/* ============================================================
   VRUSHYAM SITE SHELL — theme vars, nav & footer
   (extracted from index.html so all pages match exactly)
   ============================================================ */
:root {
    --accent: #00e5a0;
    --accent2: #00b8d9;
    --accent3: #7c3aed;
    --bg: #0a0f1e;
    --bg2: #0d1529;
    --bg3: #111d35;
    --card: #0f1b2d;
    --card2: #162038;
    --border: rgba(0, 229, 160, 0.15);
    --text: #e8f4f8;
    --text2: #8baac0;
    --text3: #4a6880;
    --nav-bg: rgba(10, 15, 30, 0.92);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --glow: 0 0 40px rgba(0, 229, 160, 0.15);
    --section-overlay: rgba(9, 13, 24, 0.86);
    --section-overlay-soft: rgba(9, 13, 24, 0.6);
}

[data-theme="light"] {
    --bg: #f0f4f8;
    --bg2: #e8eef5;
    --bg3: #dde5ef;
    --card: #ffffff;
    --card2: #f5f8fc;
    --border: rgba(0, 150, 100, 0.2);
    --text: #0d1f35;
    --text2: #3a5570;
    --text3: #8aaacc;
    --nav-bg: rgba(240, 244, 248, 0.95);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    --glow: 0 0 40px rgba(0, 180, 120, 0.1);
    --section-overlay: rgba(240, 244, 248, 0.88);
    --section-overlay-soft: rgba(240, 244, 248, 0.65);
}

* { margin: 0; padding: 0; box-sizing: border-box }
html { scroll-behavior: smooth }
html, body { width: 100%; max-width: 100%; overflow-x: hidden; }
body {
    font-family: 'Poppins', sans-serif;
    background: var(--bg);
    color: var(--text);
    transition: background 0.4s, color 0.4s;
    overflow-x: hidden;
    font-size: 14px
}
body.nav-open { overflow: hidden; }

/* ── NAV ── */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 0 5%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 90px;
    transition: background 0.4s
}
.logo {
    font-family: 'Poppins', sans-serif;
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text);
    text-decoration: none
}
.logo img { height: 60px; width: 140px; margin-top: 15px; display: block; }
.logo span { color: var(--accent) }
.nav-links { display: flex; gap: 1.8rem; list-style: none }
.nav-links a {
    font-size: .82rem; font-weight: 500; color: var(--text2);
    text-decoration: none; letter-spacing: .03em; transition: color .25s;
    position: relative; padding-bottom: 4px; cursor: pointer
}
.nav-links a::after {
    content: ''; position: absolute; bottom: 0; left: 0;
    width: 0; height: 2px; background: var(--accent); transition: width .25s
}
.nav-links a:hover, .nav-links a.active { color: var(--text) }
.nav-links a:hover::after, .nav-links a.active::after { width: 100% }
.nav-right { display: flex; align-items: center; margin-left: auto; gap: .8rem }
.theme-toggle {
    background: var(--card); border: 1px solid var(--border); border-radius: 50px;
    padding: 5px 12px; cursor: pointer; font-size: .75rem; color: var(--text2);
    display: flex; align-items: center; gap: 5px; transition: all .3s
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent) }
.btn-nav {
    background: var(--accent); color: #000; padding: 7px 18px; border-radius: 50px;
    font-weight: 700; font-size: .8rem; border: none; cursor: pointer;
    letter-spacing: .02em; transition: all .3s; text-decoration: none; display: inline-block
}
.btn-nav:hover { background: var(--accent2); transform: translateY(-1px); box-shadow: 0 4px 20px rgba(0, 229, 160, 0.4) }

@media (min-width: 769px) {
    nav { display: grid; grid-template-columns: minmax(150px, 1fr) auto minmax(150px, 1fr); justify-content: normal; }
    nav > .logo { justify-self: start; }
    .nav-links { justify-self: center; align-items: center; }
    .nav-right { margin-left: 0; justify-self: end; justify-content: flex-end; }
}

.hamburger {
    display: none; flex-direction: column; justify-content: space-between;
    width: 26px; height: 19px; cursor: pointer; background: none; border: none;
    padding: 0; z-index: 1100; flex-shrink: 0;
}
.hamburger span {
    display: block; width: 100%; height: 2px; background: var(--text);
    border-radius: 2px; transition: all 0.3s ease;
}
.hamburger.open span:nth-child(1) { transform: translateY(8.5px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-8.5px) rotate(-45deg); }

@media (max-width: 768px) {
    nav { padding: 0 4%; height: 68px; }
    .logo img { height: 44px; width: 105px; margin-top: 8px; }
    .nav-right { display: flex; align-items: center; gap: 0.5rem; }
    .hamburger { display: flex; order: 3; }
    .btn-nav { display: none !important; }
    .theme-toggle { order: 2; padding: 6px 9px; }
    .theme-toggle span { display: none; }
    .nav-links {
        display: flex !important; flex-direction: column;
        position: fixed; top: 68px; left: 0; right: 0;
        background: var(--nav-bg);
        backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
        border-bottom: 2px solid var(--accent);
        padding: 0.5rem 5%; gap: 0;
        transform: translateY(-110%); opacity: 0; pointer-events: none;
        transition: transform 0.33s cubic-bezier(.4,0,.2,1), opacity 0.28s ease;
        z-index: 998; box-shadow: 0 8px 32px rgba(0,0,0,0.3);
        width: 100%; max-width: 100vw; overflow-x: hidden;
    }
    .nav-links.mobile-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .nav-links li { border-bottom: 1px solid var(--border); }
    .nav-links li:last-child { border-bottom: none; }
    .nav-links a { display: block; padding: 0.9rem 0; font-size: 0.95rem; font-weight: 600; color: var(--text) !important; }
    .nav-links a::after { display: none; }
}

/* ── FOOTER ── */
footer { background: var(--bg2); border-top: 1px solid var(--border); padding: 2.8rem 5% 1.8rem }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2.5rem; margin-bottom: 2.5rem }
.footer-brand .logo { font-size: 1.1rem }
.footer-brand p { color: var(--text2); font-size: .82rem; line-height: 1.7; margin-top: .7rem; max-width: 220px }
.footer-col h4 { font-family: 'Poppins', sans-serif; font-weight: 700; margin-bottom: .9rem; font-size: .88rem }
.footer-col ul { list-style: none }
.footer-col ul li { margin-bottom: .5rem }
.footer-col ul li a { color: var(--text2); text-decoration: none; font-size: .82rem; transition: color .25s; cursor: pointer }
.footer-col ul li a:hover { color: var(--accent) }
.footer-bottom {
    border-top: 1px solid var(--border); padding-top: 1.3rem;
    display: flex; justify-content: space-between; align-items: center;
    font-size: .76rem; color: var(--text3)
}
.footer-socials { display: flex; gap: .6rem }
.footer-socials a {
    width: 32px; height: 32px; border-radius: 50%; border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    font-size: .85rem; color: var(--text2); text-decoration: none; transition: all .25s
}
.footer-socials a:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px) }
@media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 1.8rem }
    .footer-bottom { flex-direction: column; gap: .8rem; text-align: center }
}