/* ============================================================
   OptiSuite — style.css
   Design: dark premium, non-generic, no frameworks
   ============================================================ */

/* ── Variables ─────────────────────────────────────── */
:root {
  --bg:          #07070F;
  --bg-surface:  #0D0D1B;
  --bg-raised:   #12121F;
  --bg-hover:    #181828;
  --border:      rgba(255,255,255,0.07);
  --border-mid:  rgba(255,255,255,0.12);
  --primary:     #5B8DEF;
  --primary-dim: rgba(91,141,239,0.15);
  --purple:      #7C5CEF;
  --win:         #0EA5E9;
  --win-dim:     rgba(14,165,233,0.15);
  --android:     #3DDC84;
  --android-dim: rgba(61,220,132,0.12);
  --red:         #EF5B5B;
  --text:        #EEEEF8;
  --text-2:      #9898B8;
  --text-3:      #5A5A7A;
  --radius:      12px;
  --radius-lg:   20px;
  --shadow:      0 2px 24px rgba(0,0,0,0.5);
  --transition:  0.2s cubic-bezier(0.4,0,0.2,1);
  --font:        'Inter', system-ui, -apple-system, sans-serif;
}

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

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
ul, ol { list-style: none; }

/* ── Network canvas background ──────────────────────── */
#networkCanvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.35;
}

/* Ensure all content sits above canvas */
#nav, .page, footer, .mobile-menu { position: relative; z-index: 1; }

/* ── Scrollbar ──────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #2A2A42; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #3A3A58; }

/* ── Typography ─────────────────────────────────────── */
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; letter-spacing: -0.03em; line-height: 1.1; }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 600; letter-spacing: -0.02em; line-height: 1.2; }
h3 { font-size: 1.1rem; font-weight: 600; letter-spacing: -0.01em; }
p  { color: var(--text-2); line-height: 1.7; }

/* ── Layout helpers ─────────────────────────────────── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }

/* ── Gradient text ──────────────────────────────────── */
.grad { background: linear-gradient(135deg, #fff 30%, var(--primary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.grad-win { background: linear-gradient(135deg, #fff 20%, var(--win)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.grad-android { background: linear-gradient(135deg, #fff 20%, var(--android)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

/* ── Badges ─────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px; border-radius: 100px; font-size: 0.72rem;
  font-weight: 500; letter-spacing: 0.03em; text-transform: uppercase;
  border: 1px solid transparent;
}
.badge-win    { background: var(--win-dim);     color: var(--win);     border-color: rgba(14,165,233,0.25); }
.badge-android{ background: var(--android-dim); color: var(--android); border-color: rgba(61,220,132,0.25); }
.badge-web    { background: rgba(124,92,239,.15); color: var(--purple); border-color: rgba(124,92,239,.3); }
.badge-new    { background: rgba(91,141,239,.15); color: var(--primary); border-color: rgba(91,141,239,.3); }
.badge-soon   { background: rgba(255,255,255,.05); color: var(--text-3); border-color: var(--border); }

/* ── Buttons ─────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: var(--radius);
  font-size: 0.9rem; font-weight: 500; transition: var(--transition);
}
.btn-primary {
  background: var(--primary); color: #fff;
  box-shadow: 0 0 20px rgba(91,141,239,0.3);
}
.btn-primary:hover { background: #6F9EF5; transform: translateY(-1px); box-shadow: 0 0 30px rgba(91,141,239,0.45); }

.btn-ghost {
  background: transparent; color: var(--text-2);
  border: 1px solid var(--border-mid);
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--text); border-color: rgba(255,255,255,0.2); }

.btn-win { background: var(--win-dim); color: var(--win); border: 1px solid rgba(14,165,233,0.3); }
.btn-win:hover { background: rgba(14,165,233,0.25); }

.btn-sm { padding: 7px 14px; font-size: 0.82rem; border-radius: 8px; }

/* ── Navigation ──────────────────────────────────────── */
#nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 60px;
  display: flex; align-items: center;
  border-bottom: 1px solid transparent;
  transition: background 0.3s, border-color 0.3s;
}
#nav.scrolled {
  background: rgba(7,7,15,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-color: var(--border);
}
.nav-inner {
  width: 100%; max-width: 1100px; margin: 0 auto;
  padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 1.05rem; letter-spacing: -0.01em;
}
.logo-icon {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--purple));
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem; flex-shrink: 0;
}
.nav-links {
  display: flex; align-items: center; gap: 4px;
}
.nav-link {
  padding: 6px 13px; border-radius: 8px;
  font-size: 0.875rem; color: var(--text-2);
  transition: var(--transition); font-weight: 400;
}
.nav-link:hover, .nav-link.active { background: var(--bg-raised); color: var(--text); }
.nav-link.active { color: var(--primary); }

.nav-cta { margin-left: 8px; }
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; border-radius: 8px; }
.hamburger span { display: block; width: 20px; height: 2px; background: var(--text-2); border-radius: 2px; transition: var(--transition); }
.mobile-menu {
  display: none; position: fixed; top: 60px; left: 0; right: 0; bottom: 0;
  background: var(--bg); z-index: 99; padding: 20px 24px; flex-direction: column; gap: 4px;
}
.mobile-menu .nav-link { font-size: 1rem; padding: 12px 16px; }

/* ── Page sections (SPA routing) ────────────────────── */
.page { display: none; }
.page.active { display: block; }

