/* ============================================================
   Edge Crossing Systems — Site Stylesheet
   Color palette: cobalt blue #1a6fc4, dark #0d1117, gray #5a6472
   ============================================================ */

:root {
    --blue:        #1a6fc4;
    --blue-light:  #2e8de8;
    --blue-dark:   #0f4f8f;
    --blue-glow:   rgba(26, 111, 196, 0.18);
    --dark:        #0d1117;
    --dark-2:      #161b22;
    --dark-3:      #1e2530;
    --gray:        #5a6472;
    --gray-light:  #8b94a0;
    --gray-pale:   #d1d5db;
    --off-white:   #f4f6f9;
    --white:       #ffffff;
    --header-h:    84px;
}

/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: 'Open Sans', sans-serif;
    background: var(--dark);
    color: var(--white);
    line-height: 1.65;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main { flex: 1; }

img { max-width: 100%; display: block; }

a { color: var(--blue-light); text-decoration: none; transition: color .2s; }
a:hover { color: var(--white); }

ul { list-style: none; }

h1, h2, h3, h4 {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: .02em;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 4px;
    font-family: 'Rajdhani', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: .05em;
    text-transform: uppercase;
    cursor: pointer;
    transition: background .2s, color .2s, border-color .2s, box-shadow .2s;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--blue);
    color: var(--white);
    border-color: var(--blue);
}
.btn-primary:hover {
    background: var(--blue-light);
    border-color: var(--blue-light);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(26,111,196,.4);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,.5);
}
.btn-outline:hover {
    border-color: var(--white);
    color: var(--white);
}

.btn-large { padding: 16px 38px; font-size: 1.1rem; }

/* ── Header ───────────────────────────────────────────────── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(13, 17, 23, .96);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(26, 111, 196, .25);
    height: var(--header-h);
}

.header-inner {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo-link { display: flex; align-items: center; flex-shrink: 0; }

.logo {
    height: 66px;
    width: auto;
    object-fit: contain;
}

.main-nav ul {
    display: flex;
    gap: 8px;
    align-items: center;
}

.main-nav a {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--gray-light);
    padding: 8px 14px;
    border-radius: 4px;
    transition: color .2s, background .2s;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--white);
    background: var(--blue-glow);
}

.main-nav a.active { color: var(--blue-light); }

/* hamburger */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}
.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: transform .3s, opacity .3s;
}

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
    position: relative;
    min-height: calc(100vh - var(--header-h));
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    background:
        radial-gradient(ellipse 80% 60% at 50% 40%, rgba(26,111,196,.15) 0%, transparent 70%),
        linear-gradient(160deg, var(--dark) 0%, var(--dark-3) 100%);
}

/* animated grid background */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(26,111,196,.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(26,111,196,.07) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridDrift 20s linear infinite;
    pointer-events: none;
}

@keyframes gridDrift {
    from { background-position: 0 0; }
    to   { background-position: 60px 60px; }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 80% at 50% 100%, var(--dark) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 760px;
    padding: 40px 24px;
}

.hero-logo {
    width: clamp(220px, 36vw, 380px);
    margin: 0 auto 32px;
    filter: drop-shadow(0 4px 24px rgba(26, 111, 196, 0.35));
}

.hero-content h1 {
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    color: var(--white);
    margin-bottom: 20px;
    text-shadow: 0 2px 24px rgba(0,0,0,.6);
}

.hero-content h1 span { color: var(--blue-light); }

.hero-content p {
    font-size: clamp(1rem, 2.2vw, 1.25rem);
    color: var(--gray-pale);
    margin-bottom: 36px;
    max-width: 580px;
    margin-left: auto;
    margin-right: auto;
}

.hero-content .btn { margin: 6px 8px; }

/* ── Page Hero (inner pages) ──────────────────────────────── */
.page-hero {
    background:
        radial-gradient(ellipse 80% 80% at 50% 120%, rgba(26,111,196,.18) 0%, transparent 70%),
        linear-gradient(160deg, var(--dark-2) 0%, var(--dark-3) 100%);
    border-bottom: 1px solid rgba(26,111,196,.2);
    padding: 80px 24px 64px;
    text-align: center;
}

.page-hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--white);
    margin-bottom: 14px;
}

.page-hero p {
    font-size: 1.1rem;
    color: var(--gray-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ── Sections ─────────────────────────────────────────────── */
.section {
    padding: 96px 0;
}

.section-alt {
    background: var(--dark-2);
}

.section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(26,111,196,.3), transparent);
    margin: 0 48px;
}

.section-title {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    color: var(--white);
    text-align: center;
    margin-bottom: 12px;
}

