/* ============================================
   OracleShellInstall Website - Shared Styles
   ============================================ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --red:#C74634;--red-glow:#e05a48;--red-dark:#a83a2b;
  --bg:#0a0a0e;--bg2:#111118;--bg3:#181822;--bg4:#1e1e2a;
  --card:#14141d;--card-hover:#1a1a26;
  --border:#232334;--border-light:#33334a;--border-red:rgba(199,70,52,.25);
  --text:#e8e6e3;--text-dim:#9a9aaa;--text-muted:#5a5a6e;
  --accent:#C74634;--accent2:#e8934a;--green:#3aba6a;--blue:#4a8fe8;--purple:#9a6aee;
  --font:'Noto Sans SC',system-ui,sans-serif;
  --mono:'JetBrains Mono','Fira Code',monospace;
  --display:'Orbitron',sans-serif;
  --r:10px;--r-lg:14px;--r-xl:20px;
  --max-w:1160px;
  --nav-h:64px;
  --term-bg:#1a1a24;
  --glow-sm:0 0 20px rgba(199,70,52,.15);
  --glow-md:0 0 40px rgba(199,70,52,.12);
}
/* Light theme */
[data-theme="light"]{
  --bg:#f4f4f7;--bg2:#eaeaef;--bg3:#e0e0e8;--bg4:#d6d6e0;
  --card:#fff;--card-hover:#f8f8fb;
  --border:#d0d0da;--border-light:#b8b8c8;--border-red:rgba(199,70,52,.2);
  --text:#1a1a2e;--text-dim:#5a5a70;--text-muted:#8a8a9e;
  --green:#1a8a4a;--blue:#2a6ac0;
  --term-bg:#1a1a24;
  --glow-sm:0 0 20px rgba(199,70,52,.08);
  --glow-md:0 0 40px rgba(199,70,52,.06);
}
/* Keep terminal areas dark in light mode */
[data-theme="light"] .cmd-code,
[data-theme="light"] .hero-term-body{color:#3aba6a}
[data-theme="light"] .cmd-box{background:#1a1a24;border-color:#2a2a38}
[data-theme="light"] .cmd-header{background:#2a2a34;border-color:#2a2a38}
[data-theme="light"] .cmd-code .cm-flag,[data-theme="light"] .hero-term-body .t-flag{color:#e8934a}
[data-theme="light"] .cmd-code .cm-val,[data-theme="light"] .hero-term-body .t-val{color:#4a8fe8}
[data-theme="light"] .cmd-code .cm-w,[data-theme="light"] .hero-term-body .t-w{color:#e8e6e3}
[data-theme="light"] .cmd-code .cm-cmt,[data-theme="light"] .cmd-code .cm-sl{color:#5a5a6e}
[data-theme="light"] .cmd-btn{color:#9a9aaa}
[data-theme="light"] .cmd-btn:hover{color:#e8e6e3;border-color:#C74634}
[data-theme="light"] .cmd-btn.copy-btn{color:#e05a48}
[data-theme="light"] .cmd-header .cmd-title{color:#9a9aaa}
[data-theme="light"] .hero-terminal{background:#1a1a24;border-color:#2a2a38}
[data-theme="light"] .hero-term-bar{background:#2a2a34;border-color:#2a2a38}
[data-theme="light"] .hero-term-title{color:#5a5a6e}
[data-theme="light"] .nav{background:rgba(244,244,247,.82);border-bottom-color:var(--border)}
[data-theme="light"] .nav-links a:hover{color:var(--text)}
[data-theme="light"] .nav-cta{color:#fff!important}
[data-theme="light"] .noise-overlay{opacity:.03}
html{scroll-behavior:smooth;font-size:15px;scroll-padding-top:74px}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.65;
  overflow-x:hidden;min-height:100vh;padding-top:var(--nav-h)}
a{color:var(--red);text-decoration:none;transition:color .2s}
a:hover{color:var(--red-glow)}
img{max-width:100%;display:block}

