/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --blue-900: #0A1628;
    --blue-800: #132d4a;
    --blue-700: #1a3f66;
    --blue-600: #1e5090;
    --blue-500: #2563a8;
    --blue-400: #3b82c4;
    --amber-500: #E8A800;
    --amber-400: #fbbf24;
    --amber-300: #fcd34d;
    --gray-50: #F5F3EF;
    --gray-100: #EDEBE6;
    --gray-200: #e2e0db;
    --gray-300: #c8c5be;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #0F1D38;
    --gray-900: #0A1628;
    --white: #FAFAF8;
    --radius: 10px;
    --radius-lg: 14px;
    --shadow-sm: 0 1px 2px rgba(10,22,40,0.04);
    --shadow: 0 1px 3px rgba(10,22,40,0.08), 0 1px 2px rgba(10,22,40,0.04);
    --shadow-md: 0 4px 6px rgba(10,22,40,0.06), 0 2px 4px rgba(10,22,40,0.04);
    --shadow-lg: 0 10px 25px rgba(10,22,40,0.1), 0 4px 10px rgba(10,22,40,0.05);
    --transition: 0.2s ease;
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Custom selection */
::selection {
    background: var(--amber-500);
    color: var(--blue-900);
}
::-moz-selection {
    background: var(--amber-500);
    color: var(--blue-900);
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--gray-800);
    line-height: 1.65;
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    line-height: 1.05;
    color: var(--blue-900);
    letter-spacing: -0.03em;
    text-wrap: balance;
}
h1 { font-size: clamp(2.5rem, 5.5vw, 4.5rem); font-weight: 700; }
h2 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; }
h3 { font-size: clamp(1.125rem, 2vw, 1.5rem); font-weight: 600; letter-spacing: -0.02em; }

.section-label {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--blue-500);
    margin-bottom: 12px;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s var(--ease-out-expo);
    font-family: 'Space Grotesk', sans-serif;
    letter-spacing: -0.01em;
    text-decoration: none;
    line-height: 1.2;
}
.btn:focus-visible {
    outline: 3px solid var(--amber-400);
    outline-offset: 3px;
}

.btn-primary {
    background: var(--amber-500);
    color: var(--blue-900);
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(232,168,0,0.2);
}
.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.25) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.3s var(--ease-out-expo);
}
.btn-primary:hover {
    background: var(--amber-400);
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(232,168,0,0.3);
}
.btn-primary:hover::before { opacity: 1; }
.btn-primary:hover svg { transform: translateX(3px); }
.btn-primary:active { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(232,168,0,0.2); }

.btn-secondary {
    background: var(--white);
    color: var(--blue-700);
    border: 2px solid var(--blue-400);
}
.btn-secondary:hover {
    background: var(--blue-700);
    color: var(--white);
    border-color: var(--blue-700);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.btn-secondary:hover svg { transform: translateX(3px); }

.btn-outline-light {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.4);
}
.btn-outline-light:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.7); }

.btn-hero {
    background: rgba(255,255,255,0.14);
    color: var(--white);
    border: 1.5px solid rgba(255,255,255,0.45);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 18px 32px;
    font-size: 1rem;
    text-shadow: 0 1px 4px rgba(0,0,0,0.3);
}
.btn-hero:hover {
    background: var(--amber-500);
    color: var(--blue-900);
    border-color: var(--amber-500);
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(232,168,0,0.3);
    text-shadow: none;
}
.btn-hero:hover svg { transform: translateX(2px); }

.btn svg {
    width: 18px;
    height: 18px;
    transition: transform 0.3s var(--ease-out-expo);
    flex-shrink: 0;
}

