/* Arravia — Premium cinematic theme */

:root {
    --color-bg: #0a0a0a;
    --color-bg-elevated: #111111;
    --color-bg-soft: #161616;
    --color-text: #f5f5f4;
    --color-text-muted: rgba(245, 245, 244, 0.55);
    --color-gold: #c9a96e;
    --color-gold-dim: rgba(201, 169, 110, 0.35);
    --color-border: rgba(255, 255, 255, 0.08);
    --font-display: "Cormorant Garamond", "Playfair Display", Georgia, serif;
    --font-body: "Inter", system-ui, sans-serif;
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 3rem;
    --space-xl: 5rem;
    --space-2xl: 7rem;
    --container: min(90rem, calc(100% - 2.5rem));
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --nav-h: 5rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 1rem;
    line-height: 1.65;
    color: var(--color-text);
    background: var(--color-bg);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

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

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

button {
    font: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

.container {
    width: var(--container);
    margin-inline: auto;
}

.section-label {
    display: block;
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-gold);
    margin-bottom: var(--space-sm);
}

.display-title {
    font-family: var(--font-display);
    font-weight: 300;
    line-height: 1.08;
    letter-spacing: -0.02em;
    margin: 0;
}

.display-title--lg {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
}

.display-title--md {
    font-size: clamp(1.75rem, 3.5vw, 2.75rem);
}

.body-lg {
    font-size: clamp(1rem, 1.5vw, 1.125rem);
    color: var(--color-text-muted);
    max-width: 38rem;
}

/* ─── Buttons ─── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.95rem 1.75rem;
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    transition: opacity 0.35s var(--ease-out), transform 0.35s var(--ease-out), background 0.35s;
}

.btn--gold {
    background: var(--color-gold);
    color: #0a0a0a;
}

.btn--gold:hover {
    opacity: 0.88;
    transform: translateY(-1px);
}

.btn--outline {
    border: 1px solid var(--color-gold-dim);
    color: var(--color-gold);
}

.btn--outline:hover {
    background: rgba(201, 169, 110, 0.08);
    transform: translateY(-1px);
}

/* ─── Navigation ─── */
.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--nav-h);
    transition: background 0.5s var(--ease-out), backdrop-filter 0.5s, border-color 0.5s;
    border-bottom: 1px solid transparent;
}

.site-nav.is-scrolled {
    background: rgba(10, 10, 10, 0.82);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom-color: var(--color-border);
}

.site-nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.site-nav__logo img {
    height: 2.25rem;
    width: auto;
    mix-blend-mode: lighten;
}

@media (min-width: 768px) {
    .site-nav__logo img {
        height: 2.75rem;
    }
}

.site-nav__links {
    display: none;
    align-items: center;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .site-nav__links {
        display: flex;
    }
}

.site-nav__link {
    position: relative;
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text);
    padding-bottom: 0.25rem;
}

.site-nav__link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 1px;
    background: var(--color-gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--ease-out);
}

.site-nav__link:hover::after {
    transform: scaleX(1);
}

.site-nav__cta {
    display: none;
}

@media (min-width: 640px) {
    .site-nav__cta {
        display: inline-flex;
    }
}

.site-nav__toggle {
    display: flex;
    width: 2.75rem;
    height: 2.75rem;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
}

@media (min-width: 1024px) {
    .site-nav__toggle {
        display: none;
    }
}

.site-nav__toggle-icon {
    width: 1.25rem;
    height: 2px;
    background: var(--color-text);
    position: relative;
    transition: background 0.3s;
}

.site-nav__toggle-icon::before,
.site-nav__toggle-icon::after {
    content: "";
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    transition: transform 0.35s var(--ease-out), top 0.35s;
}

.site-nav__toggle-icon::before { top: -6px; }
.site-nav__toggle-icon::after  { top: 6px; }

.site-nav__toggle.is-open .site-nav__toggle-icon { background: transparent; }
.site-nav__toggle.is-open .site-nav__toggle-icon::before { top: 0; transform: rotate(45deg); }
.site-nav__toggle.is-open .site-nav__toggle-icon::after  { top: 0; transform: rotate(-45deg); }

/* ─── Mobile menu ─── */
.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 99;
    background: rgba(10, 10, 10, 0.97);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.45s, visibility 0.45s;
}