/* === NOISE TEXTURE OVERLAY === */
.noise-overlay{position:fixed;inset:0;z-index:99;pointer-events:none;opacity:.04;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat:repeat;background-size:256px 256px}

/* === SCROLLBAR === */
::-webkit-scrollbar{width:5px}
::-webkit-scrollbar-track{background:var(--bg2)}
::-webkit-scrollbar-thumb{background:var(--border-light);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--red)}

/* === NAV === */
.nav{position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:1000;
  background:rgba(10,10,14,.75);backdrop-filter:blur(20px) saturate(1.8);-webkit-backdrop-filter:blur(20px) saturate(1.8);
  border-bottom:1px solid rgba(255,255,255,.06);transition:box-shadow .3s,border-color .3s}
.nav.scrolled{box-shadow:0 4px 30px rgba(0,0,0,.4);border-bottom-color:var(--border)}
.nav-inner{max-width:var(--max-w);margin:0 auto;padding:0 24px;height:100%;
  display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:1.05rem;
  color:var(--text);letter-spacing:.5px;text-decoration:none;transition:opacity .2s}
.nav-logo:hover{opacity:.85}
.nav-logo .logo-icon{width:32px;height:32px;background:var(--red);border-radius:8px;
  display:flex;align-items:center;justify-content:center;font-family:var(--display);
  font-size:.8rem;font-weight:900;color:#fff;letter-spacing:-1px;
  box-shadow:0 2px 12px rgba(199,70,52,.3)}
.nav-logo span{color:var(--red)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{padding:8px 16px;font-size:.85rem;color:var(--text-dim);border-radius:8px;
  font-weight:500;transition:all .2s;text-decoration:none}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.05)}
[data-theme="light"] .nav-links a:hover{color:var(--text);background:rgba(0,0,0,.05)}
.nav-links a.active{color:var(--red);background:rgba(199,70,52,.12)}
.nav-links a.active::after{content:'';display:none}
.nav-icon{display:none;font-size:1.1rem;width:24px;text-align:center;flex-shrink:0}
.nav-cta{background:var(--red);color:#fff;padding:8px 20px;
  border-radius:8px;font-weight:600;font-size:.82rem;
  box-shadow:0 2px 12px rgba(199,70,52,.25);transition:all .25s}
.nav-cta:hover{background:var(--red-glow);color:#fff;box-shadow:0 4px 20px rgba(199,70,52,.35);
  transform:translateY(-1px)}
.nav-hamburger{display:none;background:none;border:none;color:var(--text);font-size:1.5rem;cursor:pointer;
  padding:6px;width:36px;height:36px;border-radius:8px;transition:all .2s;
  align-items:center;justify-content:center}
.nav-hamburger:hover{background:rgba(255,255,255,.08)}
[data-theme="light"] .nav-hamburger:hover{background:rgba(0,0,0,.06)}
.nav-actions{display:flex;align-items:center;gap:6px}
.nav-toggle{background:var(--bg3);border:1px solid var(--border);border-radius:8px;
  padding:6px 10px;font-size:.78rem;color:var(--text-dim);cursor:pointer;transition:all .2s;
  font-family:var(--font);display:flex;align-items:center;gap:4px;white-space:nowrap}
.nav-toggle:hover{border-color:var(--red);color:var(--text);box-shadow:var(--glow-sm)}
[data-theme="light"] .nav-toggle{background:var(--card)}

/* === CONTAINER === */
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-sm{padding:50px 0}

/* === GRADIENT TEXT UTILITY === */
.grad-text{background:linear-gradient(135deg,var(--red-glow),var(--accent2));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;color:transparent}