/* ===== HEADER / NAV ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(250,250,248,0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid transparent;
    transition: all 0.4s var(--ease-out-expo);
}
.header.scrolled {
    box-shadow: 0 1px 12px rgba(10,22,40,0.06);
    border-bottom-color: var(--gray-200);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
    transition: height 0.4s var(--ease-out-expo);
}
.header.scrolled .nav {
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
}
.logo img {
    height: 55px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}
.nav-links a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-600);
    transition: color 0.3s var(--ease-out-expo);
    position: relative;
}
.nav-links a:not(.nav-cta)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--blue-600);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s var(--ease-out-expo);
}
.nav-links a:not(.nav-cta):hover::after {
    transform: scaleX(1);
    transform-origin: left;
}
.nav-links a:hover { color: var(--blue-600); }
.nav-links a.active:not(.nav-cta) {
    color: var(--blue-600);
}
.nav-links a.active:not(.nav-cta)::after {
    transform: scaleX(1);
    transform-origin: left;
}

.nav-cta {
    padding: 11px 22px;
    background: var(--amber-500);
    color: var(--blue-900) !important;
    border-radius: var(--radius);
    font-weight: 600 !important;
    font-family: 'Space Grotesk', sans-serif;
    letter-spacing: -0.01em;
    transition: all 0.3s var(--ease-out-expo);
    box-shadow: 0 2px 8px rgba(232,168,0,0.15);
}
.nav-cta:hover {
    background: var(--amber-400);
    color: var(--blue-900) !important;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(232,168,0,0.25);
}
.nav-cta::after { display: none !important; }

/* ===== NAV DROPDOWN ===== */
.nav-dropdown {
    position: relative;
}
.nav-dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--gray-600);
    transition: color 0.3s var(--ease-out-expo);
    position: relative;
    cursor: pointer;
}
.nav-dropdown-trigger::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--blue-600);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s var(--ease-out-expo);
}
.nav-dropdown:hover .nav-dropdown-trigger::after {
    transform: scaleX(1);
    transform-origin: left;
}
.nav-dropdown:hover .nav-dropdown-trigger { color: var(--blue-600); }
.nav-dropdown-trigger .dropdown-arrow {
    width: 13px;
    height: 13px;
    transition: transform 0.3s var(--ease-out-expo);
    flex-shrink: 0;
    margin-top: 1px;
}
.nav-dropdown:hover .nav-dropdown-trigger .dropdown-arrow {
    transform: rotate(180deg);
}
.nav-dropdown-menu {
    position: absolute;
    top: calc(100% + 16px);
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 6px;
    min-width: 290px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.22s var(--ease-out-expo), transform 0.22s var(--ease-out-expo), visibility 0.22s;
    z-index: 200;
}
/* bridge gap so mouse can move from trigger to menu */
.nav-dropdown-menu::before {
    content: '';
    position: absolute;
    top: -16px;
    left: 0;
    right: 0;
    height: 16px;
}
.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}
.nav-dropdown-menu a {
    display: block;
    padding: 10px 14px;
    border-radius: var(--radius);
    color: var(--gray-700);
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.18s, color 0.18s;
}
.nav-dropdown-menu a::after { display: none !important; }
.nav-dropdown-menu a:hover {
    background: var(--gray-50);
    color: var(--blue-600);
}
.nav-dropdown-menu a.active {
    background: var(--gray-50);
    color: var(--blue-600);
    font-weight: 600;
}

/* Active state for dropdown trigger */
.nav-dropdown-trigger.active {
    color: var(--blue-600);
}
.nav-dropdown-trigger.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: all 0.3s;
}

/* ===== HERO ===== */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 100%);
    position: relative;
    overflow: hidden;
}
.hero.has-bg {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}
.hero.has-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(to right, rgba(10,22,40,0.97) 0%, rgba(10,22,40,0.94) 55%, rgba(10,22,40,0.7) 100%),
        linear-gradient(to top, rgba(10,22,40,0.97) 0%, rgba(10,22,40,0.6) 45%, transparent 75%);
    z-index: 0;
}
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(245,158,11,0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(59,130,196,0.15) 0%, transparent 50%);
    z-index: 1;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(245,158,11,0.3), transparent);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 780px;
}

.hero h1 {
    color: var(--white);
    margin-bottom: 28px;
    text-shadow: 0 2px 16px rgba(0,0,0,0.6), 0 1px 3px rgba(0,0,0,0.4);
    line-height: 0.95;
}
.hero h1 span { color: var(--amber-400); }

