/* Melvio landing redesign · audit-led B2B consulting · dark graphite system */
:root {
    --color-bg: #090d10;
    --color-bg-soft: #0d1418;
    --color-surface: #111a1f;
    --color-surface-raised: #142129;
    --color-line: #28404a;
    --color-line-soft: rgba(184, 210, 218, 0.16);
    --color-text: #edf5f6;
    --color-muted: #9fb1b6;
    --color-dim: #6f8389;
    --color-accent: #2eaac4;
    --color-accent-strong: #51c5dd;
    --color-accent-ink: #071015;
    --color-warm: #d9a441;
    --color-error: #d66d5f;
    --color-success: #6cc896;

    --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;

    --container: 1180px;
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;

    --dur-fast: 140ms;
    --dur-base: 220ms;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: clip;
}

body {
    margin: 0;
    background:
        linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px),
        linear-gradient(180deg, rgba(255,255,255,0.018) 1px, transparent 1px),
        var(--color-bg);
    background-size: 96px 96px;
    color: var(--color-text);
    font-family: var(--font-sans);
    line-height: 1.55;
    overflow-x: clip;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background:
        linear-gradient(90deg, var(--color-bg) 0%, transparent 18%, transparent 82%, var(--color-bg) 100%),
        linear-gradient(180deg, rgba(46, 170, 196, 0.08), transparent 24rem);
    z-index: -1;
}

img,
svg {
    display: block;
}

svg {
    fill: none;
    stroke: currentColor;
    stroke-width: 1.75;
    stroke-linecap: round;
    stroke-linejoin: round;
}

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

button,
input,
select,
textarea {
    font: inherit;
}

button {
    cursor: pointer;
}

:focus-visible {
    outline: 2px solid var(--color-accent-strong);
    outline-offset: 4px;
}

#audit,
#areas,
#privacy,
#contact {
    scroll-margin-top: 96px;
}

.container {
    width: min(100% - 48px, var(--container));
    margin-inline: auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(9, 13, 16, 0.88);
    border-bottom: 1px solid var(--color-line-soft);
    backdrop-filter: blur(16px);
}

.header-inner {
    min-height: 76px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: var(--space-6);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    width: max-content;
    font-size: 1.35rem;
    font-weight: 700;
}

.brand-mark {
    width: 11px;
    height: 11px;
    border: 1px solid var(--color-accent-strong);
    background: var(--color-accent);
    transform: rotate(45deg);
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-10);
    color: var(--color-muted);
    font-size: 0.92rem;
}

.main-nav a,
.footer-links a {
    transition: color var(--dur-fast) var(--ease-out);
    white-space: nowrap;
}

.main-nav a:hover,
.footer-links a:hover {
    color: var(--color-text);
}

.header-cta {
    justify-self: end;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 var(--space-5);
    border: 1px solid rgba(81, 197, 221, 0.45);
    border-radius: var(--radius-sm);
    background: rgba(46, 170, 196, 0.16);
    color: var(--color-text);
    font-size: 0.92rem;
    font-weight: 650;
    transition: background-color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
    white-space: nowrap;
}

.header-cta:hover {
    background: rgba(46, 170, 196, 0.24);
    border-color: var(--color-accent-strong);
}

.hero {
    padding: var(--space-6) 0 0;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.82fr) minmax(480px, 1fr);
    gap: var(--space-16);
    align-items: center;
}

.hero-copy {
    padding-top: var(--space-8);
}

.hero h1 {
    margin: 0;
    max-width: 690px;
    font-size: 3.55rem;
    line-height: 1.04;
    font-weight: 760;
}

.hero-lede {
    max-width: 590px;
    margin: var(--space-6) 0 0;
    color: var(--color-muted);
    font-size: 1.12rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-top: var(--space-8);
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    min-height: 48px;
    padding: 0 var(--space-5);
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    font-weight: 700;
    font-size: 0.95rem;
    transition:
        background-color var(--dur-fast) var(--ease-out),
        border-color var(--dur-fast) var(--ease-out),
        color var(--dur-fast) var(--ease-out),
        transform var(--dur-fast) var(--ease-out);
    white-space: nowrap;
}

.button svg {
    width: 1.1rem;
    height: 1.1rem;
}

.button:hover {
    transform: translateY(-1px);
}

.button-primary {
    background: var(--color-accent);
    color: var(--color-accent-ink);
}

.button-primary:hover {
    background: var(--color-accent-strong);
}

.button-secondary {
    border-color: var(--color-line);
    background: rgba(17, 26, 31, 0.72);
    color: var(--color-text);
}

