/* AMA SRL — Landing page */

:root {
    --color-navy: #0c1929;
    --color-navy-light: #152238;
    --color-slate: #334155;
    --color-accent: #2563eb;
    --color-accent-light: #3b82f6;
    --color-accent-glow: rgba(37, 99, 235, 0.35);
    --color-amber: #f59e0b;
    --color-white: #ffffff;
    --color-muted: #64748b;
    --color-surface: #f8fafc;
    --color-border: #e2e8f0;
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'DM Sans', system-ui, sans-serif;
    --nav-height: 4.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --shadow-soft: 0 4px 24px rgba(15, 23, 42, 0.06);
    --shadow-card: 0 12px 40px rgba(15, 23, 42, 0.08);
    --shadow-hover: 0 24px 48px rgba(15, 23, 42, 0.12);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

@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;
    }
}

body {
    font-family: var(--font-body);
    color: var(--color-navy);
    background: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ── Navigation ── */
.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--nav-height);
    transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}

.site-nav.is-scrolled {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 1px 0 var(--color-border), var(--shadow-soft);
}

.site-nav.is-scrolled .nav-logo-text,
.site-nav.is-scrolled .nav-link {
    color: var(--color-navy);
}

.site-nav.is-scrolled .nav-link:hover {
    color: var(--color-accent);
}

.site-nav.is-scrolled .lang-btn {
    border-color: var(--color-border);
    color: var(--color-navy);
    background: var(--color-white);
}

.site-nav.is-scrolled .nav-staff {
    border-color: var(--color-border);
    color: var(--color-muted);
}

.nav-inner {
    max-width: 72rem;
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    flex-shrink: 0;
}

.nav-logo-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.625rem;
    background: linear-gradient(135deg, var(--color-accent) 0%, #1d4ed8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
    box-shadow: 0 4px 12px var(--color-accent-glow);
}

.nav-logo-text {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    letter-spacing: 0.02em;
    transition: color var(--transition);
}

.nav-links {
    display: none;
    align-items: center;
    gap: 0.25rem;
}

@media (min-width: 768px) {
    .nav-links { display: flex; }
}

.nav-link {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.88);
    text-decoration: none;
    border-radius: 9999px;
    transition: color var(--transition), background var(--transition);
}

.nav-link:hover,
.nav-link.is-active {
    color: white;
    background: rgba(255, 255, 255, 0.12);
}

.site-nav.is-scrolled .nav-link:hover,
.site-nav.is-scrolled .nav-link.is-active {
    background: rgba(37, 99, 235, 0.08);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.lang-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.4375rem 0.875rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: white;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 9999px;
    cursor: pointer;
    transition: all var(--transition);
    backdrop-filter: blur(8px);
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.18);
}

.nav-staff {
    display: none;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    color: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 9999px;
    text-decoration: none;
    transition: all var(--transition);
}

@media (min-width: 640px) {
    .nav-staff { display: flex; }
}

.nav-staff:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 0.5rem;
    color: white;
    cursor: pointer;
    transition: all var(--transition);
}

@media (min-width: 768px) {
    .nav-toggle { display: none; }
}

.site-nav.is-scrolled .nav-toggle {
    color: var(--color-navy);
    background: var(--color-surface);
    border-color: var(--color-border);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: white;
    padding: 1rem 1.5rem 1.5rem;
    box-shadow: var(--shadow-card);
    border-bottom: 1px solid var(--color-border);
    z-index: 99;
}

.mobile-menu.is-open { display: block; }

.mobile-menu .nav-link {
    display: block;
    color: var(--color-navy);
    padding: 0.75rem 0;
    border-radius: 0;
    border-bottom: 1px solid var(--color-border);
}

.mobile-menu .nav-link:last-child { border-bottom: none; }

/* ── Hero ── */
.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    padding: calc(var(--nav-height) + 3rem) 1.5rem 5rem;
    overflow: hidden;
    background: var(--color-navy);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, rgba(12, 25, 41, 0.97) 0%, rgba(21, 34, 56, 0.85) 45%, rgba(37, 99, 235, 0.25) 100%),
        url('../images/italy-hero.jpg') center / cover no-repeat;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 20%, transparent 100%);
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
}

.hero-orb--1 {
    width: 32rem;
    height: 32rem;
    top: -8rem;
    right: -6rem;
    background: rgba(37, 99, 235, 0.25);
}

.hero-orb--2 {
    width: 24rem;
    height: 24rem;
    bottom: -4rem;
    left: -4rem;
    background: rgba(245, 158, 11, 0.12);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 72rem;
    margin: 0 auto;
    width: 100%;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 1rem 0.375rem 0.5rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 9999px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.8125rem;
    font-weight: 500;
    margin-bottom: 1.75rem;
    backdrop-filter: blur(8px);
    animation: fadeUp 0.8s ease both;
}

