/* ===========================================
   Gamma Consulting — styles.css (v2)
   Palette: Deep Navy / Electric Cyan / Slate Grey
   Type:    IBM Plex Sans + Inter + IBM Plex Mono
   =========================================== */

:root {
    --navy:        #0A192F;
    --navy-2:      #0F2240;
    --surface:     #112240;
    --surface-2:   #1B2D4E;
    --cyan:        #64FFDA;
    --cyan-dim:    #4FD1B5;
    --slate:       #8892B0;
    --slate-light: #A8B2D1;
    --slate-lighter: #CCD6F6;
    --light:       #E6F1FF;

    --border:        rgba(136, 146, 176, 0.16);
    --border-strong: rgba(136, 146, 176, 0.32);

    --grad:    linear-gradient(135deg, var(--cyan) 0%, #56C9E0 60%, #7FB3FF 100%);
    --grad-bg: radial-gradient(ellipse 600px 400px at 20% 0%, rgba(100, 255, 218, 0.10), transparent 60%),
               radial-gradient(ellipse 500px 400px at 80% 10%, rgba(100, 200, 255, 0.06), transparent 60%),
               radial-gradient(ellipse 700px 500px at 50% 100%, rgba(127, 179, 255, 0.06), transparent 60%);

    --radius-sm: 8px;
    --radius:    14px;
    --radius-lg: 22px;

    --shadow-sm:   0 2px 8px rgba(0, 0, 0, 0.25);
    --shadow:      0 12px 40px rgba(0, 0, 0, 0.35);
    --shadow-glow: 0 0 60px rgba(100, 255, 218, 0.18);

    --max-w: 1180px;

    --font-display: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --font-body:    'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    --font-mono:    'IBM Plex Mono', ui-monospace, monospace;

    --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font-body);
    background: var(--navy);
    color: var(--slate-lighter);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }

.bg-grid {
    position: fixed; inset: 0; z-index: -2;
    background-image:
        linear-gradient(rgba(136, 146, 176, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(136, 146, 176, 0.04) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse at top, black 0%, transparent 70%);
}
.bg-gradient {
    position: fixed; inset: 0; z-index: -1; pointer-events: none;
    background: var(--grad-bg);
}

.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(10, 25, 47, 0.75);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.nav.scrolled { border-bottom-color: var(--border); background: rgba(10, 25, 47, 0.92); }
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.01em;
    color: var(--light);
}
.brand-mark {
    display: inline-block;
    width: 36px; height: 36px;
    object-fit: contain;
    flex-shrink: 0;
}
.brand-accent { color: var(--cyan); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-links a {
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 0.95rem;
    color: var(--slate-light);
    transition: color 0.15s var(--ease), background 0.15s var(--ease);
}
.nav-links a:hover { color: var(--cyan); background: rgba(100, 255, 218, 0.06); }
.nav-cta {
    background: var(--cyan);
    color: var(--navy) !important;
    font-weight: 600;
}
.nav-cta:hover { background: var(--cyan-dim) !important; color: var(--navy) !important; filter: brightness(1.05); }
.lang-switch {
    margin-left: 6px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    border: 1px solid var(--border);
    padding: 6px 10px !important;
}

.nav-toggle {
    display: none;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    width: 40px; height: 40px;
    padding: 0;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
}
.nav-toggle span {
    display: block;
    width: 18px; height: 2px;
    background: var(--light);
    border-radius: 2px;
}