/* === COMMON TYPOGRAPHY === */
.section-eyebrow{font-size:.72rem;text-transform:uppercase;letter-spacing:3px;color:var(--red);
  font-weight:600;margin-bottom:12px;display:flex;align-items:center;gap:10px}
.section-eyebrow::before{content:'';width:24px;height:1px;background:var(--red)}
.section-center .section-eyebrow{justify-content:center}
.section-center .section-eyebrow::before{display:none}
.section-title{font-size:clamp(1.6rem,3.5vw,2.2rem);font-weight:900;color:var(--text);line-height:1.3;margin-bottom:12px}
.section-desc{font-size:1rem;color:var(--text-dim);max-width:600px;line-height:1.7;font-weight:300}
.section-center{text-align:center}
.section-center .section-desc{margin:0 auto}

/* === BUTTONS === */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:10px;
  font-size:.9rem;font-weight:600;cursor:pointer;transition:all .3s;border:none;
  font-family:var(--font);text-decoration:none;position:relative}
.btn-primary{background:var(--red);color:#fff;box-shadow:0 4px 20px rgba(199,70,52,.2)}
.btn-primary:hover{background:var(--red-glow);color:#fff;transform:translateY(-2px);
  box-shadow:0 8px 30px rgba(199,70,52,.35)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border-light)}
.btn-ghost:hover{border-color:var(--red);color:var(--text);transform:translateY(-2px);
  box-shadow:var(--glow-sm)}
.btn-sm{padding:8px 18px;font-size:.82rem;border-radius:8px}

/* === CARDS === */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:28px 24px;transition:all .35s cubic-bezier(.4,0,.2,1);position:relative}
.card:hover{border-color:rgba(199,70,52,.3);transform:translateY(-3px);
  box-shadow:0 12px 40px rgba(0,0,0,.15),var(--glow-sm)}
[data-theme="light"] .card:hover{box-shadow:0 12px 40px rgba(0,0,0,.08),0 0 20px rgba(199,70,52,.06)}

/* === TAGS === */
.tag{display:inline-flex;align-items:center;background:var(--bg3);border:1px solid var(--border);
  border-radius:6px;padding:5px 12px;font-size:.78rem;color:var(--text-dim);font-weight:500;transition:all .2s}
.tag:hover{border-color:var(--red);color:var(--text);box-shadow:var(--glow-sm)}
.tag-red{border-color:var(--border-red);color:var(--red-glow);background:rgba(199,70,52,.06)}

/* === GRID BACKGROUNDS === */
.bg-grid{position:relative}
.bg-grid::after{content:'';position:absolute;inset:0;
  background-image:linear-gradient(rgba(199,70,52,.03) 1px,transparent 1px),
  linear-gradient(90deg,rgba(199,70,52,.03) 1px,transparent 1px);
  background-size:50px 50px;pointer-events:none;z-index:0;
  mask-image:radial-gradient(ellipse 80% 60% at 50% 40%,black 30%,transparent 70%);
  -webkit-mask-image:radial-gradient(ellipse 80% 60% at 50% 40%,black 30%,transparent 70%)}
.bg-grid>*{position:relative;z-index:1}
.bg-glow-top{position:relative}
.bg-glow-top::before{content:'';position:absolute;top:-200px;left:50%;transform:translateX(-50%);
  width:800px;height:500px;background:radial-gradient(ellipse,rgba(199,70,52,.08),transparent 70%);
  pointer-events:none}

/* === SECTION DIVIDER === */
.section-divider{height:1px;border:none;margin:0;
  background:linear-gradient(90deg,transparent,var(--border-light) 20%,var(--border) 50%,var(--border-light) 80%,transparent)}

/* === FOOTER === */
.footer{border-top:none;padding:50px 0 40px;position:relative}
.footer::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(199,70,52,.3) 30%,rgba(199,70,52,.4) 50%,rgba(199,70,52,.3) 70%,transparent)}
.footer-inner{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .footer-logo{font-weight:900;font-size:1.1rem;color:var(--text);margin-bottom:8px}
.footer-brand .footer-logo span{color:var(--red)}
.footer-brand p{font-size:.82rem;color:var(--text-muted);line-height:1.6}
.footer-col h4{font-size:.78rem;text-transform:uppercase;letter-spacing:2px;color:var(--text-muted);
  font-weight:600;margin-bottom:14px}
.footer-col a{display:block;font-size:.85rem;color:var(--text-dim);padding:4px 0;transition:all .2s}
.footer-col a:hover{color:var(--red-glow);padding-left:4px}
.footer-bottom{border-top:1px solid var(--border);margin-top:30px;padding-top:20px;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-bottom span{font-size:.75rem;color:var(--text-muted)}

