/* ============ VARIABLES ============ */
:root {
    --bg: #0F172A;
    --surface: #1E293B;
    --surface-2: #182238;
    --accent: #F59E0B;
    --accent-glow: rgba(245, 158, 11, 0.35);
    --headline: #B5B5B5;
    --headline-bright: #E2E8F0;
    --text: #B1B1B1;
    --text-muted: #8A93A6;
    --text-dim: #6B7280;
    --link: #60A5FA;
    --icon: #94A3B8;
    --btn-bg: #F59E0B;
    --btn-text: #0F172A;
    --border: rgba(255, 255, 255, 0.06);
    --border-strong: rgba(255, 255, 255, 0.12);
    --radius-xs: 10px;
    --radius-sm: 14px;
    --radius-md: 20px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --max-width: 1280px;
    --gutter: 32px;
    --shadow-card: 0 24px 60px -20px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--border);
    --shadow-float: 0 30px 80px -20px rgba(0, 0, 0, 0.7), 0 0 0 1px var(--border-strong);
    --shadow-accent: 0 18px 50px -12px rgba(245, 158, 11, 0.45);
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    font-size: 17px;
    line-height: 1.6;
    font-weight: 400;
    overflow-x: hidden;
    position: relative;
}

body.menu-open { overflow: hidden; position: fixed; width: 100%; }
body.menu-open .header { backdrop-filter: none !important; }

img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ============ BACKGROUND DECORATION ============ */
.bg-decor {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bg-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.35;
}

.bg-blob--1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.4), transparent 70%);
    top: -200px;
    right: -150px;
    animation: blobFloat 20s ease-in-out infinite;
}

.bg-blob--2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(96, 165, 250, 0.25), transparent 70%);
    bottom: 10%;
    left: -200px;
    animation: blobFloat 25s ease-in-out infinite reverse;
}

.bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

@keyframes blobFloat {
    0%,100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(40px, -30px) scale(1.05); }
    66% { transform: translate(-30px, 40px) scale(0.95); }
}

/* ============ LAYOUT ============ */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--gutter);
    position: relative;
    z-index: 1;
}

section {
    position: relative;
    padding: 120px 0;
    z-index: 1;
}

/* ============ TYPOGRAPHY ============ */
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 24px;
}

.eyebrow::before {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--accent);
}

.section-title {
    font-size: clamp(34px, 4.5vw, 56px);
    font-weight: 700;
    line-height: 1.08;
    letter-spacing: -0.025em;
    color: var(--headline-bright);
    margin-bottom: 20px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 580px;
    line-height: 1.6;
}

.accent { color: var(--accent); }

/* ============ BUTTONS ============ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 26px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all 0.3s var(--ease);
    white-space: nowrap;
    cursor: pointer;
    border: 1px solid transparent;
}

.btn--primary {
    background: var(--btn-bg);
    color: var(--btn-text);
    box-shadow: 0 8px 30px -8px var(--accent-glow);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 40px -8px var(--accent-glow);
}

.btn--ghost {
    background: rgba(255, 255, 255, 0.04);
    color: var(--headline-bright);
    border-color: var(--border-strong);
    backdrop-filter: blur(10px);
}

.btn--ghost:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn--lg { padding: 18px 36px; font-size: 16px; border-radius: var(--radius-md); }

/* ============ HEADER ============ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 18px 0;
    transition: all 0.4s var(--ease);
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: none;
    border-bottom: 1px solid transparent;
}

.header.is-scrolled {
    padding: 12px 0;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom-color: var(--border);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.logo {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--headline-bright);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo .plane {
    color: var(--accent);
    display: inline-block;
    transform: rotate(-15deg);
    transition: transform 0.5s var(--ease-spring);
}

.logo:hover .plane { transform: rotate(0deg) translateX(3px); }

.nav {
    display: flex;
    gap: 36px;
    margin-left: auto;
    margin-right: 32px;
}

.nav__link {
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    position: relative;
    transition: color 0.3s var(--ease);
    padding: 4px 0;
}

button.nav__link {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    font-weight: 500;
    line-height: inherit;
    color: var(--text);
    padding: 4px 0;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width 0.35s var(--ease);
}

.nav__link:hover { color: var(--headline-bright); }
.nav__link:hover::after { width: 100%; }

.nav__item {
    position: relative;
    display: flex;
    align-items: center;
}

.nav__trigger {
    background: none;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}

