/* ==========================================================
   Ferro & Vance — Design tokens
   Palette: blueprint navy / blueprint line / paper / charcoal / amber / concrete
   Type: Barlow Condensed (display) · Inter (body) · IBM Plex Mono (data/labels)
   Signature: architectural dimension-lines + blueprint grid
   ========================================================== */

:root {
    --navy: #14304A;
    --navy-2: #0E2437;
    --blue-line: #4C7FA8;
    --paper: #F1EDE4;
    --paper-2: #E8E2D4;
    --charcoal: #22262B;
    --amber: #F2A31C;
    --amber-dark: #C97F0C;
    --concrete: #8F8C82;

    --font-display: 'Barlow Condensed', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;

    --nav-h: 76px;
    --max-w: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--charcoal);
    background: var(--paper);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
    font-family: var(--font-display);
    font-weight: 800;
    line-height: 1.02;
    letter-spacing: 0.01em;
    margin: 0;
    text-transform: uppercase;
}

h2 {
    font-size: clamp(2rem, 4vw, 2.9rem);
}

h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

p {
    margin: 0 0 0.9em;
    color: var(--charcoal);
}

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

.mono {
    font-family: var(--font-mono);
    letter-spacing: 0.02em;
}

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

:focus-visible {
    outline: 2px solid var(--amber);
    outline-offset: 3px;
}

/* ---------- layout helpers ---------- */
.section {
    position: relative;
    padding: 6.5rem 1.5rem;
    max-width: var(--max-w);
    margin: 0 auto;
}

.section-dark {
    max-width: 100%;
    background: var(--navy);
    color: var(--paper);
}

.section-dark .section-head,
.section-dark .process-list,
.section-dark .testimonial-grid {
    max-width: var(--max-w);
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.section-dark h2,
.section-dark p {
    color: var(--paper);
}

.section-dark .eyebrow {
    color: var(--amber);
}

.section-head {
    max-width: 640px;
    margin-bottom: 3.2rem;
}

.eyebrow {
    font-size: 0.78rem;
    color: var(--amber-dark);
    margin-bottom: 0.9rem;
    font-weight: 500;
}

.section-lede {
    color: var(--concrete);
    font-size: 1.05rem;
}

.section-dark .section-lede {
    color: #C7D2DC;
}

.btn {
    position: relative;
    display: inline-block;
    padding: 0.9rem 1.7rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    letter-spacing: 0.04em;
    border: 1.5px solid transparent;
    cursor: pointer;
    overflow: hidden;
    isolation: isolate;
    transition: transform 0.25s cubic-bezier(.2, .8, .2, 1), box-shadow 0.25s ease, background 0.2s ease, color 0.2s ease;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    background: linear-gradient(115deg, transparent 20%, rgba(255, 255, 255, 0.35) 40%, transparent 60%);
    transform: translateX(-120%);
    transition: transform 0.55s ease;
}

.btn:hover::before {
    transform: translateX(120%);
}

.btn:active {
    transform: translateY(0) scale(0.97);
}

.btn-amber {
    background: var(--amber);
    color: var(--navy-2);
    border-color: var(--amber);
}

.btn-amber:hover {
    background: var(--amber-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 22px rgba(201, 127, 12, 0.32);
}

.btn-outline {
    border-color: currentColor;
    color: inherit;
    background: transparent;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(20, 48, 74, 0.12);
}

.hero .btn-outline:hover {
    background: rgba(20, 48, 74, 0.06);
}

.inline-link {
    color: var(--amber-dark);
    text-decoration: none;
    background-image: linear-gradient(var(--amber-dark), var(--amber-dark));
    background-size: 0% 1.5px;
    background-repeat: no-repeat;
    background-position: left bottom;
    transition: background-size 0.25s ease;
    padding-bottom: 1px;
}

.inline-link:hover {
    background-size: 100% 1.5px;
}

/* ==========================================================
   NAV
   ========================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(241, 237, 228, 0.92);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--paper-2);
    transition: box-shadow 0.2s ease;
}

.site-header.scrolled {
    box-shadow: 0 4px 18px rgba(20, 48, 74, 0.08);
}

.nav-wrap {
    max-width: var(--max-w);
    margin: 0 auto;
    height: var(--nav-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    color: var(--navy);
}

.brand-mark {
    color: var(--amber-dark);
    flex-shrink: 0;
}

.brand-text {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.15rem;
    letter-spacing: 0.03em;
}

