:root {
    /* Surfaces */
    --surface: #f9f9fc;
    --surface-container-low: #f3f3f6;
    --surface-container: #eeeef0;
    --surface-container-high: #e8e8ea;
    --surface-container-highest: #e2e2e5;
    --surface-container-lowest: #ffffff;

    /* Brand */
    --primary: #89cff0;
    --primary-dark: #008ddf;
    --primary-container: #89cff0;
    --on-primary: #001f2a;
    --on-surface: #1a1c1e;
    --on-surface-variant: #40484d;
    --outline-variant: #bfc8cd;
    --error: #ba1a1a;

    /* Typography */
    --font-headline: 'Manrope', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Elevation — Ambient Light */
    --shadow-ambient: 0 8px 40px rgba(26, 28, 30, 0.06);
    --shadow-lifted: 0 16px 48px rgba(26, 28, 30, 0.08);

    /* Spacing scale */
    --sp-1: 0.25rem;
    --sp-2: 0.5rem;
    --sp-3: 0.75rem;
    --sp-4: 1rem;
    --sp-6: 1.5rem;
    --sp-8: 2rem;
    --sp-10: 2.5rem;
    --sp-12: 3rem;
    --sp-16: 4rem;
    --sp-20: 5rem;
    --sp-24: 6rem;

    /* Radii */
    --radius-sm: 0.125rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.25rem;
}

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

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

body {
    font-family: var(--font-body);
    color: var(--on-surface);
    background: var(--surface);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

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

input,
textarea {
    font-family: inherit;
    outline: none;
    border: none;
}

/* =============================================
       GLASSMORPHISM NAV (sticky per DESIGN.md)
       ============================================= */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--primary-dark);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--sp-4) var(--sp-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo-img {
    height: 40px;
    width: auto;
    display: block;
}

.nav-logo {
    font-family: var(--font-headline);
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: -0.03em;
    color: #fff;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--sp-8);
}

.nav-links a {
    font-family: var(--font-headline);
    font-weight: 600;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.2s;
    letter-spacing: -0.01em;
}

.nav-links a:hover,
.nav-links a.active {
    color: #fff;
}

.nav-links a.active {
    position: relative;
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: #fff;
    border-radius: 1px;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--sp-4);
}

.btn-text {
    font-family: var(--font-headline);
    font-weight: 600;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.85);
    background: none;
    transition: color 0.2s;
}

.btn-text:hover {
    color: #fff;
}

.btn-primary {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--on-primary);
    background: var(--primary);
    padding: 0.65rem 1.4rem;
    border-radius: var(--radius-md);
    transition: transform 0.15s, filter 0.2s;
}

.btn-primary:hover {
    filter: brightness(1.1);
}

.btn-primary:active {
    transform: scale(0.97);
}

/* Mobile hamburger */
.nav-hamburger {
    display: none;
    background: none;
    width: 40px;
    height: 40px;
    position: relative;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.nav-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}

.nav-hamburger.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-hamburger.open span:nth-child(2) {
    opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(249, 249, 252, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--sp-6);
    z-index: 99;
    flex-direction: column;
    gap: var(--sp-4);
    animation: slideDown 0.3s ease;
}

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

.mobile-menu a {
    font-family: var(--font-headline);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--on-surface);
    padding: var(--sp-3) 0;
}

.mobile-menu .btn-primary {
    text-align: center;
    margin-top: var(--sp-2);
    padding: var(--sp-4);
    font-size: 1rem;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-12px);
    }

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

/* =============================================
       HERO
       ============================================= */
.hero {
    background: var(--surface-container-low);
    padding: 8rem var(--sp-6) var(--sp-16);
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-12);
    align-items: center;
    width: 100%;
}

.hero-content {
    z-index: 2;
}

.hero h1 {
    font-family: var(--font-headline);
    font-weight: 800;
    font-size: clamp(2.24rem, 4.4vw, 3.36rem);
    line-height: 1.08;
    letter-spacing: -0.025em;
    color: var(--on-surface);
    margin-bottom: var(--sp-6);
}

.hero h1 .highlight {
    color: var(--primary-dark);
}

.hero-checklist {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-3) var(--sp-6);
    margin-bottom: var(--sp-10);
    max-width: 480px;
}

.hero-checklist li {
    display: flex;
    align-items: center;
    gap: var(--sp-3);
}

.hero-checklist li svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: var(--primary-dark);
    background: rgba(0, 141, 223, 0.1);
    padding: 5px;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-md);
    box-sizing: content-box;
}

.hero-checklist li span {
    font-family: var(--font-headline);
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--on-surface);
}

.hero-actions {
    display: flex;
    gap: var(--sp-3);
    flex-wrap: wrap;
    max-width: 480px;
}

.btn-hero-primary {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 0.92rem;
    color: #fff;
    background: var(--primary-dark);
    padding: 0.7rem 1.4rem;
    border-radius: var(--radius-md);
    transition: transform 0.15s, filter 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 24px rgba(0, 141, 223, 0.2);
}

.btn-hero-primary:hover {
    filter: brightness(1.1);
    box-shadow: 0 6px 32px rgba(0, 141, 223, 0.3);
}

