:root {
    --color-bg: #0B1016; 
    --color-bg-alt: #161C24; 
    --color-text: #E8E4DC;
    --color-blue: #2D6DA3; 
    --color-blue-hover: #3A85C4;
    --font-heading: 'Playfair Display', serif;
    --font-mono: 'IBM Plex Mono', monospace;
    --font-body: 'Source Serif 4', serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { background-color: var(--color-bg); color: var(--color-text); font-family: var(--font-body); line-height: 1.6; overflow-x: hidden; }

/* ── Navigation ── */
nav { position: fixed; top: 0; width: 100%; z-index: 1000; padding: 18px 50px; display: flex; justify-content: space-between; align-items: center; transition: 0.3s; background: rgba(11, 16, 22, 0.95); backdrop-filter: blur(10px); }
.logo { font-family: var(--font-heading); font-weight: 900; font-size: 23px; color: #fff; text-decoration: none; text-transform: uppercase; letter-spacing: 1px; white-space: nowrap; }
.logo span { font-family: var(--font-mono); font-size: 11px; color: var(--color-blue); margin-left: 10px; font-weight: 400; }
.nav-links { display: flex; align-items: center; flex-wrap: nowrap; }
.nav-links a { font-family: var(--font-mono); color: #fff; text-decoration: none; font-size: 13px; margin-left: 30px; text-transform: uppercase; letter-spacing: 1px; transition: 0.3s; white-space: nowrap; }
.nav-links a:hover { color: var(--color-blue); }

/* ── Sidebar Inquiry ── */
.side-tab-container { position: fixed; top: 50%; right: 0; transform: translateY(-50%); z-index: 1001; display: flex; align-items: flex-start; height: auto; border: none; }
.inquiry-popout { background: var(--color-bg-alt); border: 0 solid var(--color-blue); width: 0; overflow: hidden; transition: 0.4s cubic-bezier(0.25, 1, 0.5, 1); display: flex; flex-direction: column; box-shadow: none; }
.inquiry-popout.active { width: 280px; border-width: 1px; box-shadow: -10px 0 30px rgba(0,0,0,0.5); }
.inquiry-header { padding: 15px; border-bottom: 1px solid #333; font-family: var(--font-mono); font-size: 10px; color: var(--color-blue); text-transform: uppercase; }
.inquiry-option { color: #fff; text-decoration: none; font-family: var(--font-body); font-size: 14px; padding: 20px 15px; border-bottom: 1px solid #222; transition: 0.3s; display: block; }
.inquiry-option:hover { background: var(--color-blue); color: #fff; }
.tab-trigger { background: var(--color-blue); color: #fff; padding: 16px 8px; writing-mode: vertical-rl; text-transform: uppercase; font-family: var(--font-mono); font-size: 11px; cursor: pointer; font-weight: bold; border-radius: 5px 0 0 5px; border: none; outline: none; }

/* ── Home Hero ── */
.hero { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 100px 24px 60px;
    background: linear-gradient(rgba(11,16,22,0.55), rgba(11,16,22,0.55)), url('https://images.unsplash.com/photo-1686358244616-aed9e9a1d827?q=80&w=2070&auto=format&fit=crop');
    background-size: cover; background-position: center; }
.hero h1 { font-size: clamp(28px, 5vw, 70px); line-height: 1.15; margin-bottom: 20px; max-width: 1100px; color: #fff; }
.hero p { font-size: clamp(15px, 2vw, 18px); color: var(--color-text); max-width: 750px; margin-bottom: 40px; opacity: 0.8; font-weight: 300; }