.main-nav ul {
    display: flex;
    gap: 2.1rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.03em;
    color: var(--charcoal);
    position: relative;
    padding-bottom: 4px;
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--amber-dark);
    transition: width 0.28s cubic-bezier(.2, .8, .2, 1);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: var(--amber-dark);
}

.brand-mark {
    transition: transform 0.4s ease;
}

.brand:hover .brand-mark {
    transform: rotate(90deg);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.nav-cta {
    padding: 0.6rem 1.2rem;
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 34px;
    height: 34px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.hamburger span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--navy);
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.hamburger[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.hamburger[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
    display: none;
    max-height: 0;
    overflow: hidden;
    background: var(--paper);
    border-bottom: 1px solid var(--paper-2);
    transition: max-height 0.3s ease;
}

.mobile-nav.open {
    max-height: 420px;
}

.mobile-nav ul {
    list-style: none;
    margin: 0;
    padding: 1rem 1.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
}

.mobile-nav .nav-link {
    font-size: 0.95rem;
}

@media (max-width: 860px) {
    .main-nav {
        display: none;
    }

    .nav-cta {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .mobile-nav {
        display: block;
    }
}

/* ==========================================================
   HERO
   ========================================================== */
.hero {
    position: relative;
    padding-top: calc(var(--nav-h) + 4.5rem);
    padding-bottom: 3rem;
    overflow: hidden;
    background: var(--paper);
}

.blueprint-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--blue-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--blue-line) 1px, transparent 1px);
    background-size: 44px 44px;
    opacity: 0.08;
    pointer-events: none;
}

.section-dark .blueprint-grid {
    opacity: 0.14;
}

.blueprint-grid--dense {
    background-size: 28px 28px;
}

.hero-inner {
    position: relative;
    z-index: 1;
    max-width: 780px;
    margin: 0 auto;
    padding: 0 1.5rem;
    text-align: center;
}

.hero-title {
    font-size: clamp(2.6rem, 7vw, 4.6rem);
    color: var(--navy);
}

.dim-underline {
    position: relative;
    display: inline-block;
    color: var(--amber-dark);
}

.dim-svg {
    position: absolute;
    left: 0;
    right: 0;
    bottom: -0.22em;
    width: 100%;
    height: 12px;
    stroke: var(--amber-dark);
    stroke-width: 1.5;
    overflow: visible;
}

.hero-sub {
    font-size: 1.12rem;
    color: #3E4550;
    max-width: 560px;
    margin: 1.5rem auto 2.2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-specs {
    position: relative;
    z-index: 1;
    max-width: var(--max-w);
    margin: 5rem auto 0;
    padding: 1.6rem 1.5rem 0;
    border-top: 1px solid rgba(20, 48, 74, 0.15);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.spec {
    text-align: center;
}

.spec-label {
    display: block;
    font-size: 0.68rem;
    color: var(--concrete);
    margin-bottom: 0.4rem;
}

.spec-value {
    display: block;
    font-size: 1.6rem;
    color: var(--navy);
    font-weight: 500;
}

@media (max-width: 640px) {
    .hero-specs {
        grid-template-columns: repeat(2, 1fr);
        row-gap: 2rem;
    }
}

/* ==========================================================
   SERVICES
   ========================================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5px;
    background: var(--paper-2);
    border: 1.5px solid var(--paper-2);
}

.service-card {
    background: var(--paper);
    padding: 2.2rem 1.8rem;
    transition: background 0.2s ease;
}

.service-card:hover {
    background: #fff;
}

.service-icon {
    color: var(--amber-dark);
    margin-bottom: 1.1rem;
    width: 34px;
    height: 34px;
}

.service-card p {
    color: var(--concrete);
    font-size: 0.95rem;
}

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

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

/* ==========================================================
   PROCESS
   ========================================================== */
.process-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.process-step {
    border-top: 2px solid var(--blue-line);
    padding-top: 1.2rem;
}

.step-num {
    display: block;
    color: var(--amber);
    font-size: 0.95rem;
    margin-bottom: 0.8rem;
}

.process-step h3 {
    color: var(--paper);
}

.process-step p {
    color: #B9C4CE;
    font-size: 0.93rem;
}

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

@media (max-width: 560px) {
    .process-list {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================
   PROJECTS
   ========================================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.project-card {
    background: #fff;
    border: 1px solid var(--paper-2);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.project-card:hover {
    box-shadow: 0 18px 34px rgba(20, 48, 74, 0.14);
    transform: translateY(-4px);
}

