-box span {
    font-family: var(--font-serif);
    font-size: 4rem;
    font-style: italic;
    color: var(--gray-600);
}

/* ================================================
   DOWNLOAD SECTION
   ================================================ */

.download-section {
    padding: 8rem 2.5rem;
    background: var(--gray-950);
    border-top: 1px solid var(--gray-800);
    text-align: center;
}

.download-content {
    max-width: 600px;
    margin: 0 auto;
}

.download-section h2 {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 400;
    font-style: italic;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.download-price {
    font-family: var(--font-mono);
    font-size: 3rem;
    font-weight: 500;
    letter-spacing: -0.03em;
}

.download-sub {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin-bottom: 2.5rem;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-download {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--white);
    color: var(--black);
    padding: 1rem 1.5rem;
    min-width: 220px;
    text-align: left;
}

.btn-download:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

.btn-icon {
    font-size: 1.25rem;
}

.btn-text {
    display: flex;
    flex-direction: column;
}

.btn-platform {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
}

.btn-formats {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--gray-500);
}

.refund-guarantee {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 1.5rem;
}

.refund-guarantee a {
    color: var(--gray-400);
    text-decoration: underline;
    transition: color 0.2s ease;
}

.refund-guarantee a:hover {
    color: var(--white);
}

/* ================================================
   POLICY PAGE
   ================================================ */

.policy-section {
    min-height: 100vh;
    padding: 8rem 2.5rem 4rem;
}

.policy-content {
    max-width: 800px;
    margin: 0 auto;
}

.policy-content h1 {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 400;
    font-style: italic;
    letter-spacing: -0.03em;
    margin-bottom: 3rem;
}

.policy-block {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gray-800);
}

.policy-block:last-of-type {
    border-bottom: none;
}

.policy-block h2 {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    margin-bottom: 1rem;
    color: var(--white);
}

.policy-block p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--gray-200);
    margin-bottom: 1rem;
}

.policy-block p:last-child {
    margin-bottom: 0;
}

.policy-block ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.policy-block li {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--gray-200);
    margin-bottom: 0.5rem;
}

.policy-block a {
    color: var(--white);
    text-decoration: underline;
    transition: color 0.2s ease;
}

.policy-block a:hover {
    color: var(--gray-300);
}

.policy-cta {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-800);
}

.refund-cta-top {
    text-align: center;
    padding: 2.5rem;
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    border-radius: 8px;
    margin-bottom: 3rem;
}

.btn-refund {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 1rem 2.5rem;
    background: var(--white);
    color: var(--black);
    border: none;
    cursor: pointer;
    transition: all 0.2s var(--ease-out);
    margin-bottom: 0.75rem;
}

.btn-refund:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

.refund-cta-note {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* ================================================
   FOOTER
   ================================================ */

.footer {
    padding: 4rem 2.5rem;
    border-top: 1px solid var(--gray-800);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
    max-width: 1400px;
    margin: 0 auto 3rem;
}

.footer-logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-style: italic;
    display: block;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--gray-500);
}

.footer-heading {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray-500);
    margin-bottom: 1rem;
}

.footer-col a {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--gray-300);
    padding: 0.25rem 0;
    transition: color 0.2s ease;
}

.footer-col a:hover {
    color: var(--white);
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-800);
}

.footer-bottom p {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--gray-600);
}

/* ================================================
   HELP PAGE
   ================================================ */

.help-page {
    display: flex;
    min-height: 100vh;
    padding-top: 4rem;
}

.help-sidebar {
    width: 280px;
    flex-shrink: 0;
    position: sticky;
    top: 4rem;
    height: calc(100vh - 4rem);
    overflow-y: auto;
    border-right: 1px solid var(--gray-800);
    background: var(--gray-950);
}

.help-nav {
    padding: 2rem 1.5rem;
}

.help-nav-toggle {
    display: none;
    width: 100%;
    padding: 0.75rem;
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    border-radius: 4px;
    color: var(--white);
    font-family: var(--font-mono);
    font-size: 0.875rem;
    cursor: pointer;
    margin-bottom: 1rem;
}