/* === ANIMATIONS === */
@keyframes fadeUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
@keyframes shimmer{0%{background-position:-200% 0}100%{background-position:200% 0}}
.anim-up{animation:fadeUp .7s cubic-bezier(.4,0,.2,1) both}
.anim-d1{animation-delay:.1s}.anim-d2{animation-delay:.2s}.anim-d3{animation-delay:.3s}.anim-d4{animation-delay:.4s}

/* === BACK TO TOP === */
.back-to-top{position:fixed;bottom:32px;right:32px;width:42px;height:42px;border-radius:50%;
  background:var(--red);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;
  justify-content:center;font-size:1.1rem;box-shadow:0 4px 20px rgba(199,70,52,.3);
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .3s;z-index:900}
.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{background:var(--red-glow);transform:translateY(-2px);box-shadow:0 6px 30px rgba(199,70,52,.4)}

/* === WECHAT CONSULT WIDGET === */
.wechat-fab{position:fixed;bottom:86px;right:32px;width:42px;height:42px;border-radius:50%;
  background:var(--card);color:var(--green);border:1px solid var(--border);cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:1.2rem;
  box-shadow:0 4px 20px rgba(0,0,0,.2);transition:all .3s;z-index:900}
.wechat-fab:hover{border-color:var(--green);box-shadow:0 4px 24px rgba(58,186,106,.25);transform:translateY(-2px)}
.wechat-fab.active{border-color:var(--green);background:var(--bg3)}
.wechat-fab svg{width:22px;height:22px;fill:currentColor}

.wechat-popup{position:fixed;bottom:140px;right:32px;width:280px;background:var(--card);
  border:1px solid var(--border);border-radius:var(--r-lg);padding:20px;z-index:901;
  box-shadow:0 12px 48px rgba(0,0,0,.35);opacity:0;visibility:hidden;
  transform:translateY(12px) scale(.95);transition:all .3s ease}
.wechat-popup.show{opacity:1;visibility:visible;transform:translateY(0) scale(1)}
.wechat-popup::after{content:'';position:absolute;bottom:-7px;right:20px;width:14px;height:14px;
  background:var(--card);border-right:1px solid var(--border);border-bottom:1px solid var(--border);
  transform:rotate(45deg)}
.wechat-popup-title{font-size:.82rem;color:var(--text-muted);margin-bottom:12px;text-align:center;letter-spacing:.5px}
.wechat-popup-qr{display:block;width:160px;height:auto;margin:0 auto 12px;border-radius:var(--r);
  border:1px solid var(--border)}
.wechat-popup-id{text-align:center;font-size:.8rem;color:var(--text-dim);font-family:var(--mono)}
.wechat-popup-hint{text-align:center;font-size:.75rem;color:var(--text-muted);margin-top:10px;
  padding-top:10px;border-top:1px solid var(--border);line-height:1.5}
.wechat-popup-close{position:absolute;top:8px;right:10px;background:none;border:none;color:var(--text-muted);
  cursor:pointer;font-size:.9rem;padding:4px;line-height:1;transition:color .2s}
.wechat-popup-close:hover{color:var(--text)}

/* === SELECTION === */
::selection{background:rgba(199,70,52,.25);color:var(--text)}

/* === FOCUS === */
:focus-visible{outline:2px solid var(--red);outline-offset:2px;border-radius:4px}