.button-secondary:hover {
    border-color: var(--color-accent);
}

.button:disabled {
    cursor: not-allowed;
    opacity: 0.65;
    transform: none;
}

.hero-assurances {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    margin: var(--space-10) 0 0;
}

.hero-assurances div {
    padding: 0 var(--space-5);
    border-left: 1px solid var(--color-line-soft);
}

.hero-assurances div:first-child {
    padding-left: 0;
    border-left: 0;
}

.hero-assurances dt {
    color: var(--color-text);
    font-size: 0.84rem;
    font-weight: 750;
}

.hero-assurances dd {
    margin: var(--space-1) 0 0;
    color: var(--color-muted);
    font-size: 0.78rem;
    line-height: 1.35;
}

.audit-panel {
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: rgba(13, 20, 24, 0.86);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.04);
    overflow: hidden;
}

.panel-topline {
    min-height: 58px;
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: 0 var(--space-5);
    border-bottom: 1px solid var(--color-line-soft);
}

.panel-topline strong {
    font-size: 0.92rem;
}

.panel-status {
    margin-left: auto;
    color: var(--color-dim);
    font-family: var(--font-mono);
    font-size: 0.72rem;
}

.panel-menu,
.panel-menu::before,
.panel-menu::after {
    width: 16px;
    height: 1px;
    display: block;
    background: var(--color-muted);
}

.panel-menu {
    position: relative;
}

.panel-menu::before,
.panel-menu::after {
    content: "";
    position: absolute;
    left: 0;
}

.panel-menu::before {
    top: -5px;
}

.panel-menu::after {
    top: 5px;
}

.audit-workspace {
    display: grid;
    grid-template-columns: 132px minmax(0, 1fr);
    min-height: 470px;
}

.audit-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-6) var(--space-4);
    border-right: 1px solid var(--color-line-soft);
    color: var(--color-dim);
    font-size: 0.78rem;
}

.audit-nav span {
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-xs);
}

.audit-nav .active {
    color: var(--color-text);
    background: rgba(46, 170, 196, 0.14);
}

.audit-map {
    padding: var(--space-6);
}

.audit-map h2,
.audit-map h3 {
    margin: 0;
}

.audit-map h2 {
    font-size: 1.25rem;
}

.flow-diagram {
    display: grid;
    grid-template-columns: 1fr 130px 1fr;
    gap: var(--space-4);
    align-items: center;
    margin-top: var(--space-6);
}

.flow-stack {
    display: grid;
    gap: var(--space-3);
}

.flow-stack span {
    min-height: 44px;
    display: flex;
    align-items: center;
    padding: 0 var(--space-3);
    border: 1px solid var(--color-line-soft);
    border-radius: var(--radius-sm);
    color: var(--color-muted);
    font-size: 0.76rem;
}

.flow-core {
    display: grid;
    justify-items: center;
    gap: var(--space-3);
    text-align: center;
    color: var(--color-text);
}

.flow-core svg {
    width: 82px;
    height: 82px;
    padding: var(--space-4);
    border: 1px solid var(--color-line);
    border-radius: 999px;
    color: var(--color-accent-strong);
}

.flow-core strong {
    max-width: 120px;
    font-size: 0.72rem;
    line-height: 1.25;
}

.checks {
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-line-soft);
}

.checks h3 {
    font-size: 0.88rem;
    color: var(--color-muted);
}

.checks ul {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3) var(--space-6);
    padding: 0;
    margin: var(--space-4) 0 0;
    list-style: none;
}

.checks li {
    position: relative;
    padding-left: var(--space-6);
    color: var(--color-muted);
    font-size: 0.84rem;
}

.checks li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.25rem;
    width: 0.85rem;
    height: 0.85rem;
    border: 1px solid var(--color-accent);
    border-radius: 999px;
}

.audit-section,
.areas-section,
.privacy-contact {
    padding: var(--space-20) 0;
    border-top: 1px solid var(--color-line-soft);
}

.section-heading {
    display: grid;
    grid-template-columns: minmax(0, 0.76fr) minmax(280px, 0.52fr);
    gap: var(--space-12);
    align-items: end;
    margin-bottom: var(--space-10);
}

.section-heading.compact {
    margin-bottom: var(--space-8);
}

.section-heading.align-left {
    display: block;
    margin-bottom: var(--space-10);
}

.section-heading h2 {
    margin: 0;
    font-size: 2.35rem;
    line-height: 1.12;
}

.section-heading p {
    margin: 0;
    color: var(--color-muted);
    font-size: 1rem;
}