.mobile-menu.is-open {
    opacity: 1;
    visibility: visible;
}

.mobile-menu__link {
    font-family: var(--font-display);
    font-size: clamp(2rem, 8vw, 3.5rem);
    font-weight: 300;
    color: var(--color-text);
    opacity: 0;
    transform: translateY(1.5rem);
}

.mobile-menu.is-open .mobile-menu__link {
    animation: mobileLinkIn 0.6s var(--ease-out) forwards;
}

.mobile-menu.is-open .mobile-menu__link:nth-child(1) { animation-delay: 0.05s; }
.mobile-menu.is-open .mobile-menu__link:nth-child(2) { animation-delay: 0.10s; }
.mobile-menu.is-open .mobile-menu__link:nth-child(3) { animation-delay: 0.15s; }
.mobile-menu.is-open .mobile-menu__link:nth-child(4) { animation-delay: 0.20s; }
.mobile-menu.is-open .mobile-menu__link:nth-child(5) { animation-delay: 0.25s; }
.mobile-menu.is-open .mobile-menu__link:nth-child(6) { animation-delay: 0.30s; }

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

/* ─── Hero ─── */
.hero {
    position: relative;
    height: 100vh;
    min-height: 32rem;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
}

.hero__parallax {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero__layer {
    position: absolute;
    inset: 0;
    will-change: transform;
}

/* Background: deep dark gradient */
.hero__layer--bg {
    background: linear-gradient(160deg, #0d1117 0%, #0a0a0a 60%);
    z-index: 1;
}

/* Sky / clouds image layer */
.hero__layer--sky {
    z-index: 2;
    top: -15%;
    bottom: -15%;
    inset-inline: 0;
}

.hero__layer--sky img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 35%;
    transform-origin: center center;
}

/* Window frame vignette */
.hero__layer--frame {
    z-index: 3;
    pointer-events: none;
}

.hero__layer--frame::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(
            ellipse 78% 62% at 50% 48%,
            transparent 38%,
            rgba(10, 10, 10, 0.55) 62%,
            rgba(10, 10, 10, 0.92) 100%
        );
}

.hero__layer--frame::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -54%);
    width: min(62vw, 52rem);
    height: min(44vw, 36rem);
    border-radius: 50%;
    border: 2px solid rgba(201, 169, 110, 0.18);
    box-shadow:
        0 0 0 8px rgba(10, 10, 10, 0.35),
        0 0 0 10px rgba(201, 169, 110, 0.06),
        inset 0 0 60px rgba(0, 0, 0, 0.5);
}

.hero__overlay {
    position: absolute;
    inset: 0;
    z-index: 4;
    background: linear-gradient(
        180deg,
        rgba(10, 10, 10, 0.45) 0%,
        rgba(10, 10, 10, 0.15) 40%,
        rgba(10, 10, 10, 0.70) 75%,
        rgba(10, 10, 10, 0.96) 100%
    );
}

.hero__content {
    position: relative;
    z-index: 10;
    width: 100%;
    padding: calc(var(--nav-h) + 2rem) 0 6rem;
}

.hero__eyebrow {
    color: var(--color-gold);
    margin-bottom: 1.25rem;
}

.hero__title {
    margin-bottom: 1.5rem;
    max-width: 14ch;
}

.hero__title .word {
    display: inline-block;
    margin-right: 0.2em;
    opacity: 0;
    transform: translateY(1.25rem);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.hero__lead {
    margin-bottom: 2.5rem;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.hero__scroll {
    position: absolute;
    z-index: 10;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.625rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-text-muted);
}

.hero__scroll-chevron {
    width: 1px;
    height: 2.5rem;
    background: linear-gradient(to bottom, var(--color-gold), transparent);
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateY(0); opacity: 0.5; }
    50%       { transform: translateY(0.5rem); opacity: 1; }
}

/* ─── Sections ─── */
.section {
    padding: var(--space-2xl) 0;
}

.section[data-reveal-hidden] {
    opacity: 0;
    transform: translateY(3rem);
}

.section.is-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 1s var(--ease-out), transform 1s var(--ease-out);
}