/* === RESPONSIVE === */
@media(max-width:900px){
  .footer-inner{grid-template-columns:1fr 1fr;gap:30px}
}
@media(max-width:768px){
  /* Solid nav background on mobile to prevent floating feel */
  .nav{background:var(--bg);backdrop-filter:none;-webkit-backdrop-filter:none}
  /* Hide desktop nav links + hamburger */
  .nav-links{display:none!important}
  .nav-hamburger{display:none!important}

  /* Bottom tab bar */
  .mobile-tabbar{display:flex!important;position:fixed;bottom:0;left:0;right:0;height:60px;
    background:var(--bg);border-top:1px solid var(--border);z-index:1000;
    padding:0 4px;padding-bottom:16px;padding-bottom:env(safe-area-inset-bottom,16px)}
  [data-theme="light"] .mobile-tabbar{background:var(--bg)}
  .mobile-tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:3px;text-decoration:none;color:var(--text-muted);font-size:.65rem;font-weight:500;
    transition:color .2s;padding:6px 2px;position:relative;-webkit-tap-highlight-color:transparent}
  .mobile-tabbar a .tab-icon{font-size:1.2rem;line-height:1}
  .mobile-tabbar a.active{color:var(--red)}
  .mobile-tabbar a.active::before{content:'';position:absolute;top:0;left:50%;transform:translateX(-50%);
    width:24px;height:2px;background:var(--red);border-radius:0 0 2px 2px}

  /* Adjust page bottom padding for tab bar */
  body{padding-bottom:60px}
  .footer{padding-bottom:80px}
  .back-to-top{bottom:80px;right:16px;width:38px;height:38px}
  .wechat-fab{bottom:134px;right:16px;width:38px;height:38px}
  .wechat-popup{bottom:186px;right:16px;width:260px;padding:16px}

  .footer-inner{grid-template-columns:1fr}
  .section{padding:50px 0}
  .btn{padding:10px 22px;font-size:.85rem}
  .nav-toggle{padding:5px 8px;font-size:.72rem}
  .section-eyebrow::before{width:16px}
}
/* Hide tabbar on desktop, show in mobile media query above */
.mobile-tabbar{display:none}

/* === macOS Terminal Code Blocks === */
.mac-term{background:var(--term-bg,#1a1a2e);border:1px solid var(--border);border-radius:var(--r-lg);
  overflow:hidden;margin:16px 0}
[data-theme="light"] .mac-term{background:#1a1a24;border-color:#2a2a38}
.mac-term-bar{display:flex;align-items:center;padding:10px 14px;background:rgba(255,255,255,.04);
  border-bottom:1px solid var(--border);gap:8px}
[data-theme="light"] .mac-term-bar{background:#2a2a34;border-color:#2a2a38}
.mac-term-bar .dot{width:12px;height:12px;border-radius:50%}
.mac-term-bar .dot-r{background:#ff5f57}
.mac-term-bar .dot-y{background:#febc2e}
.mac-term-bar .dot-g{background:#28c840}
.mac-term-bar .mac-term-title{flex:1;text-align:center;font-family:var(--mono);font-size:.72rem;
  color:var(--text-muted);opacity:.6;margin-right:44px}
.mac-term pre{margin:0!important;border:none!important;border-radius:0!important;background:transparent!important;
  padding:16px 20px;font-family:var(--mono);font-size:.82rem;line-height:1.7;color:var(--green,#3aba6a);overflow-x:auto}
[data-theme="light"] .mac-term pre{color:#3aba6a}
.mac-term pre code{background:none!important;border:none!important;padding:0!important;color:inherit!important;
  font-size:inherit!important}
.mac-term pre .kw{color:#c678dd}.mac-term pre .str{color:#98c379}
.mac-term pre .cmt{color:#5c6370;font-style:italic}.mac-term pre .num{color:#d19a66}
.mac-term pre .fn{color:#61afef}.mac-term pre .flag{color:var(--accent2,#e8934a)}
.mac-term pre .val{color:var(--blue,#4a8fe8)}