.hero-text {
    font-size: 1.0625rem;
    line-height: 1.75;
    color: rgba(255,255,255,0.95);
    margin-bottom: 36px;
    text-shadow: 0 1px 10px rgba(0,0,0,0.7), 0 1px 3px rgba(0,0,0,0.5);
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.hero-stats {
    display: flex;
    gap: 48px;
    margin-top: 56px;
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.25);
}

.hero-stat-value {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--amber-400);
    text-shadow: 0 2px 12px rgba(0,0,0,0.5), 0 1px 3px rgba(0,0,0,0.4);
    letter-spacing: -0.03em;
}
.hero-stat-label {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.9);
    margin-top: 4px;
    text-shadow: 0 1px 6px rgba(0,0,0,0.5), 0 1px 2px rgba(0,0,0,0.3);
}

/* ===== SECTIONS ===== */
section { padding: 120px 0; }

/* Specializations */
.specializations { background: var(--gray-50); padding: 140px 0; }

.spec-grid {
    display: flex;
    flex-direction: column;
    gap: 32px;
    margin-top: 48px;
}

.spec-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: all 0.4s var(--ease-out-expo);
}
.spec-card:hover { box-shadow: var(--shadow-lg); border-color: var(--blue-400); transform: translateY(-4px); }

.spec-card-visual {
    background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-700) 100%);
    padding: 48px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.spec-card-visual::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 70%, rgba(245,158,11,0.1) 0%, transparent 60%);
}

.spec-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    position: relative;
}
.spec-icon svg { width: 32px; height: 32px; color: var(--amber-400); }

.spec-card-visual h3 {
    color: var(--white);
    font-size: clamp(1.25rem, 2.2vw, 1.625rem);
    margin-bottom: 16px;
    position: relative;
}

.spec-card-visual .spec-subtitle {
    color: rgba(255,255,255,0.65);
    font-size: 0.9375rem;
    line-height: 1.7;
    position: relative;
}

.spec-card-body {
    padding: 48px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.spec-card-body p {
    color: var(--gray-600);
    margin-bottom: 24px;
    line-height: 1.75;
}

.spec-features {
    list-style: none;
    margin-bottom: 28px;
}
.spec-features li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 0;
    font-size: 0.9375rem;
    color: var(--gray-700);
    line-height: 1.5;
}
.spec-features li svg {
    width: 20px;
    height: 20px;
    color: var(--blue-600);
    flex-shrink: 0;
    margin-top: 1px;
}

.spec-audience {
    font-size: 0.8125rem;
    color: var(--gray-500);
    padding-top: 20px;
    border-top: 1px solid var(--gray-100);
    margin-bottom: 28px;
}
.spec-audience strong { color: var(--gray-700); }

.spec-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: var(--blue-700);
    color: var(--white);
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    font-family: 'Space Grotesk', sans-serif;
    letter-spacing: -0.01em;
    transition: all 0.3s var(--ease-out-expo);
    align-self: flex-start;
}
.spec-cta:hover {
    background: var(--blue-600);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(26,63,102,0.2);
}
.spec-cta:hover svg { transform: translateX(4px); }
.spec-cta svg {
    width: 18px;
    height: 18px;
    transition: transform 0.3s var(--ease-out-expo);
}

/* Why Us */
.why-us { background: var(--white); padding: 120px 0; }

.why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.why-card {
    padding: 36px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    transition: all 0.4s var(--ease-out-expo);
}
.why-card:hover { border-color: var(--blue-400); box-shadow: var(--shadow-md); transform: translateY(-4px); }

.why-number {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.75rem;
    font-weight: 700;
    color: var(--blue-600);
    line-height: 1;
    margin-bottom: 16px;
    letter-spacing: -0.03em;
}

.why-card h3 {
    font-size: 1.0625rem;
    margin-bottom: 12px;
}

.why-card p {
    font-size: 0.9375rem;
    color: var(--gray-500);
    line-height: 1.65;
}