.process-list {
    display: grid;
    gap: var(--space-3);
}

.process-row {
    display: grid;
    grid-template-columns: 64px 210px minmax(0, 1fr) 220px;
    gap: var(--space-6);
    align-items: center;
    min-height: 116px;
    padding: var(--space-5);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: rgba(17, 26, 31, 0.6);
}

.row-number {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border: 1px solid rgba(81, 197, 221, 0.55);
    border-radius: var(--radius-sm);
    background: rgba(46, 170, 196, 0.16);
    color: var(--color-accent-strong);
    font-family: var(--font-mono);
    font-weight: 800;
}

.row-title {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.row-title svg {
    width: 34px;
    height: 34px;
    color: var(--color-muted);
}

.row-title h3,
.service-lane h3,
.privacy-list h3,
.contact-panel h2 {
    margin: 0;
}

.row-title h3 {
    font-size: 1.05rem;
}

.process-row ul {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-4);
    padding: 0;
    margin: 0;
    list-style: none;
}

.process-row li {
    color: var(--color-muted);
    font-size: 0.86rem;
}

.process-row p {
    margin: 0;
    color: var(--color-muted);
    font-size: 0.82rem;
}

.service-lanes {
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: rgba(17, 26, 31, 0.6);
}

.service-lane {
    display: grid;
    grid-template-columns: 72px minmax(180px, 0.45fr) minmax(0, 1fr) 32px;
    gap: var(--space-6);
    align-items: center;
    min-height: 104px;
    padding: var(--space-5) var(--space-6);
    border-top: 1px solid var(--color-line-soft);
    transition: background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.service-lane:first-child {
    border-top: 0;
}

.service-lane.featured {
    background: rgba(46, 170, 196, 0.11);
    box-shadow: inset 4px 0 0 var(--color-accent);
}

.service-lane:hover {
    background: rgba(46, 170, 196, 0.16);
}

.service-lane svg {
    width: 42px;
    height: 42px;
    color: var(--color-accent-strong);
}

.service-lane h3 {
    font-size: 1.12rem;
}

.service-lane p {
    margin: 0;
    color: var(--color-muted);
    font-size: 0.95rem;
}

.service-lane span {
    color: var(--color-muted);
    font-size: 1.45rem;
}

.privacy-contact {
    background: linear-gradient(90deg, rgba(217, 164, 65, 0.035), transparent 36rem);
}

.privacy-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.82fr) minmax(420px, 1fr);
    gap: var(--space-16);
    align-items: start;
}

.privacy-list {
    display: grid;
    gap: var(--space-8);
}

.privacy-list article {
    display: grid;
    grid-template-columns: 48px minmax(0, 1fr);
    gap: var(--space-5);
}

.privacy-list svg {
    width: 42px;
    height: 42px;
    color: var(--color-warm);
}

.privacy-list h3 {
    font-size: 1rem;
}

.privacy-list p {
    margin: var(--space-1) 0 0;
    color: var(--color-muted);
    font-size: 0.9rem;
}

.contact-panel {
    padding: var(--space-8);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    background: rgba(17, 26, 31, 0.72);
}

.contact-panel h2 {
    margin-bottom: var(--space-8);
    font-size: 2rem;
    line-height: 1.14;
}

.field {
    display: grid;
    gap: var(--space-2);
    margin-bottom: var(--space-5);
}

.field label {
    color: var(--color-text);
    font-size: 0.88rem;
    font-weight: 700;
}

.field input,
.field select,
.field textarea {
    width: 100%;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    background: var(--color-bg-soft);
    color: var(--color-text);
    padding: 0.82rem 0.95rem;
    font-size: 0.94rem;
    transition: border-color var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out);
}

.field textarea {
    resize: vertical;
    min-height: 132px;
}

.field input::placeholder,
.field textarea::placeholder {
    color: var(--color-dim);
}

.field input:focus,
.field select:focus,
.field textarea:focus {
    border-color: var(--color-accent-strong);
    background: #0b1216;
}

.form-notice {
    display: grid;
    grid-template-columns: 36px minmax(0, 1fr);
    gap: var(--space-4);
    align-items: center;
    margin: var(--space-6) 0 var(--space-5);
    padding: var(--space-4);
    border: 1px solid rgba(217, 164, 65, 0.55);
    border-radius: var(--radius-sm);
    background: rgba(217, 164, 65, 0.08);
    color: var(--color-warm);
}

.form-notice svg {
    width: 32px;
    height: 32px;
}

.form-notice p {
    margin: 0;
    color: var(--color-text);
    font-size: 0.88rem;
}

.form-notice[data-type="success"] {
    border-color: rgba(108, 200, 150, 0.55);
    background: rgba(108, 200, 150, 0.08);
    color: var(--color-success);
}