.btn-hero-primary:active {
    transform: scale(0.97);
}

.btn-hero-secondary {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 0.92rem;
    color: var(--on-surface);
    background: var(--surface-container-highest);
    padding: 0.7rem 1.4rem;
    border-radius: var(--radius-md);
    transition: background 0.2s, transform 0.15s;
}

.btn-hero-secondary:hover {
    background: var(--surface-container-high);
}

.btn-hero-secondary:active {
    transform: scale(0.97);
}

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

.hero-image-frame {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 5;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lifted);
    transform: translateX(2rem) rotate(1.5deg);
}

.hero-image-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Floating accent shape behind hero image */
.hero-image-wrapper::before {
    content: '';
    position: absolute;
    top: -30px;
    right: -20px;
    width: 200px;
    height: 200px;
    background: var(--primary);
    opacity: 0.15;
    border-radius: 50%;
    filter: blur(60px);
    z-index: -1;
}

/* =============================================
       SECTION — HOW IT WORKS
       ============================================= */
.how-it-works {
    background: var(--surface);
    padding: var(--sp-24) var(--sp-6);
}

.section-header {
    max-width: 1200px;
    margin: 0 auto var(--sp-16);
}

.section-header h2 {
    font-family: var(--font-headline);
    font-weight: 800;
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -0.02em;
    color: var(--on-surface);
    margin-bottom: var(--sp-3);
}

.section-header p {
    font-size: 1.15rem;
    color: var(--on-surface-variant);
}

.steps-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-6);
}

.step-card {
    background: var(--surface-container-low);
    padding: var(--sp-8);
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s, box-shadow 0.3s;
}

@media (hover: hover) {
    .step-card:hover {
        transform: translateY(-6px);
        box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
    }
}

.step-number {
    width: 48px;
    height: 48px;
    background: rgba(137, 207, 240, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--on-surface);
    margin-bottom: var(--sp-6);
    transition: background 0.3s, color 0.3s;
}

.step-card h3 {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 1.35rem;
    margin-bottom: var(--sp-3);
    letter-spacing: -0.01em;
}

.step-card p {
    color: var(--on-surface-variant);
    font-size: 0.95rem;
    line-height: 1.65;
}

.step-icon {
    margin-top: auto;
    padding-top: var(--sp-8);
    display: flex;
    justify-content: flex-end;
}

.step-icon svg {
    width: 28px;
    height: 28px;
    color: var(--primary);
    opacity: 0.5;
    transition: opacity 0.3s, color 0.3s;
}

@media (hover: hover) {
    .step-card:hover .step-icon svg {
        opacity: 1;
        color: #4fa8d5;
    }

    .step-card:hover .step-number {
        background: rgba(79, 168, 213, 0.25);
        color: #4fa8d5;
    }
}

/* =============================================
       SECTION — TRANSPARENCY WINS (Comparison)
       ============================================= */
.comparison {
    background: var(--surface-container-low);
    padding: var(--sp-24) var(--sp-6);
    overflow: hidden;
}

.comparison .section-header {
    text-align: center;
}

.comparison .section-header p {
    max-width: 540px;
    margin: 0 auto;
}

.comparison-grid {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-ambient);
}

.comparison-col {
    padding: var(--sp-12);
}

.comparison-col.traditional {
    background: var(--surface-container-lowest);
}

.comparison-col.sellmycar {
    background: rgba(137, 207, 240, 0.06);
    border-left: 4px solid var(--primary-dark);
}

.comparison-col h3 {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 1.4rem;
    margin-bottom: var(--sp-8);
    letter-spacing: -0.01em;
}

.comparison-col.traditional h3 {
    color: var(--outline-variant);
}

.comparison-col.sellmycar .col-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--sp-8);
}

.comparison-col.sellmycar .col-header h3 {
    margin-bottom: 0;
}

.badge {
    font-family: var(--font-headline);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: var(--primary-dark);
    color: #fff;
    padding: 0.3rem 0.75rem;
    border-radius: 100px;
}

.comparison-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--sp-6);
}

.comparison-item {
    display: flex;
    align-items: flex-start;
    gap: var(--sp-4);
}

.comparison-item .icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    margin-top: 2px;
}

.comparison-item .icon.negative {
    color: var(--error);
}

.comparison-item .icon.positive {
    color: var(--primary-dark);
}

.comparison-item strong {
    display: block;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.comparison-item span {
    font-size: 0.85rem;
    color: var(--on-surface-variant);
    line-height: 1.5;
}

/* =============================================
       SECTION — CONTACT FORM
       ============================================= */
.contact {
    background: var(--surface);
    padding: var(--sp-24) var(--sp-6);
}

.contact-card {
    max-width: 680px;
    margin: 0 auto;
    background: var(--surface-container-lowest);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lifted);
    padding: var(--sp-12) var(--sp-12);
    text-align: center;
}

.contact-card h2 {
    font-family: var(--font-headline);
    font-weight: 800;
    font-size: clamp(1.8rem, 3.5vw, 2.4rem);
    letter-spacing: -0.02em;
    margin-bottom: var(--sp-4);
}