/* Projects */
.projects { background: var(--gray-50); }

.projects-intro {
    color: var(--gray-600);
    max-width: 680px;
    margin-top: 16px;
    margin-bottom: 48px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.project-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: all 0.4s var(--ease-out-expo);
}
.project-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px) scale(1.02); border-color: var(--blue-400); }

.project-img {
    height: 200px;
    background: var(--blue-800);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.project-img::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--blue-900), var(--blue-700));
}
.project-img svg {
    position: relative;
    z-index: 1;
    width: 48px;
    height: 48px;
    color: rgba(255,255,255,0.2);
}

.project-body { padding: 24px; }
.project-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--blue-600);
    background: rgba(37,99,168,0.08);
    padding: 4px 10px;
    border-radius: 4px;
    margin-bottom: 12px;
}
.project-body h3 { font-size: 1.0625rem; margin-bottom: 12px; }
.project-body p { font-size: 0.9375rem; color: var(--gray-500); line-height: 1.65; }

.projects-cta {
    text-align: center;
    margin-top: 40px;
}

/* Area */
.area { background: var(--white); }

.area-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
    margin-top: 48px;
}

.area-map {
    border-radius: var(--radius-lg);
    height: 360px;
    position: relative;
    overflow: hidden;
}
.area-map iframe {
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
}

.area-text p {
    color: var(--gray-600);
    margin-bottom: 24px;
    line-height: 1.7;
}

.cities-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.city-tag {
    display: inline-block;
    padding: 6px 14px;
    background: var(--gray-100);
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--gray-700);
    font-weight: 500;
    transition: all var(--transition);
}
.city-tag:hover { background: var(--blue-700); color: var(--white); }

/* CTA / Contact */
.contact {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--blue-900) 0%, var(--blue-800) 100%);
    position: relative;
}
.contact::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 20%, rgba(245,158,11,0.06) 0%, transparent 50%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
    position: relative;
    z-index: 1;
}

.contact-info h2 { color: var(--white); margin-bottom: 20px; }
.contact-info > p {
    color: rgba(255,255,255,0.7);
    margin-bottom: 32px;
    line-height: 1.7;
}

.contact-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}
.contact-feature-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    background: rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.contact-feature-icon svg { width: 20px; height: 20px; color: var(--amber-400); }
.contact-feature-text h4 {
    color: var(--white);
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 4px;
}
.contact-feature-text p {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.5);
}

.contact-form-wrapper {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 6px;
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 18px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.9375rem;
    color: var(--gray-800);
    transition: all 0.3s var(--ease-out-expo);
    background: #fff;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--blue-500);
    box-shadow: 0 0 0 4px rgba(37,99,168,0.1);
    transform: translateY(-1px);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-400);
    transition: opacity 0.3s var(--ease-out-expo);
}
.form-group input:focus::placeholder,
.form-group textarea:focus::placeholder {
    opacity: 0.5;
}
.form-group textarea { resize: vertical; min-height: 100px; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.file-upload {
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
}
.file-upload:hover { border-color: var(--blue-400); background: rgba(37,99,168,0.02); }
.file-upload svg { width: 28px; height: 28px; color: var(--gray-400); margin: 0 auto 8px; }
.file-upload p { font-size: 0.875rem; color: var(--gray-500); }
.file-upload input { display: none; }

.form-submit {
    width: 100%;
    margin-top: 16px;
    padding: 20px;
    font-size: 1.125rem;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    letter-spacing: -0.01em;
    transition: all 0.3s var(--ease-out-expo);
    box-shadow: 0 4px 16px rgba(232,168,0,0.25);
}
.form-submit:hover {
    box-shadow: 0 8px 32px rgba(232,168,0,0.35);
}
.form-submit:active {
    transform: scale(0.98);
    box-shadow: 0 2px 8px rgba(232,168,0,0.2);
}

/* Form success screen */
.form-success {
    text-align: center;
    padding: 48px 24px;
}
.form-success-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    margin-bottom: 24px;
}
.form-success h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}
.form-success p {
    font-size: 0.95rem;
    color: var(--gray-600);
    line-height: 1.6;
    max-width: 420px;
    margin: 0 auto 28px;
}
.form-success-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1.0625rem;
    padding: 18px 36px;
    text-decoration: none;
}