.help-nav-section {
    margin-bottom: 2rem;
}

.help-nav-title {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray-500);
    margin-bottom: 0.75rem;
}

.help-nav-list {
    list-style: none;
}

.help-nav-list li {
    margin-bottom: 0.25rem;
}

.help-nav-list a {
    display: block;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem;
    color: var(--gray-300);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.help-nav-list a:hover,
.help-nav-list a:focus {
    background: var(--gray-800);
    color: var(--white);
}

.help-content {
    flex: 1;
    max-width: 900px;
    padding: 3rem 4rem 6rem;
    margin: 0 auto;
}

.help-header {
    margin-bottom: 4rem;
}

.help-header h1 {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 400;
    font-style: italic;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
}

.help-header p {
    font-size: 1.125rem;
    color: var(--gray-300);
}

.help-section {
    margin-bottom: 5rem;
    scroll-margin-top: 5rem;
}

.help-section h2 {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 400;
    font-style: italic;
    letter-spacing: -0.02em;
    margin-bottom: 2rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--gray-800);
}

.help-block {
    margin-bottom: 2.5rem;
}

.help-block h3 {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    margin-bottom: 1rem;
    color: var(--white);
}

.help-block p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--gray-200);
    margin-bottom: 1rem;
}

.help-block p:last-child {
    margin-bottom: 0;
}

.help-block ul,
.help-block ol {
    margin: 1rem 0 1rem 1.5rem;
    color: var(--gray-200);
}

.help-block li {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 0.5rem;
}

.help-block li strong {
    color: var(--white);
}

.help-block code {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    padding: 0.125rem 0.375rem;
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    border-radius: 3px;
    color: var(--gray-100);
}

.help-block a {
    color: var(--white);
    text-decoration: underline;
    transition: color 0.2s ease;
}

.help-block a:hover {
    color: var(--gray-300);
}

.help-contact {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--gray-900);
    border: 1px solid var(--gray-700);
    border-radius: 8px;
}

.help-contact p {
    font-size: 1.125rem;
    color: var(--gray-200);
    margin-bottom: 2rem;
}

.help-contact-methods {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.help-contact-note {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 1.5rem;
    margin-bottom: 0;
}

.chat-trigger {
    background: transparent;
    color: var(--white);
    border: 1px solid var(--gray-500);
}

.chat-trigger:hover {
    border-color: var(--white);
}

/* ================================================
   CHECKOUT PAGE
   ================================================ */

.checkout-page {
    min-height: 100vh;
    padding: 6rem 2rem 4rem;
    background: var(--gray-950);
}

.checkout-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 4rem;
    align-items: start;
}

.checkout-main {
    max-width: 600px;
}

.checkout-header {
    margin-bottom: 3rem;
}

.checkout-header h1 {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 400;
    font-style: italic;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.checkout-header p {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--gray-400);
}

.checkout-section {
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--gray-800);
}

.checkout-section:last-of-type {
    border-bottom: none;
}

.checkout-section h2 {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--gray-400);
    margin-bottom: 1.5rem;
}

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

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--gray-300);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select {
    width: 100%;
    font-family: var(--font-sans);
    font-size: 1rem;
    padding: 0.875rem 1rem;
    background: var(--gray-900);
    border: 1px solid var(--gray-700);
    border-radius: 4px;
    color: var(--white);
    transition: border-color 0.2s ease;
}

.form-group input::placeholder {
    color: var(--gray-500);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--gray-500);
}

.form-group select {
    cursor: pointer;
}

.form-hint {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 0.5rem;
}

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

.payment-placeholder {
    background: var(--gray-900);
    border: 1px solid var(--gray-700);
    border-radius: 8px;
    padding: 2rem;
}

.payment-note {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--gray-400);
    text-align: center;
    padding: 1.5rem;
    background: var(--gray-800);
    border: 1px dashed var(--gray-600);
    border-radius: 4px;
    margin-bottom: 2rem;
}