.contact-card>p {
    color: var(--on-surface-variant);
    font-size: 1.05rem;
    margin-bottom: var(--sp-10);
    max-width: 440px;
    margin-left: auto;
    margin-right: auto;
}

.form {
    text-align: left;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-6);
    margin-bottom: var(--sp-6);
}

.form-group {
    margin-bottom: var(--sp-6);
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--on-surface-variant);
    margin-bottom: var(--sp-2);
    letter-spacing: 0.01em;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background: var(--surface-container-high);
    padding: var(--sp-4);
    border-radius: var(--radius-lg);
    font-size: 0.95rem;
    color: var(--on-surface);
    transition: background 0.2s, box-shadow 0.2s;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--outline-variant);
}

.form-group input:focus,
.form-group textarea:focus {
    background: var(--surface-container-lowest);
    box-shadow: 0 0 0 2px rgba(0, 141, 223, 0.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 90px;
}

.btn-submit {
    width: 100%;
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 1.05rem;
    color: #fff;
    background: var(--primary-dark);
    padding: 1.1rem;
    border-radius: var(--radius-md);
    transition: transform 0.15s, filter 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 24px rgba(0, 141, 223, 0.15);
}

.btn-submit:hover {
    filter: brightness(1.1);
    box-shadow: 0 6px 32px rgba(0, 141, 223, 0.25);
}

.btn-submit:active {
    transform: scale(0.98);
}

/* =============================================
       FOOTER
       ============================================= */
.footer {
    background: var(--surface-container-low);
    padding: var(--sp-12) var(--sp-6);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--sp-8);
}

.footer-logo-img {
    height: 32px;
    width: auto;
    display: block;
    opacity: 0.9;
}

.footer-brand {
    font-family: var(--font-headline);
    font-weight: 800;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
    margin-bottom: var(--sp-2);
}

.footer-copy {
    font-size: 0.8rem;
    color: var(--on-surface-variant);
    max-width: 280px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-6);
}

.footer-links a {
    font-size: 0.85rem;
    color: var(--on-surface-variant);
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--primary-dark);
}

.footer-social {
    display: flex;
    gap: var(--sp-3);
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--surface-container-lowest);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--on-surface);
    box-shadow: 0 2px 8px rgba(26, 28, 30, 0.04);
    transition: transform 0.2s, color 0.2s;
}

.footer-social a:hover {
    transform: scale(1.1);
    color: var(--primary-dark);
}

.footer-social a svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* =============================================
       ANIMATIONS — Scroll Reveal
       ============================================= */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 {
    transition-delay: 0.1s;
}

.reveal-delay-2 {
    transition-delay: 0.2s;
}

.reveal-delay-3 {
    transition-delay: 0.3s;
}

.reveal-delay-4 {
    transition-delay: 0.4s;
}

/* Hero entrance animations */
.hero-content {
    animation: heroFadeUp 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0.2s both;
}

.hero-image-frame {
    animation: heroImageIn 1s cubic-bezier(0.16, 1, 0.3, 1) 0.4s both;
}

@keyframes heroFadeUp {
    from {
        opacity: 0;
        transform: translateY(32px);
    }

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

@keyframes heroImageIn {
    from {
        opacity: 0;
        transform: translateX(4rem) rotate(3deg) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateX(2rem) rotate(1.5deg) scale(1);
    }
}

/* =============================================
       RESPONSIVE
       ============================================= */
@media (max-width: 900px) {
    .steps-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {

    .nav-links,
    .btn-text {
        display: none;
    }

    .nav-hamburger {
        display: flex;
    }

    .hero {
        padding: 7rem var(--sp-6) var(--sp-12);
        min-height: auto;
    }

    .hero-inner {
        grid-template-columns: 1fr;
        gap: var(--sp-8);
    }

    .hero h1 {
        font-size: 2.6rem;
    }

    .hero-image-frame {
        transform: none;
        animation: heroImageInMobile 0.8s cubic-bezier(0.16, 1, 0.3, 1) 0.3s both;
        aspect-ratio: 16 / 10;
    }

    @keyframes heroImageInMobile {
        from {
            opacity: 0;
            transform: translateY(20px) scale(0.97);
        }

        to {
            opacity: 1;
            transform: none;
        }
    }

    .hero-image-wrapper::before {
        display: none;
    }

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

    .comparison-col.sellmycar {
        border-left: none;
        border-top: 4px solid var(--primary-dark);
    }

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

    .contact-card {
        padding: var(--sp-8);
    }

    /* Add bottom padding so content isn't hidden under mobile CTA */
    .footer {
        padding-bottom: 6rem;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }

    .footer-copy {
        max-width: 100%;
    }
}

@media (max-width: 600px) {
    .steps-grid {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero-checklist {
        grid-template-columns: 1fr;
    }

    .hero-actions {
        flex-direction: column;
    }

    .btn-hero-primary,
    .btn-hero-secondary {
        width: 100%;
        text-align: center;
    }

    .comparison-col {
        padding: var(--sp-8);
    }
}