/* Form error message */
.form-error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    margin-bottom: 12px;
}

/* Button spinner */
.btn-spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2.5px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: btn-spin 0.6s linear infinite;
    vertical-align: middle;
}
@keyframes btn-spin {
    to { transform: rotate(360deg); }
}

/* ===== STEP FORM ===== */
.form-header { margin-bottom: 24px; }
.form-header h2 { font-size: 1.5rem; font-weight: 700; color: var(--gray-900); margin-bottom: 4px; }
.form-header p { font-size: 0.9rem; color: var(--gray-500); }

/* Step tabs */
.form-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 28px;
    border-bottom: 2px solid var(--gray-200);
}
.form-tab {
    flex: 1;
    padding: 12px 16px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-400);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
    text-align: center;
}
.form-tab.active {
    color: var(--blue-600);
    border-bottom-color: var(--blue-500);
}
.form-tab .tab-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--gray-200);
    color: var(--gray-500);
    font-size: 0.75rem;
    font-weight: 700;
    margin-right: 8px;
    transition: all var(--transition);
}
.form-tab.active .tab-number {
    background: var(--blue-500);
    color: #fff;
}

/* Form panels */
.form-panel { display: none; }
.form-panel.active { display: block; }

/* Step fields */
.form-step {
    padding: 16px 0;
    border-bottom: 1px solid var(--gray-100);
}
.form-step:last-child { border-bottom: none; }

.step-title {
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--gray-800);
    display: block;
    margin-bottom: 10px;
}

/* Shared input styles for step forms */
.form-step input[type="text"],
.form-step input[type="tel"],
.form-step input[type="email"],
.form-step textarea,
.form-step select {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.9375rem;
    color: var(--gray-800);
    background: #fff;
    transition: all 0.3s var(--ease-out-expo);
}
.form-step input[type="text"]:focus,
.form-step input[type="tel"]:focus,
.form-step input[type="email"]:focus,
.form-step textarea:focus,
.form-step select:focus {
    outline: none;
    border-color: var(--blue-500);
    box-shadow: 0 0 0 4px rgba(37,99,168,0.1);
}
.form-step input::placeholder,
.form-step textarea::placeholder {
    color: var(--gray-400);
}
.form-step textarea {
    resize: vertical;
    min-height: 100px;
}

/* Contact info row at top */
.form-contact-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 4px;
}
.form-contact-row .form-field-full {
    grid-column: 1 / -1;
}
.form-field label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--gray-600);
    margin-bottom: 4px;
}

/* Radio group */
.radio-group {
    display: flex;
    gap: 10px;
    margin-top: 4px;
}
.radio-group label {
    cursor: pointer;
    padding: 8px 20px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 0.875rem;
    color: var(--gray-600);
    transition: all var(--transition);
    user-select: none;
}
.radio-group label:hover {
    border-color: var(--blue-400);
    color: var(--blue-600);
}
.radio-group input[type="radio"] { display: none; }
.radio-group label:has(input:checked) {
    background: var(--blue-50, #eff6ff);
    border-color: var(--blue-500);
    color: var(--blue-700);
    font-weight: 600;
}

/* Conditional content */
.conditional-content {
    margin-top: 12px;
    transition: all var(--transition);
}
.conditional-content.hidden { display: none; }

.info-message {
    background: var(--blue-50, #eff6ff);
    border: 1px solid var(--blue-200, #bfdbfe);
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 0.8125rem;
    color: var(--blue-700, #1d4ed8);
    line-height: 1.5;
}

.file-label {
    display: block;
    font-size: 0.8125rem;
    color: var(--gray-600);
    margin-bottom: 6px;
}

/* Address grid */
.address-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 6px;
}

/* Calendar embed */
.calendar-embed-container {
    margin-top: 8px;
    border-radius: var(--radius);
    overflow: hidden;
}
.calendar-embed-container iframe {
    width: 100%;
    height: 600px;
    border: none;
    border-radius: var(--radius);
}