.secure-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 1.5rem;
}

.secure-icon {
    font-size: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 0.125rem;
    cursor: pointer;
    flex-shrink: 0;
}

.checkbox-label span {
    font-size: 0.875rem;
    color: var(--gray-300);
    line-height: 1.5;
}

.checkbox-label a {
    color: var(--white);
    text-decoration: underline;
}

.checkbox-label a:hover {
    color: var(--gray-300);
}

.btn-checkout {
    width: 100%;
    font-size: 1rem;
    padding: 1.25rem 2rem;
    margin-top: 2rem;
}

.checkout-footer-note {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--gray-500);
    text-align: center;
    margin-top: 1.5rem;
    line-height: 1.6;
}

/* Order Summary Sidebar */
.checkout-sidebar {
    position: sticky;
    top: 6rem;
}

.order-summary {
    background: var(--gray-900);
    border: 1px solid var(--gray-700);
    border-radius: 8px;
    padding: 2rem;
}

.order-summary h3 {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--gray-400);
    margin-bottom: 1.5rem;
}

.order-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
}

.order-item-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.order-item-name {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 500;
    color: var(--white);
}

.order-item-desc {
    font-size: 0.8125rem;
    color: var(--gray-400);
}

.order-item-price {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 500;
    color: var(--white);
}

.order-divider {
    height: 1px;
    background: var(--gray-700);
    margin: 1.5rem 0;
}

.order-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.order-total span:first-child {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--gray-400);
}

.order-total-amount {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--white);
}

.order-includes h4 {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--gray-500);
    margin-bottom: 1rem;
}

.order-includes ul {
    list-style: none;
}

.order-includes li {
    font-size: 0.875rem;
    color: var(--gray-300);
    padding: 0.5rem 0;
    padding-left: 1.25rem;
    position: relative;
}

.order-includes li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--gray-500);
}

.order-guarantees {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.guarantee-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
    color: var(--gray-300);
}

.guarantee-icon {
    font-size: 1rem;
    color: var(--gray-500);
}

.order-help-link {
    display: block;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--gray-400);
    text-decoration: underline;
    margin-top: 1.5rem;
    transition: color 0.2s ease;
}

.order-help-link:hover {
    color: var(--white);
}

/* Minimal Footer for Checkout */
.footer-minimal {
    padding: 2rem;
    border-top: 1px solid var(--gray-800);
}

.footer-minimal-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--gray-600);
}

.footer-minimal-links {
    display: flex;
    gap: 1.5rem;
}

.footer-minimal-links a {
    color: var(--gray-500);
    transition: color 0.2s ease;
}

.footer-minimal-links a:hover {
    color: var(--white);
}

/* ================================================
   CHAT WIDGET
   ================================================ */

.chat-widget {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 9999;
}

.chat-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--white);
    color: var(--black);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    transition: all 0.3s var(--ease-out);
}

.chat-toggle:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.5);
}

.chat-icon {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 500;
}

.chat-window {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 360px;
    max-height: 600px;
    background: var(--gray-900);
    border: 1px solid var(--gray-700);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
    animation: chat-slide-up 0.3s var(--ease-out);
}

.chat-window[hidden] {
    display: none;
}

@keyframes chat-slide-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    background: var(--gray-800);
    border-bottom: 1px solid var(--gray-700);
    border-radius: 8px 8px 0 0;
}

.chat-title {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
}

.chat-close {
    background: none;
    border: none;
    color: var(--gray-400);
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease;
}

.chat-close:hover {
    color: var(--white);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.25rem;
    max-height: 400px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.chat-message {
    display: flex;
    animation: message-fade-in 0.3s ease;
}

@keyframes message-fade-in {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chat-message.bot {
    justify-content: flex-start;
}

.chat-message.user {
    justify-content: flex-end;
}

.chat-text {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    line-height: 1.5;
    padding: 0.75rem 1rem;
    border-radius: 6px;
    max-width: 80%;
}