.section-title::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: var(--blue);
    margin: 12px auto 0;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--gray-light);
    font-size: 1.05rem;
    max-width: 620px;
    margin: 0 auto 56px;
}

/* ── Service Cards (home) ─────────────────────────────────── */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: 28px;
}

.card {
    background: var(--dark-2);
    border: 1px solid rgba(26,111,196,.2);
    border-radius: 8px;
    padding: 36px 28px;
    transition: border-color .3s, transform .3s, box-shadow .3s;
}

.card:hover {
    border-color: rgba(26,111,196,.6);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(26,111,196,.15);
}

.card-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 20px;
}

.card h3 {
    font-size: 1.35rem;
    color: var(--white);
    margin-bottom: 12px;
}

.card p {
    color: var(--gray-light);
    font-size: .95rem;
    margin-bottom: 20px;
}

.card-link {
    font-family: 'Rajdhani', sans-serif;
    font-weight: 600;
    font-size: .95rem;
    letter-spacing: .04em;
    color: var(--blue-light);
    text-transform: uppercase;
}
.card-link:hover { color: var(--white); }

/* ── Products Section (home) ──────────────────────────────── */
.products-section {
    background: var(--dark-2);
}

.product-feature {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-top: 20px;
}

.product-image-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--white);
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 8px 40px rgba(0,0,0,.4);
    transition: box-shadow .3s;
}
.product-image-wrap:hover { box-shadow: 0 12px 50px rgba(26,111,196,.3); }

.product-logo { max-width: 280px; max-height: 280px; object-fit: contain; }

.product-details h3 {
    font-size: 2rem;
    color: var(--white);
    margin-bottom: 16px;
}
.product-details p {
    color: var(--gray-light);
    margin-bottom: 28px;
    font-size: 1rem;
}

/* ── Service Detail (services page) ──────────────────────── */
.service-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 72px;
    align-items: center;
}

.service-detail.reverse { direction: rtl; }
.service-detail.reverse > * { direction: ltr; }

.service-number {
    font-family: 'Rajdhani', sans-serif;
    font-size: 5rem;
    font-weight: 700;
    color: rgba(26,111,196,.15);
    line-height: 1;
    margin-bottom: -12px;
    user-select: none;
}

.service-text h2 {
    font-size: clamp(1.6rem, 2.5vw, 2.1rem);
    color: var(--white);
    margin-bottom: 16px;
}

.service-text p {
    color: var(--gray-light);
    margin-bottom: 24px;
    font-size: 1rem;
}

.service-list li {
    display: flex;
    align-items: baseline;
    gap: 10px;
    color: var(--gray-pale);
    padding: 6px 0;
    border-bottom: 1px solid rgba(255,255,255,.04);
    font-size: .97rem;
}

.service-list li::before {
    content: '—';
    color: var(--blue);
    flex-shrink: 0;
    font-weight: 700;
}

.service-graphic {
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: .85;
}

.service-graphic svg {
    max-width: 240px;
    width: 100%;
    filter: drop-shadow(0 0 16px rgba(26,111,196,.2));
}

/* ── Product Card Full (products page) ───────────────────── */
.product-card-full {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 64px;
    align-items: start;
    background: var(--dark-2);
    border: 1px solid rgba(26,111,196,.2);
    border-radius: 12px;
    padding: 56px 48px;
}

.product-card-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    border-radius: 10px;
    padding: 36px;
}

.product-card-logo img { max-width: 260px; object-fit: contain; }

.product-card-body h2 {
    font-size: 2.2rem;
    color: var(--white);
    margin-bottom: 4px;
}

.product-tagline {
    color: var(--blue-light);
    font-family: 'Rajdhani', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: .05em;
    margin-bottom: 20px;
}

.product-card-body p {
    color: var(--gray-light);
    margin-bottom: 16px;
}

.product-features {
    margin: 24px 0 32px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.pf-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--gray-pale);
    font-size: .97rem;
}

.pf-dot {
    width: 8px;
    height: 8px;
    background: var(--blue);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ── CTA Strip ────────────────────────────────────────────── */
.cta-strip {
    background: linear-gradient(135deg, var(--blue-dark) 0%, var(--dark-3) 100%);
    border-top: 1px solid rgba(26,111,196,.3);
    border-bottom: 1px solid rgba(26,111,196,.3);
    padding: 72px 24px;
    text-align: center;
}

.cta-strip h2 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    color: var(--white);
    margin-bottom: 12px;
}

.cta-strip p {
    color: var(--gray-pale);
    margin-bottom: 32px;
    font-size: 1.05rem;
}

