/* PROMOFA.COM — Professional Minimalist Tech
   Blue carries structure (headings, navigation, accents).
   Coral is reserved for the call to action and interaction states. */

:root {
    --primary-blue: #004A99;
    --primary-orange: #FF6F61;

    --ink: #152238;          /* body text; also the label colour on coral (5.9:1) */
    --muted: #556377;
    --line: #DDE3EC;
    --field-border: #B9C4D3;
    --bg: #FFFFFF;
    --bg-alt: #F5F7FA;
    --error: #B42318;

    --radius: 4px;
    --header-h: 4.5rem;
    --font: 'Manrope', 'Public Sans', 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

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

@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, ul {
    margin: 0;
}

ul {
    padding: 0;
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1120px;
    margin: 0 auto;
    padding-inline: clamp(1.25rem, 4vw, 2rem);
}

/* Anchored targets clear the sticky header */
#top,
#about,
#asset-specs,
#inquiry {
    scroll-margin-top: var(--header-h);
}

/* ---------- Header ---------- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
}

.header-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem 1.5rem;
    min-height: var(--header-h);
}

.brand {
    font-size: 1.625rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.03em;
    color: var(--primary-blue);
    text-decoration: none;
}

.brand-tld {
    font-weight: 300;
    letter-spacing: -0.02em;
}

.site-header nav ul {
    display: flex;
    gap: 2rem;
}

.site-header nav a {
    display: inline-block;
    padding: 0.25rem 0;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--primary-blue);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: border-color 0.15s ease;
}

.site-header nav a:hover {
    border-bottom-color: var(--primary-orange);
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid var(--primary-blue);
    outline-offset: 3px;
    border-radius: var(--radius);
}

/* ---------- Headings ---------- */

h1,
h2,
h3 {
    color: var(--primary-blue);
}

h3 {
    font-size: clamp(1.75rem, 3.6vw, 2.5rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

/* ---------- Hero ---------- */

.hero {
    padding-block: clamp(4rem, 11vw, 8.5rem);
    background: var(--bg);
}

.hero h1 {
    font-size: clamp(2rem, 10.4vw, 8rem);
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.03em;
}

.hero h1 .tld {
    font-weight: 300;
    letter-spacing: -0.02em;
}

.hero h2 {
    margin-top: clamp(1.25rem, 3vw, 2rem);
    font-size: clamp(1.25rem, 3vw, 1.875rem);
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: -0.01em;
}

.hero-sub {
    margin-top: 0.75rem;
    font-size: clamp(1.0625rem, 2vw, 1.25rem);
    color: var(--muted);
}

.hero .btn {
    margin-top: clamp(2rem, 5vw, 3rem);
}

/* ---------- Buttons ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 1.75rem;
    font: inherit;
    font-size: 1.0625rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--ink);
    text-decoration: none;
    background: var(--primary-orange);
    border: 0;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.btn:hover {
    background: var(--primary-blue);
    color: #fff;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn:disabled:hover {
    background: var(--primary-orange);
    color: var(--ink);
}

.btn-block {
    width: 100%;
}

/* ---------- Sections ---------- */

.section {
    padding-block: clamp(3.5rem, 8vw, 6rem);
    background: var(--bg);
}

.section-alt {
    background: var(--bg-alt);
}

.section h3 {
    margin-bottom: clamp(2rem, 4vw, 3rem);
}

/* Ideal industries: plain list, one hairline per item */

.industries {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: 2.5rem;
}

.industries li {
    position: relative;
    padding: 1.25rem 0 1.25rem 1.5rem;
    font-size: 1.1875rem;
    font-weight: 600;
    line-height: 1.35;
    border-top: 1px solid var(--line);
}

.industries li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 1.75rem;
    width: 0.5rem;
    height: 0.5rem;
    background: var(--primary-blue);
}

/* Core asset advantages: spec-sheet rows */

.advantages li {
    display: grid;
    grid-template-columns: 2.5rem minmax(0, 19rem) minmax(0, 1fr);
    grid-template-areas: 'icon title text';
    column-gap: 1.5rem;
    align-items: baseline;
    padding-block: 1.75rem;
    border-top: 1px solid var(--line);
}

.advantages li:last-child {
    border-bottom: 1px solid var(--line);
}

.adv-icon {
    grid-area: icon;
    font-size: 1.5rem;
    line-height: 1;
}

.adv-title {
    grid-area: title;
    font-size: 1.1875rem;
    font-weight: 700;
    line-height: 1.35;
    color: var(--primary-blue);
}

.adv-text {
    grid-area: text;
    max-width: 38rem;
    font-size: 1.0625rem;
    color: var(--muted);
}

/* ---------- Inquiry ---------- */

.inquiry-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 28rem);
    column-gap: clamp(2.5rem, 7vw, 6rem);
    align-items: start;
}

.inquiry-copy h3 {
    margin-bottom: 1.25rem;
}

.inquiry-copy p {
    max-width: 32rem;
    font-size: 1.125rem;
    color: var(--muted);
}

.inquiry-form {
    display: grid;
    gap: 1.25rem;
}

.field {
    display: grid;
    gap: 0.4rem;
}

.field label {
    font-size: 0.9375rem;
    font-weight: 600;
}

.field input,
.field select {
    width: 100%;
    min-height: 3rem;
    padding: 0.7rem 0.9rem;
    font: inherit;
    font-size: 1rem;
    color: var(--ink);
    background: #fff;
    border: 1px solid var(--field-border);
    border-radius: var(--radius);
    transition: border-color 0.15s ease;
}

.field input:hover,
.field select:hover {
    border-color: var(--primary-orange);
}

.field input:focus-visible,
.field select:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 1px;
    border-color: var(--primary-blue);
}

.field select {
    appearance: none;
    -webkit-appearance: none;
    padding-right: 2.5rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' fill='none' stroke='%23004A99' stroke-width='2'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}

.form-status {
    min-height: 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.form-status[data-state="error"] {
    color: var(--error);
}

.form-status a {
    color: inherit;
    text-underline-offset: 2px;
}

/* ---------- Footer ---------- */

.site-footer {
    padding-block: 2rem;
    background: var(--bg);
    border-top: 1px solid var(--line);
    font-size: 0.875rem;
    color: var(--muted);
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
    .industries {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .inquiry-grid {
        grid-template-columns: minmax(0, 1fr);
        row-gap: 2.5rem;
    }

    .inquiry-form {
        max-width: 30rem;
    }
}

@media (max-width: 720px) {
    .advantages li {
        grid-template-columns: 2.25rem minmax(0, 1fr);
        grid-template-areas:
            'icon title'
            'icon text';
        row-gap: 0.35rem;
    }
}

@media (max-width: 560px) {
        .brand {
        font-size: 1.375rem;
    }

    .header-inner {
        min-height: 3.75rem;
        padding-block: 0.5rem;
    }

    #top,
    #about,
    #asset-specs,
    #inquiry {
        scroll-margin-top: 3.75rem;
    }

    .site-header nav ul {
        gap: 1.25rem;
    }

    .site-header nav a {
        font-size: 0.875rem;
    }

    .industries {
        grid-template-columns: minmax(0, 1fr);
    }

    .hero .btn {
        width: 100%;
        padding-inline: 1.25rem;
        font-size: 1rem;
    }
}

/* Header stacks on very narrow screens; let it scroll away instead of taking two rows of viewport */
@media (max-width: 420px) {
    .site-header {
        position: static;
    }

    #top,
    #about,
    #asset-specs,
    #inquiry {
        scroll-margin-top: 1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
    }
}