/* Navigation buttons */
.form-nav {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}
.form-nav .btn-next {
    flex: 1;
    padding: 16px;
    font-size: 1rem;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    letter-spacing: -0.01em;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s var(--ease-out-expo);
    background: var(--blue-600);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.form-nav .btn-next:hover {
    background: var(--blue-700);
    box-shadow: 0 4px 16px rgba(37,99,168,0.25);
}
.form-nav .btn-back {
    padding: 16px 24px;
    font-size: 0.9375rem;
    font-family: inherit;
    font-weight: 500;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    background: #fff;
    color: var(--gray-600);
}
.form-nav .btn-back:hover {
    border-color: var(--gray-400);
    color: var(--gray-800);
}

@media (max-width: 768px) {
    .address-grid {
        grid-template-columns: 1fr;
    }
    .radio-group {
        flex-direction: column;
        gap: 8px;
    }
    .calendar-embed-container iframe {
        height: 500px;
    }
    .form-contact-row {
        grid-template-columns: 1fr;
    }
    .form-tabs {
        gap: 0;
    }
    .form-tab {
        font-size: 0.8125rem;
        padding: 10px 8px;
    }
}

/* ===== FOOTER ===== */
.footer {
    background: var(--gray-900);
    padding: 48px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand p {
    color: var(--gray-400);
    font-size: 0.875rem;
    line-height: 1.7;
    margin-top: 16px;
    max-width: 300px;
}

.footer h4 {
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.footer ul li { margin-bottom: 10px; }
.footer ul a {
    color: var(--gray-400);
    font-size: 0.875rem;
    transition: color var(--transition);
}
.footer ul a:hover { color: var(--white); }

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    font-size: 0.8125rem;
    color: var(--gray-500);
}

/* ===== MOBILE NAV ===== */
.mobile-nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 16px 24px;
    box-shadow: var(--shadow-lg);
    z-index: 999;
}
.mobile-nav.open { display: block; }
.mobile-nav a {
    display: block;
    padding: 12px 0;
    font-weight: 500;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-100);
}
.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav-dropdown { border-bottom: 1px solid var(--gray-100); }
.mobile-nav-uslugi-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 12px 0;
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 500;
    font-family: inherit;
    color: var(--gray-700);
    cursor: pointer;
    text-align: left;
}
.mobile-nav-uslugi-btn .dropdown-arrow {
    width: 14px;
    height: 14px;
    transition: transform 0.3s var(--ease-out-expo);
    flex-shrink: 0;
}
.mobile-nav-uslugi-btn.open .dropdown-arrow { transform: rotate(180deg); }
.mobile-nav-sub {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s var(--ease-out-expo);
}
.mobile-nav-sub.open { max-height: 200px; }
.mobile-nav-sub a {
    display: block;
    padding: 10px 0 10px 12px;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--gray-600);
    border-bottom: 1px solid var(--gray-100);
}
.mobile-nav-uslugi-btn.active { color: var(--blue-600); }
.mobile-nav-sub a.active {
    color: var(--blue-600);
    font-weight: 600;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .why-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .hamburger { display: flex; }

    /* Hero mobile */
    .hero { padding: 110px 0 48px; }
    .hero.has-bg[data-mobile-bg] {
        background-image: var(--hero-mobile-bg) !important;
    }
    .hero.has-bg::after {
        background:
            linear-gradient(to bottom, rgba(12,26,46,0.85) 0%, rgba(12,26,46,0.75) 60%, rgba(12,26,46,0.9) 100%);
    }

    .logo img {
        height: 42px;
    }

    .hero h1 { font-size: 1.75rem; line-height: 1.1; }
    .hero-text { font-size: 0.9375rem; line-height: 1.65; margin-bottom: 28px; }
    .hero-buttons { flex-direction: column; gap: 12px; }
    .btn-hero { justify-content: center; padding: 14px 24px; font-size: 0.875rem; }
    .hero-stats { gap: 0; margin-top: 36px; padding-top: 24px; }
    .hero-stat { flex: 1; min-width: 0; text-align: center; }
    .hero-stat-value { font-size: 1.5rem; }
    .hero-stat-label { font-size: 0.75rem; }