/* ── Contact Page ─────────────────────────────────────────── */
.contact-section { padding: 96px 0; }

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 72px;
    align-items: start;
}

.contact-info h2 {
    font-size: 2rem;
    color: var(--white);
    margin-bottom: 16px;
}

.contact-info > p {
    color: var(--gray-light);
    margin-bottom: 36px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 28px;
}

.contact-icon { width: 32px; height: 32px; flex-shrink: 0; margin-top: 2px; }

.contact-label {
    display: block;
    font-family: 'Rajdhani', sans-serif;
    font-weight: 600;
    font-size: .85rem;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--blue-light);
    margin-bottom: 4px;
}

.contact-detail a {
    color: var(--gray-pale);
    font-size: 1rem;
}
.contact-detail a:hover { color: var(--white); }

.contact-note {
    margin-top: 32px;
    padding: 16px 20px;
    background: var(--dark-2);
    border-left: 3px solid var(--blue);
    border-radius: 0 6px 6px 0;
}
.contact-note p { color: var(--gray-light); font-size: .93rem; }

/* email CTA card */
.email-cta-card {
    background: var(--dark-2);
    border: 1px solid rgba(26,111,196,.25);
    border-radius: 10px;
    padding: 44px 40px;
    text-align: center;
    transition: border-color .3s;
}
.email-cta-card:hover { border-color: rgba(26,111,196,.5); }

.email-cta-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
}

.email-cta-card h3 {
    font-size: 1.6rem;
    color: var(--white);
    margin-bottom: 14px;
}

.email-cta-card p {
    color: var(--gray-light);
    margin-bottom: 28px;
    font-size: .97rem;
}

.email-copy-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
    flex-wrap: wrap;
}

code#emailAddr {
    font-family: monospace;
    font-size: .9rem;
    color: var(--gray-pale);
    background: var(--dark-3);
    padding: 6px 14px;
    border-radius: 4px;
    border: 1px solid rgba(255,255,255,.1);
    user-select: all;
}

.copy-btn {
    background: var(--dark-3);
    color: var(--blue-light);
    border: 1px solid rgba(26,111,196,.4);
    border-radius: 4px;
    padding: 6px 14px;
    font-family: 'Rajdhani', sans-serif;
    font-size: .9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .2s, color .2s;
}
.copy-btn:hover { background: var(--blue); color: var(--white); }

.copy-confirm {
    color: #4ade80;
    font-size: .85rem;
    margin-top: 8px;
    min-height: 1.2em;
    opacity: 0;
    transition: opacity .3s;
}
.copy-confirm.show { opacity: 1; }

/* ── Footer ───────────────────────────────────────────────── */
.site-footer {
    background: var(--dark-2);
    border-top: 1px solid rgba(26,111,196,.2);
    padding: 40px 24px;
}

.footer-inner {
    max-width: 1140px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 32px;
    align-items: center;
}

.footer-logo img {
    height: 52px;
    width: auto;
    object-fit: contain;
    opacity: .9;
}

.footer-info {
    text-align: center;
}

.footer-info p {
    color: var(--gray);
    font-size: .85rem;
    line-height: 1.8;
}

.footer-info a {
    color: var(--gray-light);
}
.footer-info a:hover { color: var(--blue-light); }

.footer-nav ul {
    display: flex;
    flex-direction: column;
    gap: 4px;
    align-items: flex-end;
}

.footer-nav a {
    font-family: 'Rajdhani', sans-serif;
    font-size: .9rem;
    font-weight: 600;
    letter-spacing: .05em;
    text-transform: uppercase;
    color: var(--gray);
}
.footer-nav a:hover { color: var(--blue-light); }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 900px) {
    .product-feature,
    .service-detail,
    .product-card-full {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .service-detail.reverse { direction: ltr; }

    .product-card-full { padding: 36px 28px; }
    .product-card-logo { max-width: 260px; margin: 0 auto; }

    .contact-grid { grid-template-columns: 1fr; gap: 48px; }

    .footer-inner {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 20px;
    }
    .footer-logo { display: flex; justify-content: center; }
    .footer-nav ul { align-items: center; flex-direction: row; flex-wrap: wrap; justify-content: center; gap: 12px; }
}

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

    .main-nav {
        display: none;
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        background: var(--dark-2);
        border-bottom: 1px solid rgba(26,111,196,.2);
        padding: 12px 0 16px;
    }
    .main-nav.open { display: block; }

    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }
    .main-nav a {
        display: block;
        padding: 12px 28px;
        border-radius: 0;
    }

    .section { padding: 64px 0; }

    .email-cta-card { padding: 32px 24px; }
}