.hero-badge-dot {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: #22c55e;
    box-shadow: 0 0 8px rgba(34, 197, 94, 0.6);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.75rem, 7vw, 4.75rem);
    font-weight: 700;
    line-height: 1.08;
    color: white;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
    animation: fadeUp 0.8s 0.1s ease both;
}

.hero-title-accent {
    display: block;
    background: linear-gradient(135deg, #93c5fd 0%, #60a5fa 50%, #fbbf24 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.78);
    max-width: 36rem;
    line-height: 1.7;
    margin-bottom: 2.5rem;
    animation: fadeUp 0.8s 0.2s ease both;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3.5rem;
    animation: fadeUp 0.8s 0.3s ease both;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: 9999px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition);
    font-family: inherit;
}

.btn-primary {
    background: white;
    color: var(--color-accent);
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.15);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(255, 255, 255, 0.22);
}

.btn-outline {
    background: transparent;
    color: white;
    border: 1.5px solid rgba(255, 255, 255, 0.35);
    backdrop-filter: blur(4px);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-2px);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    max-width: 32rem;
    animation: fadeUp 0.8s 0.4s ease both;
}

@media (min-width: 640px) {
    .hero-stats { gap: 1.5rem; }
}

.hero-stat {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(8px);
}

.hero-stat-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    line-height: 1.2;
}

@media (min-width: 640px) {
    .hero-stat-value { font-size: 1.75rem; }
}

.hero-stat-label {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.65);
    margin-top: 0.25rem;
}

.hero-scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.5);
    font-size: 1.25rem;
    animation: bounce 2s infinite;
    z-index: 2;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ── Sections ── */
.section {
    padding: 5rem 1.5rem;
}

.section--surface { background: var(--color-surface); }
.section--dark {
    background: linear-gradient(160deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
    color: white;
}

.container {
    max-width: 72rem;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    max-width: 40rem;
    margin: 0 auto 3.5rem;
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
}

.section--dark .section-label { color: #93c5fd; }

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.875rem, 4vw, 2.75rem);
    font-weight: 700;
    color: var(--color-navy);
    line-height: 1.2;
    margin-bottom: 1rem;
}

.section--dark .section-title { color: white; }

.section-desc {
    font-size: 1.0625rem;
    color: var(--color-muted);
    line-height: 1.7;
}

.section--dark .section-desc { color: rgba(255, 255, 255, 0.72); }

/* Reveal animation */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ── About ── */
.about-grid {
    display: grid;
    gap: 3rem;
    align-items: center;
}

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

.about-text p {
    font-size: 1.0625rem;
    color: var(--color-muted);
    line-height: 1.75;
    margin-bottom: 2rem;
}

.about-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.about-metric {
    text-align: center;
    padding: 1.25rem 0.75rem;
    background: white;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
}

.about-metric-value {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1.2;
}

.about-metric-label {
    font-size: 0.8125rem;
    color: var(--color-muted);
    margin-top: 0.375rem;
}

.mission-card {
    position: relative;
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    background: linear-gradient(145deg, var(--color-accent) 0%, #1d4ed8 100%);
    color: white;
    overflow: hidden;
    box-shadow: 0 20px 50px var(--color-accent-glow);
}

.mission-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 20rem;
    height: 20rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
}

.mission-card h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
}

.mission-card p {
    font-size: 1rem;
    line-height: 1.75;
    opacity: 0.92;
    position: relative;
}

.mission-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.75rem;
    background: rgba(255, 255, 255, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
    position: relative;
}

/* ── Services ── */
.services-grid {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
    .services-grid { grid-template-columns: repeat(3, 1fr); }
}

.service-card {
    position: relative;
    padding: 2rem;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--card-accent, var(--color-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: transparent;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 3.25rem;
    height: 3.25rem;
    border-radius: 0.875rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.375rem;
    margin-bottom: 1.25rem;
    background: var(--icon-bg, rgba(37, 99, 235, 0.1));
    color: var(--card-accent, var(--color-accent));
}

.service-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 0.625rem;
}

.service-card p {
    font-size: 0.9375rem;
    color: var(--color-muted);
    line-height: 1.65;
}

.service-card--blue { --card-accent: #2563eb; --icon-bg: rgba(37, 99, 235, 0.1); }
.service-card--green { --card-accent: #059669; --icon-bg: rgba(5, 150, 105, 0.1); }
.service-card--amber { --card-accent: #d97706; --icon-bg: rgba(217, 119, 6, 0.1); }
.service-card--red { --card-accent: #dc2626; --icon-bg: rgba(220, 38, 38, 0.1); }
.service-card--purple { --card-accent: #7c3aed; --icon-bg: rgba(124, 58, 237, 0.1); }
.service-card--indigo { --card-accent: #4f46e5; --icon-bg: rgba(79, 70, 229, 0.1); }