/* ── Home Cards ── */
.service-split { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; width: 100%; max-width: 1100px; }
.service-card { border: 1px solid rgba(255,255,255,0.1); padding: 40px 24px; background: rgba(0,0,0,0.6); backdrop-filter: blur(10px); transition: 0.4s; text-decoration: none; color: inherit; }
.service-card:hover { border-color: var(--color-blue); background: rgba(45, 109, 163, 0.1); transform: translateY(-5px); }
.service-card span { font-family: var(--font-mono); color: var(--color-blue); font-size: 11px; margin-bottom: 12px; display: block; text-transform: uppercase; letter-spacing: 2px; }
.service-card h2 { font-size: clamp(18px, 2.5vw, 26px); color: #fff; }

/* ── Global Forms ── */
.form-container { padding: 80px 24px; max-width: 1000px; margin: 0 auto; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.full-width { grid-column: span 2; }
input, select, textarea { width: 100%; background: var(--color-bg-alt); border: 1px solid #333; padding: 14px 16px; color: var(--color-text); font-family: var(--font-body); font-size: 15px; border-radius: 2px; outline: none; transition: 0.3s; }
input::placeholder, textarea::placeholder { color: rgba(232, 228, 220, 0.4); }
input:focus, select:focus, textarea:focus { border-color: var(--color-blue); }
textarea { resize: vertical; }
.mono-label { display: block; font-family: var(--font-mono); font-size: 10px; text-transform: uppercase; letter-spacing: 1px; color: var(--color-blue); margin-bottom: 8px; }
.captcha-box { display: flex; align-items: center; gap: 12px; background: var(--color-bg-alt); border: 1px solid #333; padding: 15px; border-radius: 2px; }
.btn-submit { width: 100%; background: var(--color-blue); color: #fff; border: none; padding: 18px 40px; font-family: var(--font-mono); font-size: 12px; text-transform: uppercase; letter-spacing: 2px; cursor: pointer; transition: 0.3s; border-radius: 2px; }
.btn-submit:hover { background: var(--color-blue-hover); }

/* ── Service Cards Grid ── */
.services-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; }
.svc-card { background: var(--color-bg-alt); border: 1px solid #222; padding: 36px 28px; transition: 0.3s; }
.svc-card:hover { border-color: var(--color-blue); transform: translateY(-4px); }
.svc-icon { font-family: var(--font-mono); font-size: 11px; color: var(--color-blue); text-transform: uppercase; letter-spacing: 2px; margin-bottom: 16px; }
.svc-card h3 { font-family: var(--font-heading); font-size: 20px; color: #fff; margin-bottom: 12px; }
.svc-card p { font-size: 14px; color: var(--color-text); opacity: 0.8; line-height: 1.8; }

/* ── Process Steps ── */
.process-step { display: flex; gap: 20px; align-items: flex-start; background: var(--color-bg); border: 1px solid #1e2530; padding: 20px 24px; }
.step-num { font-family: var(--font-mono); font-size: 11px; color: var(--color-blue); min-width: 28px; padding-top: 3px; }
.process-step strong { display: block; color: #fff; font-size: 15px; margin-bottom: 4px; }
.process-step p { font-size: 14px; color: var(--color-text); opacity: 0.75; line-height: 1.6; margin: 0; }

/* ── Project Cards ── */
.proj-card { background: var(--color-bg-alt); border: 1px solid #1e2530; border-top: 2px solid var(--color-blue); padding: 28px; transition: 0.3s; }
.proj-card:hover { border-color: var(--color-blue); }
.proj-type { font-family: var(--font-mono); font-size: 10px; color: var(--color-blue); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px; display: block; }
.proj-card h4 { font-family: var(--font-heading); font-size: 18px; color: #fff; margin-bottom: 10px; }
.proj-card p { font-size: 14px; color: var(--color-text); opacity: 0.8; line-height: 1.8; }

/* ══════════════════════════════
   RESPONSIVE — Tablet (≤900px)
══════════════════════════════ */
@media (max-width: 900px) {
    nav { padding: 14px 24px; }
    .logo span { display: none; }
    .nav-links a { margin-left: 18px; font-size: 11px; }
    .services-grid { grid-template-columns: 1fr 1fr; }
}