.hero {
    padding: 100px 0 80px;
    position: relative;
}
.hero-inner { max-width: 900px; }
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.82rem;
    color: var(--cyan);
    font-family: var(--font-mono);
    background: rgba(100, 255, 218, 0.05);
    margin-bottom: 28px;
    letter-spacing: 0.02em;
}
.eyebrow .dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 12px var(--cyan);
}
.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 5vw + 1rem, 4.2rem);
    line-height: 1.05;
    letter-spacing: -0.03em;
    font-weight: 700;
    margin: 0 0 24px;
    color: var(--light);
}
.grad {
    background: var(--grad);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}
.hero-sub {
    font-size: clamp(1rem, 0.7vw + 0.9rem, 1.2rem);
    color: var(--slate-light);
    max-width: 700px;
    margin: 0 0 36px;
}
.hero-cta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 56px;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 22px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid transparent;
    transition: transform 0.15s var(--ease), filter 0.15s var(--ease), background 0.15s var(--ease), border-color 0.15s var(--ease);
    cursor: pointer;
    font-family: var(--font-body);
}
.btn-primary {
    background: var(--cyan);
    color: var(--navy);
    box-shadow: var(--shadow-glow);
}
.btn-primary:hover { transform: translateY(-1px); background: var(--cyan-dim); }
.btn-ghost {
    background: rgba(100, 255, 218, 0.04);
    border-color: var(--cyan);
    color: var(--cyan);
}
.btn-ghost:hover { background: rgba(100, 255, 218, 0.10); }
.btn-lg { padding: 16px 28px; font-size: 1.02rem; }

.hero-meta {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    border-top: 1px solid var(--border);
    padding-top: 28px;
}
.meta-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.meta-item strong {
    font-family: var(--font-display);
    font-size: 1.02rem;
    color: var(--light);
    font-weight: 600;
}
.meta-item span {
    font-size: 0.85rem;
    color: var(--slate);
}

.section {
    padding: 100px 0;
    position: relative;
}
.section-alt {
    background: linear-gradient(180deg, transparent 0%, rgba(136, 146, 176, 0.025) 50%, transparent 100%);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.section-head {
    max-width: 800px;
    margin-bottom: 64px;
}
.section-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--cyan);
    letter-spacing: 0.06em;
    margin-bottom: 16px;
    text-transform: uppercase;
}
.section h2 {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw + 0.8rem, 2.8rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin: 0 0 16px;
    font-weight: 700;
    color: var(--light);
}
.section-lead {
    color: var(--slate-light);
    font-size: 1.1rem;
    margin: 0;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
}
.cards-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.card {
    position: relative;
    padding: 32px 28px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
    overflow: hidden;
}
.card:hover {
    transform: translateY(-3px);
    border-color: var(--cyan);
    background: var(--surface-2);
}
.card-featured {
    border-color: rgba(100, 255, 218, 0.32);
    box-shadow: 0 0 0 1px rgba(100, 255, 218, 0.10), 0 20px 60px rgba(100, 255, 218, 0.08);
}
.card-accent { border-color: rgba(100, 255, 218, 0.24); }
.card-icon {
    width: 48px; height: 48px;
    display: grid; place-items: center;
    background: rgba(100, 255, 218, 0.10);
    border: 1px solid rgba(100, 255, 218, 0.30);
    border-radius: 12px;
    color: var(--cyan);
    margin-bottom: 20px;
}
.card-icon svg { width: 24px; height: 24px; }
.card h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin: 0 0 10px;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--light);
}
.card-sub {
    color: var(--slate);
    font-weight: 400;
    font-size: 0.95rem;
}
.card p {
    color: var(--slate-light);
    font-size: 0.95rem;
    margin: 0 0 18px;
}
.card-list {
    list-style: none;
    padding: 0;
    margin: 0;
    border-top: 1px solid var(--border);
    padding-top: 16px;
}
.card-list li {
    position: relative;
    padding: 6px 0 6px 22px;
    font-size: 0.92rem;
    color: var(--slate-light);
}
.card-list li::before {
    content: "";
    position: absolute;
    left: 0; top: 13px;
    width: 12px; height: 2px;
    background: var(--cyan);
    border-radius: 2px;
}
.card-list strong { color: var(--light); }