/* ── Features ── */
.features-grid {
    display: grid;
    gap: 2rem;
}

@media (min-width: 640px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
}

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

.feature-item {
    text-align: center;
    padding: 1.5rem;
}

.feature-icon {
    width: 4rem;
    height: 4rem;
    margin: 0 auto 1.25rem;
    border-radius: 1rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.375rem;
    color: #93c5fd;
    transition: transform var(--transition), background var(--transition);
}

.feature-item:hover .feature-icon {
    transform: scale(1.08);
    background: rgba(255, 255, 255, 0.12);
}

.feature-item h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.feature-item p {
    font-size: 0.875rem;
    opacity: 0.75;
    line-height: 1.6;
}

/* ── Projects ── */
.projects-grid {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .projects-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
    .projects-grid { grid-template-columns: repeat(2, 1fr); }
}

.project-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: box-shadow var(--transition), transform var(--transition);
}

.project-card:hover {
    box-shadow: var(--shadow-card);
    transform: translateY(-4px);
}

.project-card-header {
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid var(--color-border);
}

.project-city-dot {
    width: 0.625rem;
    height: 0.625rem;
    border-radius: 50%;
    flex-shrink: 0;
}

.project-card-header h3 {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--color-navy);
}

.project-list {
    padding: 1rem 1.5rem 1.25rem;
    list-style: none;
    margin: 0;
}

.project-list li {
    position: relative;
    padding: 0.5rem 0 0.5rem 1.25rem;
    font-size: 0.9375rem;
    color: var(--color-muted);
    border-bottom: 1px solid var(--color-surface);
}

.project-list li:last-child { border-bottom: none; }

.project-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--city-color, var(--color-accent));
    opacity: 0.6;
}

.social-block {
    text-align: center;
    margin-top: 4rem;
    padding: 2.5rem;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-soft);
}

.social-block h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 0.5rem;
}

.social-block p {
    color: var(--color-muted);
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.social-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: white;
    border-radius: 9999px;
    text-decoration: none;
    transition: transform var(--transition), box-shadow var(--transition);
}

.social-btn:hover {
    transform: translateY(-2px);
}

.social-btn--fb { background: #1877f2; box-shadow: 0 4px 16px rgba(24, 119, 242, 0.3); }
.social-btn--ig {
    background: linear-gradient(135deg, #833ab4, #fd1d1d, #fcb045);
    box-shadow: 0 4px 16px rgba(131, 58, 180, 0.3);
}

/* ── Contact ── */
.contact-grid {
    display: grid;
    gap: 3rem;
}

@media (min-width: 768px) {
    .contact-grid { grid-template-columns: 1fr 1.1fr; }
}

.contact-info h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.75rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-item-icon {
    width: 2.75rem;
    height: 2.75rem;
    flex-shrink: 0;
    border-radius: 0.75rem;
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.contact-item h4 {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: 0.125rem;
}

.contact-item p {
    font-size: 0.9375rem;
    color: var(--color-muted);
}

.contact-form-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-soft);
}

@media (min-width: 640px) {
    .contact-form-card { padding: 2.5rem; }
}

.contact-form-card h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.75rem;
}

.form-group { margin-bottom: 1.25rem; }

.form-group label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: 0.375rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
    font-family: inherit;
    color: var(--color-navy);
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    border-radius: 0.625rem;
    transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-accent);
    background: white;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.form-control::placeholder { color: #94a3b8; }

textarea.form-control { resize: vertical; min-height: 7rem; }

.btn-submit {
    width: 100%;
    padding: 0.9375rem;
    background: linear-gradient(135deg, var(--color-accent) 0%, #1d4ed8 100%);
    color: white;
    font-size: 0.9375rem;
    font-weight: 600;
    border: none;
    border-radius: 0.625rem;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
    font-family: inherit;
}

.btn-submit:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 24px var(--color-accent-glow);
}

/* ── Footer ── */
.site-footer {
    background: var(--color-navy);
    color: rgba(255, 255, 255, 0.72);
    padding: 4rem 1.5rem 2rem;
}

.footer-grid {
    display: grid;
    gap: 2.5rem;
    max-width: 72rem;
    margin: 0 auto;
}

@media (min-width: 640px) {
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
    .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; }
}

.footer-brand h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
}

.footer-brand p {
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: 1.25rem;
}

.footer-social {
    display: flex;
    gap: 0.75rem;
}

.footer-social a {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 0.5rem;
    background: rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: background var(--transition), color var(--transition);
}

.footer-social a:hover {
    background: var(--color-accent);
    color: white;
}

.footer-col h4 {
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: white;
    margin-bottom: 1rem;
}

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

.footer-col li { margin-bottom: 0.5rem; }

.footer-col a {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.65);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-col a:hover { color: white; }

.footer-bottom {
    max-width: 72rem;
    margin: 3rem auto 0;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.45);
}