    /* Spec cards mobile */
    .spec-card { grid-template-columns: 1fr; }
    .spec-card-visual { padding: 28px 24px; }
    .spec-card-visual h3 { font-size: 1.125rem; }
    .spec-card-visual .spec-subtitle { font-size: 0.875rem; }
    .spec-card-body { padding: 28px 24px; }
    .spec-card-body p { font-size: 0.875rem; margin-bottom: 20px; }
    .spec-features li { font-size: 0.875rem; padding: 6px 0; }
    .spec-cta { width: 100%; justify-content: center; padding: 14px 24px; font-size: 0.875rem; }

    /* Why us mobile */
    .why-grid { grid-template-columns: 1fr; }
    .why-card[style*="span"] { grid-column: span 1 !important; }
    .why-card { padding: 24px; }
    .why-number { font-size: 1.75rem; }

    /* Projects mobile */
    .projects-grid { grid-template-columns: 1fr; }

    /* Area mobile */
    .area-content { grid-template-columns: 1fr; }
    .area-map { height: 220px; }

    /* Contact mobile */
    .contact-grid { grid-template-columns: 1fr; gap: 32px; }
    .form-row { grid-template-columns: 1fr; }
    .contact-form-wrapper { padding: 24px; }

    /* Footer mobile */
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }

    section { padding: 64px 0; }
    .specializations { padding: 72px 0; }
    .signature-numbers { gap: 32px; }
    .signature-value { font-size: clamp(3rem, 12vw, 4rem); }
    .pre-footer-cta { padding: 72px 0; }
}

/* ===== SIGNATURE MOMENT ===== */
.signature {
    padding: 100px 0;
    background: var(--blue-900);
    position: relative;
    overflow: hidden;
}
.signature::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 50%, rgba(232,168,0,0.06) 0%, transparent 60%);
}
.signature-content {
    position: relative;
    z-index: 1;
    text-align: center;
}
.signature-numbers {
    display: flex;
    justify-content: center;
    gap: 80px;
}
.signature-item {
    text-align: center;
}
.signature-value {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(4rem, 10vw, 7rem);
    font-weight: 700;
    color: var(--amber-400);
    line-height: 1;
    letter-spacing: -0.04em;
}
.signature-label {
    font-size: 1rem;
    color: rgba(255,255,255,0.6);
    margin-top: 12px;
    letter-spacing: 0.02em;
}

/* ===== PRE-FOOTER CTA ===== */
.pre-footer-cta {
    padding: 120px 0;
    background: var(--gray-50);
    text-align: center;
}
.pre-footer-cta h2 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.05;
    margin-bottom: 24px;
}
.pre-footer-cta p {
    font-size: 1.125rem;
    color: var(--gray-500);
    max-width: 520px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

/* ===== ANIMATIONS ===== */
.fade-in {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered children */
.stagger-children .fade-in:nth-child(1) { transition-delay: 0ms; }
.stagger-children .fade-in:nth-child(2) { transition-delay: 80ms; }
.stagger-children .fade-in:nth-child(3) { transition-delay: 160ms; }
.stagger-children .fade-in:nth-child(4) { transition-delay: 240ms; }
.stagger-children .fade-in:nth-child(5) { transition-delay: 320ms; }

/* Hero choreography */
.hero-content > * {
    opacity: 0;
    transform: translateY(24px);
    animation: heroReveal 0.8s var(--ease-out-expo) forwards;
}
.hero-content > *:nth-child(1) { animation-delay: 0.1s; }
.hero-content > *:nth-child(2) { animation-delay: 0.25s; }
.hero-content > *:nth-child(3) { animation-delay: 0.4s; }
.hero-content > *:nth-child(4) { animation-delay: 0.6s; }

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

/* Counter animation */
@keyframes counterPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}
.signature-value.animated {
    animation: counterPulse 0.6s var(--ease-out-expo);
}