.nav__arrow { transition: transform 0.3s var(--ease); }
.nav__item:hover .nav__arrow { transform: rotate(180deg); }
.nav__item--dropdown:hover .nav__arrow { transform: rotate(180deg); }

.nav__dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    min-width: 220px;
    padding: 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: 0 16px 48px rgba(0,0,0,.4);
    backdrop-filter: blur(20px);
    z-index: 102;
}

.nav__item--dropdown:hover .nav__dropdown { display: block; }
.nav__item--dropdown { padding-bottom: 16px; margin-bottom: -16px; }

.nav__dropdown-link {
    display: block;
    padding: 10px 14px;
    font-size: 14px;
    color: var(--text);
    border-radius: var(--radius-sm);
    transition: all 0.2s var(--ease);
}

.nav__dropdown-link:hover {
    background: rgba(255,255,255,.05);
    color: var(--headline-bright);
}

.nav__dropdown-label {
    display: block;
    padding: 6px 14px 4px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-dim);
}

.header__cta { padding: 10px 20px; font-size: 14px; }

.header__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.header__toggle span {
    width: 22px;
    height: 2px;
    background: var(--headline-bright);
    border-radius: 2px;
    transition: all 0.3s var(--ease);
}

.header__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.header__toggle.is-open span:nth-child(2) { opacity: 0; }
.header__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ MOBILE MENU ============ */
@media (max-width: 768px) {
    .nav,
    .header__cta {
        display: none;
    }

    .header__toggle {
        display: flex;
    }

    .nav.is-open {
        display: flex;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        z-index: 999;
        flex-direction: column;
        background: rgba(15, 23, 42, 0.92);
        backdrop-filter: blur(20px);
        padding: 24px;
        gap: 4px;
        border-bottom: 1px solid var(--border);
        overflow-y: auto;
        margin: 0;
    }

    .nav.is-open .nav__item { width: 100%; }

    .nav.is-open .nav__trigger {
        width: 100%;
        justify-content: space-between;
        padding: 12px 0;
    }

    .nav.is-open .nav__dropdown {
        display: none;
        position: static;
        transform: none;
        background: rgba(255,255,255,.03);
        border: none;
        box-shadow: none;
        backdrop-filter: none;
        margin: 0 0 8px;
        padding: 4px 0 4px 12px;
        width: 100%;
    }

    .nav.is-open .nav__item.is-open .nav__dropdown { display: block; }

    .nav.is-open .nav__link:not(.nav__trigger) {
        padding: 12px 0;
        display: block;
    }
}

/* ============ FOOTER ============ */
.footer {
    border-top: 1px solid var(--border);
    padding: 80px 0 40px;
    position: relative;
    z-index: 1;
}

.footer__top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer__brand .logo { font-size: 24px; margin-bottom: 20px; }

.footer__tagline {
    font-size: 15px;
    color: var(--text-muted);
    max-width: 320px;
    line-height: 1.6;
}

.footer__col-title {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--headline-bright);
    margin-bottom: 20px;
}

.footer__col ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer__col a {
    font-size: 15px;
    color: var(--text);
    transition: color 0.3s var(--ease);
}

.footer__col a:hover { color: var(--accent); }

.footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid var(--border);
    font-size: 14px;
    color: var(--text-muted);
    flex-wrap: wrap;
    gap: 16px;
}

.footer__bottom-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.footer__bottom-links a:hover { color: var(--accent); }

/* ============ REVEAL ANIMATION ============ */
[data-reveal] {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

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

[data-reveal-delay="1"] { transition-delay: 0.1s; }
[data-reveal-delay="2"] { transition-delay: 0.2s; }
[data-reveal-delay="3"] { transition-delay: 0.3s; }
[data-reveal-delay="4"] { transition-delay: 0.4s; }

/* ============ CITY HERO ============ */
.city-hero__content {
    padding: 60px 0;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
    :root { --gutter: 24px; }
    section { padding: 90px 0; }
    .footer__top { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 768px) {
    :root { --gutter: 20px; }
    body { font-size: 16px; }
    section { padding: 70px 0; }
    .footer__top { grid-template-columns: 1fr; gap: 32px; }
    .footer__bottom { flex-direction: column; align-items: flex-start; }

    .city-hero {
        padding-top: 56px;
        margin-top: 0;
    }

    .city-hero__content {
        padding: 20px 0;
    }

    .city-hero__breadcrumb {
        margin-bottom: 6px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,*::before,*::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}