.form-notice[data-type="error"] {
    border-color: rgba(214, 109, 95, 0.58);
    background: rgba(214, 109, 95, 0.08);
    color: var(--color-error);
}

.form-submit {
    width: 100%;
    min-height: 56px;
    font-size: 1rem;
}

.site-footer {
    border-top: 1px solid var(--color-line-soft);
    padding: var(--space-8) 0;
    color: var(--color-dim);
    background: #070a0d;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-6);
}

.footer-inner p {
    margin: 0;
    font-size: 0.86rem;
}

.footer-links {
    display: flex;
    gap: var(--space-6);
    color: var(--color-muted);
    font-size: 0.86rem;
}

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

@media (max-width: 1040px) {
    .header-inner {
        grid-template-columns: 1fr;
        justify-items: center;
        padding: var(--space-4) 0;
        gap: var(--space-4);
    }

    .header-cta {
        justify-self: center;
    }

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

    .hero {
        padding-top: var(--space-10);
    }

    .audit-panel {
        display: none;
    }

    .hero-copy {
        padding-top: 0;
    }

    .hero h1 {
        font-size: 3.2rem;
    }

    .section-heading {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .process-row {
        grid-template-columns: 54px minmax(0, 1fr);
    }

    .process-row ul,
    .process-row p {
        grid-column: 2;
    }
}

@media (max-width: 760px) {
    .container {
        width: min(100% - 32px, var(--container));
    }

    #audit,
    #areas,
    #privacy,
    #contact {
        scroll-margin-top: 88px;
    }

    .header-inner {
        min-height: 64px;
        grid-template-columns: auto auto;
        justify-content: space-between;
        justify-items: stretch;
        padding: var(--space-3) 0;
        gap: var(--space-3);
    }

    .main-nav {
        display: none;
    }

    .header-cta {
        justify-self: end;
        min-height: 40px;
        padding-inline: var(--space-4);
    }

    .hero {
        padding: var(--space-4) 0 var(--space-3);
    }

    .hero h1 {
        font-size: 2.45rem;
        line-height: 1.08;
    }

    .hero-lede {
        margin-top: var(--space-4);
        font-size: 1rem;
    }

    .hero-actions,
    .button {
        width: 100%;
    }

    .hero-actions {
        gap: var(--space-3);
        margin-top: var(--space-5);
    }

    .button {
        min-height: 44px;
    }

    .hero-assurances {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-4) var(--space-3);
        margin-top: var(--space-6);
    }

    .hero-assurances div,
    .hero-assurances div:first-child {
        padding: 0;
        border-left: 0;
    }

    .audit-workspace {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .audit-nav {
        display: none;
    }

    .audit-map {
        padding: var(--space-5);
    }

    .flow-diagram {
        grid-template-columns: 1fr;
    }

    .checks ul,
    .process-row ul {
        grid-template-columns: 1fr;
    }

    .audit-section,
    .areas-section,
    .privacy-contact {
        padding: var(--space-16) 0;
    }

    .section-heading h2,
    .contact-panel h2 {
        font-size: 2rem;
    }

    .process-row {
        grid-template-columns: 42px minmax(0, 1fr);
        gap: var(--space-4);
        align-items: start;
    }

    .row-title {
        align-items: flex-start;
    }

    .row-title svg {
        width: 28px;
        height: 28px;
    }

    .service-lane {
        grid-template-columns: 44px minmax(0, 1fr) 24px;
        gap: var(--space-4);
        align-items: start;
    }

    .service-lane p {
        grid-column: 2 / 4;
    }

    .service-lane svg {
        width: 34px;
        height: 34px;
    }

    .contact-panel {
        padding: var(--space-5);
    }

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 430px) {
    .container {
        width: min(100% - 28px, var(--container));
    }

    .brand {
        font-size: 1.2rem;
    }

    .header-cta {
        width: auto;
        padding-inline: var(--space-3);
    }

    .hero h1 {
        font-size: 1.95rem;
    }

    .hero-lede {
        font-size: 0.96rem;
    }

    .hero-assurances {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-3);
    }

    .flow-stack span {
        min-height: 40px;
    }

    .section-heading h2,
    .contact-panel h2 {
        font-size: 1.75rem;
    }

    .service-lane {
        padding: var(--space-5);
    }

    .privacy-list article {
        grid-template-columns: 38px minmax(0, 1fr);
        gap: var(--space-4);
    }

    .privacy-list svg {
        width: 34px;
        height: 34px;
    }

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

    .footer-links {
        flex-wrap: wrap;
        gap: var(--space-4);
    }
}