.chat-message.bot .chat-text {
    background: var(--gray-800);
    color: var(--gray-100);
    border: 1px solid var(--gray-700);
}

.chat-message.user .chat-text {
    background: var(--white);
    color: var(--black);
}

.chat-suggestions {
    padding: 0 1.25rem 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.chat-suggestion {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 0.5rem 0.875rem;
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    border-radius: 4px;
    color: var(--gray-200);
    cursor: pointer;
    transition: all 0.2s ease;
}

.chat-suggestion:hover {
    background: var(--gray-700);
    border-color: var(--gray-500);
    color: var(--white);
}

.chat-input-wrapper {
    display: flex;
    gap: 0.5rem;
    padding: 1rem 1.25rem;
    background: var(--gray-800);
    border-top: 1px solid var(--gray-700);
    border-radius: 0 0 8px 8px;
}

.chat-input {
    flex: 1;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    padding: 0.625rem 0.875rem;
    background: var(--gray-900);
    border: 1px solid var(--gray-700);
    border-radius: 4px;
    color: var(--white);
}

.chat-input::placeholder {
    color: var(--gray-500);
}

.chat-input:focus {
    outline: none;
    border-color: var(--gray-500);
}

.chat-send {
    font-family: var(--font-mono);
    font-size: 1.125rem;
    padding: 0.625rem 1rem;
    background: var(--white);
    color: var(--black);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.chat-send:hover {
    background: var(--gray-100);
}

.chat-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ================================================
   RESPONSIVE
   ================================================ */

@media (max-width: 1024px) {
    .slide-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .slide-info {
        max-width: none;
    }

    .product-specs {
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }

    .product-cta {
        display: flex;
        justify-content: center;
    }

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

    .footer-brand {
        grid-column: span 3;
    }
}

@media (max-width: 768px) {
    .nav {
        padding: 1rem 1.5rem;
    }

    .nav-products {
        display: none;
    }

    .product-slide {
        padding: 4rem 1.5rem;
    }

    .slide-info h1 {
        font-size: 2.5rem;
    }

    .knobs {
        justify-content: center;
    }

    .download-section {
        padding: 4rem 1.5rem;
    }

    .btn-download {
        min-width: 100%;
        justify-content: center;
    }

    .policy-section {
        padding: 6rem 1.5rem 3rem;
    }

    .policy-content h1 {
        font-size: 2.5rem;
    }

    /* Help page responsive */
    .help-page {
        flex-direction: column;
        padding-top: 0;
    }

    .help-sidebar {
        width: 100%;
        position: static;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--gray-800);
    }

    .help-nav {
        padding: 1.5rem;
    }

    .help-nav-toggle {
        display: block;
    }

    .help-nav-content {
        display: none;
    }

    .help-nav-content.active {
        display: block;
    }

    .help-content {
        padding: 2rem 1.5rem 4rem;
    }

    .help-header {
        margin-bottom: 3rem;
    }

    .help-section {
        margin-bottom: 3rem;
    }

    .help-contact-methods {
        flex-direction: column;
    }

    /* Checkout responsive */
    .checkout-page {
        padding: 4rem 1.5rem 3rem;
    }

    .checkout-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .checkout-sidebar {
        position: static;
        order: -1;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-minimal-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .footer {
        padding: 2.5rem 1.5rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-brand {
        grid-column: auto;
    }
}

@media (max-width: 480px) {
    .tagline {
        font-size: 1.75rem;
    }

    .synth-mockup {
        max-width: 100%;
    }

    .screen-content {
        padding: 1.5rem;
    }

    .knob {
        width: 40px;
        height: 40px;
    }

    .chat-widget {
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
    }

    .chat-toggle {
        width: 50px;
        height: 50px;
    }

    .chat-icon {
        font-size: 1.25rem;
    }

    .chat-window {
        width: 100%;
        left: 0;
        right: 0;
        bottom: 70px;
    }
}