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

.section__header {
    margin-bottom: var(--space-xl);
}

.section__header--center {
    text-align: center;
}

.section__header--center .section-label {
    display: block;
    margin-inline: auto;
}

/* ─── About grid ─── */
.about-grid {
    display: grid;
    gap: var(--space-xl);
    align-items: center;
}

@media (min-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

.stat__value {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 300;
    color: var(--color-gold);
    line-height: 1;
}

.stat__label {
    font-size: 0.625rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-top: 0.5rem;
}

.media-frame {
    position: relative;
    overflow: hidden;
    aspect-ratio: 1;
}

.media-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s var(--ease-out);
}

.media-frame:hover img {
    transform: scale(1.04);
}

/* ─── Feature cards ─── */
.card-grid {
    display: grid;
    gap: 1.25rem;
}

@media (min-width: 768px) {
    .card-grid--3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    position: relative;
    min-height: 22rem;
    padding: 2rem;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    border: 1px solid var(--color-border);
    cursor: default;
}

.feature-card__bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-color: var(--color-bg-soft);
    transition: transform 0.8s var(--ease-out);
}

.feature-card:hover .feature-card__bg {
    transform: scale(1.04);
}

.feature-card__shade {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(10, 10, 10, 0.97) 0%,
        rgba(10, 10, 10, 0.55) 50%,
        rgba(10, 10, 10, 0.25) 100%
    );
}

.feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--color-gold), transparent);
    opacity: 0;
    transition: opacity 0.4s;
    z-index: 2;
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-card__body {
    position: relative;
    z-index: 1;
}

.feature-card h3 {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: 1.75rem;
    margin: 0 0 0.75rem;
    color: var(--color-text);
}

.feature-card p {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.feature-card__num {
    position: absolute;
    top: 1.5rem;
    left: 2rem;
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 300;
    color: rgba(201, 169, 110, 0.08);
    line-height: 1;
    z-index: 1;
    transition: color 0.4s;
}

.feature-card:hover .feature-card__num {
    color: rgba(201, 169, 110, 0.14);
}

/* ─── Expertise list ─── */
.expertise-grid {
    display: grid;
    gap: 0;
}

@media (min-width: 768px) {
    .expertise-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.expertise-item {
    padding: 2.5rem 0;
    border-bottom: 1px solid var(--color-border);
}

@media (min-width: 768px) {
    .expertise-item:nth-child(odd) {
        padding-right: 3rem;
        border-right: 1px solid var(--color-border);
    }
    .expertise-item:nth-child(even) {
        padding-left: 3rem;
    }
}

.expertise-item h4 {
    font-size: 0.6875rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-gold);
    margin: 0 0 0.75rem;
    font-weight: 500;
}

.expertise-item p {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* ─── Industry tiles ─── */
.industry-grid {
    display: grid;
    gap: 1.25rem;
}

@media (min-width: 768px) {
    .industry-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .industry-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.industry-tile {
    position: relative;
    overflow: hidden;
    min-height: 22rem;
}

.industry-tile img {
    width: 100%;
    height: 100%;
    min-height: 22rem;
    object-fit: cover;
    transition: transform 0.8s var(--ease-out);
    filter: grayscale(20%);
}

.industry-tile:hover img {
    transform: scale(1.05);
    filter: grayscale(0%);
}

.industry-tile__cap {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.75rem;
    background: linear-gradient(to top, rgba(10, 10, 10, 0.92) 0%, rgba(10, 10, 10, 0.2) 55%, transparent 100%);
    transition: background 0.4s;
}

.industry-tile:hover .industry-tile__cap {
    background: linear-gradient(to top, rgba(10, 10, 10, 0.95) 0%, rgba(10, 10, 10, 0.35) 65%, transparent 100%);
}

.industry-tile h3 {
    font-family: var(--font-display);
    font-weight: 300;
    font-size: 1.5rem;
    margin: 0 0 0.4rem;
}

.industry-tile p {
    margin: 0;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    transform: translateY(0.5rem);
    opacity: 0;
    transition: opacity 0.4s var(--ease-out), transform 0.4s var(--ease-out);
}

.industry-tile:hover p {
    opacity: 1;
    transform: translateY(0);
}

/* ─── Split section ─── */
.split {
    display: grid;
    gap: var(--space-xl);
    align-items: center;
}