/* ══════════════════════════════
   RESPONSIVE — Mobile (≤680px)
══════════════════════════════ */
@media (max-width: 680px) {

    /* Nav — stack logo above links */
    nav { padding: 12px 16px; flex-direction: column; align-items: flex-start; gap: 8px; }
    .logo { font-size: 18px; }
    .logo span { display: none; }
    .nav-links { width: 100%; justify-content: flex-start; flex-wrap: wrap; gap: 4px 0; }
    .nav-links a { margin-left: 0; margin-right: 16px; font-size: 10px; letter-spacing: 0.5px; }

    /* Hero */
    .hero { padding: 140px 20px 60px; min-height: 100svh; }
    .hero h1 { font-size: clamp(26px, 8vw, 42px); line-height: 1.2; }
    .hero p { font-size: 15px; margin-bottom: 30px; }
    .service-split { grid-template-columns: 1fr; gap: 16px; }
    .service-card { padding: 28px 20px; }
    .service-card h2 { font-size: 20px; }

    /* Sidebar inquiry — smaller on mobile */
    .tab-trigger { font-size: 9px; padding: 12px 6px; }
    .inquiry-popout.active { width: 220px; }

    /* Inner page headers */
    header { padding-top: 120px !important; }

    /* About Us two-column grid → single column */
    div[style*="grid-template-columns:1fr 1fr"],
    div[style*="grid-template-columns: 1fr 1fr"] {
        display: block !important;
    }
    div[style*="grid-template-columns:1fr 1fr"] > div,
    div[style*="grid-template-columns: 1fr 1fr"] > div {
        margin-bottom: 24px;
    }

    /* Three-column "Who We Work With" → single column */
    div[style*="grid-template-columns:1fr 1fr 1fr"],
    div[style*="grid-template-columns: 1fr 1fr 1fr"] {
        display: block !important;
    }
    div[style*="grid-template-columns:1fr 1fr 1fr"] > div,
    div[style*="grid-template-columns: 1fr 1fr 1fr"] > div {
        margin-bottom: 20px;
    }

    /* Service/project card grids */
    .services-grid { grid-template-columns: 1fr; gap: 16px; }
    .svc-card { padding: 24px 20px; }
    .proj-card { padding: 20px; }

    /* Forms */
    .form-container { padding: 50px 16px; }
    .form-grid { grid-template-columns: 1fr; gap: 14px; }
    .full-width { grid-column: span 1; }

    /* Section padding reduction */
    section[style*="padding:80px"],
    section[style*="padding: 80px"] { padding-top: 50px !important; padding-bottom: 50px !important; }
    section[style*="padding:90px"],
    section[style*="padding: 90px"] { padding-top: 50px !important; padding-bottom: 50px !important; }

    /* Font size reductions for inline headings */
    h2[style*="font-size:42px"], h2[style*="font-size: 42px"] { font-size: 28px !important; }
    h2[style*="font-size:38px"], h2[style*="font-size: 38px"] { font-size: 26px !important; }
    h2[style*="font-size:36px"], h2[style*="font-size: 36px"] { font-size: 24px !important; }
    h1[style*="font-size:64px"], h1[style*="font-size: 64px"] { font-size: 36px !important; }
    h1[style*="font-size:54px"], h1[style*="font-size: 54px"] { font-size: 32px !important; }
    p[style*="font-size:22px"], p[style*="font-size: 22px"] { font-size: 17px !important; }
    p[style*="font-size:18px"], p[style*="font-size: 18px"] { font-size: 15px !important; }

    /* Max-width containers — full width with padding */
    div[style*="max-width:1100px"],
    div[style*="max-width: 1100px"],
    div[style*="max-width:1000px"],
    div[style*="max-width: 1000px"],
    div[style*="max-width:800px"],
    div[style*="max-width: 800px"],
    div[style*="max-width:850px"],
    div[style*="max-width: 850px"] {
        max-width: 100% !important;
        padding-left: 16px !important;
        padding-right: 16px !important;
    }
}