.project-thumb {
    aspect-ratio: 16 / 10;
    position: relative;
    overflow: hidden;
    background: var(--paper-2);
}

.project-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s cubic-bezier(.2, .8, .2, 1);
}

.project-card:hover .project-thumb img {
    transform: scale(1.06);
}

.project-body {
    padding: 1.5rem 1.7rem 1.8rem;
}

.project-tag {
    color: var(--amber-dark);
    font-size: 0.75rem;
    margin-bottom: 0.5rem;
}

.project-body p:last-child {
    color: var(--concrete);
    font-size: 0.95rem;
    margin-bottom: 0;
}

@media (max-width: 700px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================
   ABOUT / SPLIT
   ========================================================== */
.section-split {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 4rem;
    align-items: center;
}

.checklist {
    list-style: none;
    margin: 1.6rem 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
}

.checklist li {
    position: relative;
    padding-left: 1.5rem;
    color: var(--charcoal);
    font-size: 0.98rem;
}

.checklist li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 8px;
    height: 8px;
    background: var(--amber);
}

.split-visual {
    display: flex;
    justify-content: center;
}

.split-card {
    background: var(--navy);
    color: var(--paper);
    padding: 2.2rem;
    width: 100%;
    max-width: 340px;
    border: 1px solid var(--blue-line);
}

.split-card-label {
    color: var(--amber);
    font-size: 0.72rem;
    margin-bottom: 1.4rem;
}

.split-card dl {
    margin: 0;
}

.split-card dl>div {
    display: flex;
    justify-content: space-between;
    padding: 0.55rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 0.85rem;
}

.split-card dl>div:last-child {
    border-bottom: none;
}

.split-card dt {
    color: #9FB2C2;
}

.split-card dd {
    margin: 0;
    color: var(--paper);
}

@media (max-width: 860px) {
    .section-split {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

/* ==========================================================
   TESTIMONIALS
   ========================================================== */
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.testimonial {
    margin: 0;
    padding: 1.8rem;
    border-left: 2px solid var(--amber);
    background: rgba(255, 255, 255, 0.04);
}

.testimonial p {
    color: var(--paper);
    font-size: 1rem;
    font-style: italic;
}

.testimonial cite {
    display: block;
    margin-top: 1rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-style: normal;
    color: #9FB2C2;
}

@media (max-width: 860px) {
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================
   CONTACT
   ========================================================== */
.contact-wrap {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 4rem;
}

.contact-details {
    margin-top: 1.8rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--navy);
}

.contact-form {
    background: #fff;
    border: 1px solid var(--paper-2);
    padding: 2.2rem;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-row label {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.03em;
    color: var(--concrete);
    text-transform: uppercase;
}

.form-row input,
.form-row select,
.form-row textarea {
    font-family: var(--font-body);
    font-size: 0.98rem;
    padding: 0.75rem 0.85rem;
    border: 1.5px solid var(--paper-2);
    background: var(--paper);
    color: var(--charcoal);
    resize: vertical;
}

.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus {
    outline: none;
    border-color: var(--amber-dark);
}

.form-submit {
    align-self: flex-start;
    margin-top: 0.4rem;
}

.form-note {
    min-height: 1.2em;
    color: var(--amber-dark);
    font-size: 0.8rem;
}

@media (max-width: 860px) {
    .contact-wrap {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

/* ==========================================================
   FOOTER
   ========================================================== */
.site-footer {
    background: var(--navy-2);
    color: #9FB2C2;
    padding: 2.6rem 1.5rem;
}

.footer-wrap {
    max-width: var(--max-w);
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.brand-footer {
    color: var(--paper);
}

.brand-footer .brand-mark {
    color: var(--amber);
}

.footer-nav {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-nav a {
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.footer-nav a:hover {
    color: var(--paper);
}

.footer-meta {
    font-size: 0.72rem;
    width: 100%;
    text-align: center;
    margin-top: 0.5rem;
    opacity: 0.75;
}

@media (min-width: 640px) {
    .footer-meta {
        width: auto;
        margin-top: 0;
        text-align: right;
    }
}

/* ==========================================================
   REVEAL ON SCROLL
   ========================================================== */
.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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