@media (min-width: 768px) {
    .split {
        grid-template-columns: 1fr 1fr;
    }
}

/* ─── Table ─── */
.data-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--color-border);
}

.data-table {
    width: 100%;
    min-width: 36rem;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.data-table th {
    text-align: left;
    padding: 1.25rem 1.5rem;
    font-size: 0.625rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-gold);
    background: var(--color-bg-soft);
    border-bottom: 1px solid var(--color-border);
}

.data-table td {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-muted);
}

.data-table tr:hover td {
    background: rgba(201, 169, 110, 0.03);
}

.data-table td:first-child {
    color: var(--color-text);
    font-weight: 500;
}

.data-table .highlight {
    color: var(--color-gold);
}

/* ─── Case study panel ─── */
.case-panel {
    display: grid;
    gap: var(--space-xl);
    padding: var(--space-xl);
    border: 1px solid var(--color-border);
    background: var(--color-bg-soft);
}

@media (min-width: 768px) {
    .case-panel {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }
}

.metric-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--color-border);
    border: 1px solid var(--color-border);
}

.metric {
    padding: 1.75rem;
    text-align: center;
    background: var(--color-bg);
}

.metric__val {
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 300;
    color: var(--color-gold);
}

.metric__lbl {
    font-size: 0.625rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-top: 0.4rem;
}

/* ─── Quote ─── */
.quote-section {
    text-align: center;
}

.quote-section blockquote {
    font-family: var(--font-display);
    font-weight: 300;
    font-style: italic;
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    line-height: 1.35;
    margin: 1.5rem 0 2rem;
    max-width: 42rem;
    margin-inline: auto;
}

/* ─── CTA band ─── */
.cta-band {
    position: relative;
    overflow: hidden;
    text-align: center;
}

.cta-band__bg {
    position: absolute;
    inset: 0;
    opacity: 0.10;
}

.cta-band__bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cta-band__inner {
    position: relative;
    z-index: 1;
}

.cta-band .display-title {
    margin-bottom: 1rem;
}

.cta-band .body-lg {
    margin-inline: auto;
    margin-bottom: 2.5rem;
}

.cta-band__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

/* ─── Footer ─── */
.site-footer {
    border-top: 1px solid var(--color-border);
    padding: var(--space-xl) 0 var(--space-lg);
}

.site-footer__grid {
    display: grid;
    gap: var(--space-xl);
}

@media (min-width: 768px) {
    .site-footer__grid {
        grid-template-columns: 1.2fr 1fr;
    }
}

.site-footer__brand img {
    height: 2.5rem;
    width: auto;
    mix-blend-mode: lighten;
    margin-bottom: 1rem;
}

.site-footer__tagline {
    color: var(--color-text-muted);
    max-width: 18rem;
    font-size: 0.9375rem;
}

.site-footer__contact {
    text-align: left;
}

@media (min-width: 768px) {
    .site-footer__contact {
        text-align: right;
    }
}

.site-footer__contact a {
    color: var(--color-gold);
    font-size: 0.9375rem;
}

.site-footer__rule {
    height: 1px;
    background: var(--color-border);
    margin: var(--space-lg) 0;
    grid-column: 1 / -1;
    border: none;
}

.site-footer__links {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem 2rem;
}

.site-footer__links a {
    font-size: 0.6875rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    transition: color 0.3s;
}

.site-footer__links a:hover {
    color: var(--color-gold);
}

.site-footer__copy {
    font-size: 0.6875rem;
    color: rgba(245, 245, 244, 0.3);
    margin: 0;
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.6875rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    transition: color 0.3s, gap 0.3s;
}

.link-arrow:hover {
    color: var(--color-gold);
    gap: 0.6rem;
}

.text-link {
    color: var(--color-gold);
    border-bottom: 1px solid var(--color-gold-dim);
    font-size: 0.6875rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding-bottom: 0.15rem;
    transition: border-color 0.3s;
}

.text-link:hover {
    border-color: var(--color-gold);
}

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

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .hero__title .word,
    .mobile-menu__link {
        opacity: 1 !important;
        transform: none !important;
    }

    .section[data-reveal-hidden] {
        opacity: 1 !important;
        transform: none !important;
    }
}