.badge {
    position: absolute;
    top: 18px; right: 18px;
    padding: 4px 10px;
    background: rgba(100, 255, 218, 0.12);
    color: var(--cyan);
    border: 1px solid rgba(100, 255, 218, 0.32);
    font-size: 0.72rem;
    font-family: var(--font-mono);
    border-radius: 100px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.stack {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 880px;
}
.stack-layer {
    padding: 22px 26px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--cyan);
    border-radius: var(--radius);
    display: grid;
    grid-template-columns: 200px 1fr;
    align-items: center;
    gap: 30px;
    transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}
.stack-layer:hover {
    transform: translateX(4px);
    border-color: var(--cyan-dim);
    border-left-color: var(--cyan);
}
.stack-label {
    display: flex;
    align-items: center;
    gap: 12px;
}
.layer-num {
    font-family: var(--font-mono);
    color: var(--cyan);
    font-size: 0.85rem;
    padding: 4px 8px;
    border: 1px solid rgba(100, 255, 218, 0.32);
    border-radius: 6px;
    background: rgba(100, 255, 218, 0.04);
}
.stack-label strong {
    font-family: var(--font-display);
    color: var(--light);
    font-size: 1.05rem;
    font-weight: 600;
}
.stack-layer p {
    margin: 0;
    color: var(--slate-light);
    font-size: 0.92rem;
}

.cases {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
}
.case {
    padding: 30px 28px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}
.case:hover { transform: translateY(-3px); border-color: var(--cyan); }
.case-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--cyan);
    margin-bottom: 14px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.case h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin: 0 0 16px;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--light);
}
.case-block {
    margin-bottom: 14px;
    padding-left: 14px;
    border-left: 2px solid var(--border-strong);
}
.case-block:last-child { margin-bottom: 0; }
.case-block-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--cyan);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 4px;
}
.case-block p {
    color: var(--slate-light);
    font-size: 0.92rem;
    margin: 0;
}
.case-block em {
    color: var(--slate);
    font-style: italic;
    font-size: 0.88rem;
}
.cases-note {
    margin-top: 32px;
    font-size: 0.9rem;
    color: var(--slate);
    text-align: center;
}
.cases-note a { color: var(--cyan); }
.cases-note a:hover { text-decoration: underline; }

.about-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 80px;
    align-items: start;
}
.about-grid p { color: var(--slate-light); font-size: 1rem; }
.about-grid strong { color: var(--cyan); font-weight: 600; }
.values {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.values li {
    padding: 22px 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    position: relative;
}
.value-num {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--cyan);
    margin-bottom: 6px;
    letter-spacing: 0.06em;
}
.values strong {
    display: block;
    font-family: var(--font-display);
    font-size: 1.05rem;
    margin-bottom: 4px;
    font-weight: 600;
    color: var(--light);
}
.values p {
    margin: 0;
    color: var(--slate-light);
    font-size: 0.92rem;
}

.contact-inner {
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
}
.contact-inner h2 { margin-bottom: 18px; }
.contact-inner .btn { margin: 24px 0 18px; }
.contact-meta {
    color: var(--slate);
    font-size: 0.85rem;
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--slate);
}
.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}
.footer-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--slate-light);
    font-family: var(--font-display);
    font-weight: 600;
}
.footer-brand .brand-mark {
    width: 28px; height: 28px;
}
.footer-meta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.footer-domain {
    font-family: var(--font-mono);
    color: var(--cyan);
}

@media (max-width: 860px) {
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .stack-layer { grid-template-columns: 1fr; gap: 12px; }
    .section { padding: 70px 0; }
    .hero { padding: 70px 0 60px; }
}

@media (max-width: 680px) {
    .nav-links { display: none; }
    .nav-toggle { display: inline-flex; }

    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0; right: 0;
        background: rgba(10, 25, 47, 0.98);
        backdrop-filter: blur(14px);
        padding: 18px 24px;
        border-bottom: 1px solid var(--border);
        gap: 4px;
        align-items: stretch;
    }
    .nav-links.open a { padding: 12px 14px; }

    .hero-title { font-size: 2.4rem; }
    .hero-cta .btn { width: 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
    html { scroll-behavior: auto; }
}

:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 3px;
    border-radius: 6px;
}

[dir="rtl"] .stack-layer { border-left: none; border-right: 3px solid var(--cyan); }
[dir="rtl"] .case-block { border-left: none; border-right: 2px solid var(--border-strong); padding-left: 0; padding-right: 14px; }
[dir="rtl"] .card-list li { padding-left: 0; padding-right: 22px; }
[dir="rtl"] .card-list li::before { left: auto; right: 0; }
[dir="rtl"] .stack-layer:hover { transform: translateX(-4px); }