/* ── Hero ────────────────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: flex; flex-direction: column; justify-content: center;
  padding-top: 60px;
  position: relative; overflow: hidden;
}
.hero-glow {
  position: absolute; top: -200px; left: 50%; transform: translateX(-50%);
  width: 700px; height: 700px; border-radius: 50%;
  background: radial-gradient(ellipse, rgba(91,141,239,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
  align-items: center; padding: 60px 0 40px;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 12px; border-radius: 100px;
  background: var(--primary-dim); border: 1px solid rgba(91,141,239,0.3);
  font-size: 0.78rem; font-weight: 500; color: var(--primary);
  letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 20px;
}
.hero-eyebrow::before { content: ''; display: block; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); animation: pulse 2s infinite; }
.hero-title { margin-bottom: 20px; }
.hero-sub { font-size: 1.05rem; color: var(--text-2); max-width: 420px; margin-bottom: 32px; line-height: 1.75; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 48px; }
.hero-stats { display: flex; gap: 32px; }
.stat { display: flex; flex-direction: column; }
.stat-num { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.02em; }
.stat-lbl { font-size: 0.78rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 2px; }

/* Hero right — app cards mockup */
.hero-visual {
  display: flex; flex-direction: column; gap: 12px;
  position: relative;
}
.hero-card {
  background: var(--bg-raised); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px 20px;
  display: flex; align-items: center; gap: 14px;
  transition: var(--transition);
  animation: slideRight 0.6s ease both;
}
.hero-card:hover { border-color: var(--border-mid); transform: translateX(-4px); }
.hero-card:nth-child(1) { animation-delay: 0.1s; }
.hero-card:nth-child(2) { animation-delay: 0.2s; }
.hero-card:nth-child(3) { animation-delay: 0.3s; }
.hero-card:nth-child(4) { animation-delay: 0.4s; }
.card-icon {
  width: 40px; height: 40px; border-radius: 10px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 1.1rem;
}
.card-icon.win  { background: var(--win-dim); }
.card-icon.droid{ background: var(--android-dim); }
.card-meta { flex: 1; }
.card-name { font-size: 0.9rem; font-weight: 600; }
.card-desc { font-size: 0.78rem; color: var(--text-3); margin-top: 2px; }
.card-ver { font-size: 0.72rem; color: var(--text-3); white-space: nowrap; }

/* ── Section headers ─────────────────────────────────── */
.section-header { margin-bottom: 48px; }
.section-header p { margin-top: 10px; max-width: 500px; font-size: 0.95rem; }
.section-tag {
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--primary); margin-bottom: 10px;
  display: flex; align-items: center; gap: 8px;
}
.section-tag::before { content: ''; display: block; width: 16px; height: 1px; background: var(--primary); }

/* ── Tool cards grid ─────────────────────────────────── */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}
.tool-card {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 24px;
  transition: var(--transition); display: flex; flex-direction: column; gap: 16px;
  position: relative; overflow: hidden;
}
.tool-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  opacity: 0; transition: opacity var(--transition);
}
.tool-card.win::before  { background: linear-gradient(90deg, transparent, var(--win), transparent); }
.tool-card.droid::before{ background: linear-gradient(90deg, transparent, var(--android), transparent); }
.tool-card:hover { border-color: var(--border-mid); transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,0.4); }
.tool-card:hover::before { opacity: 1; }

.card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.card-title-block { display: flex; align-items: center; gap: 12px; }
.tool-icon {
  width: 44px; height: 44px; border-radius: 11px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 1.3rem;
}
.tool-icon.win   { background: var(--win-dim); }
.tool-icon.droid { background: var(--android-dim); }
.tool-card h3 { font-size: 1rem; }
.tool-card .version { font-size: 0.75rem; color: var(--text-3); font-family: 'SF Mono', 'Fira Code', monospace; margin-top: 2px; }
.tool-card p { font-size: 0.875rem; flex: 1; }

.features-list { display: flex; flex-direction: column; gap: 6px; }
.feature-item {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.8rem; color: var(--text-2);
}
.feature-dot { width: 4px; height: 4px; border-radius: 50%; background: var(--primary); flex-shrink: 0; }
.tool-card.droid .feature-dot { background: var(--android); }

.card-footer { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 4px; }
.download-btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 16px; border-radius: 8px; font-size: 0.82rem; font-weight: 500;
  transition: var(--transition);
}
.download-btn.win    { background: var(--win-dim);     color: var(--win);     border: 1px solid rgba(14,165,233,0.3); }
.download-btn.droid  { background: var(--android-dim); color: var(--android); border: 1px solid rgba(61,220,132,0.3); }
.download-btn.soon   { background: rgba(255,255,255,.04); color: var(--text-3); border: 1px solid var(--border); cursor: not-allowed; }
.download-btn:not(.soon):hover { opacity: 0.85; transform: translateY(-1px); }

/* ── Filter tabs ─────────────────────────────────────── */
.filter-tabs { display: flex; gap: 6px; margin-bottom: 36px; flex-wrap: wrap; }
.filter-tab {
  padding: 7px 16px; border-radius: 100px; font-size: 0.83rem; font-weight: 500;
  background: var(--bg-surface); border: 1px solid var(--border); color: var(--text-2);
  transition: var(--transition);
}
.filter-tab:hover { border-color: var(--border-mid); color: var(--text); }
.filter-tab.active { background: var(--primary-dim); border-color: rgba(91,141,239,0.4); color: var(--primary); }

/* ── Platform page hero ──────────────────────────────── */
.platform-hero {
  padding: 80px 0 48px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 48px;
}
.platform-hero h1 { margin-bottom: 12px; }
.platform-hero p { font-size: 1rem; max-width: 500px; }

/* ── Updates / Changelog ─────────────────────────────── */
.updates-list { display: flex; flex-direction: column; gap: 0; }
.update-item {
  display: grid; grid-template-columns: 160px 1fr;
  gap: 32px; padding: 28px 0; border-bottom: 1px solid var(--border);
  position: relative;
}
.update-item:last-child { border-bottom: none; }
.update-meta { display: flex; flex-direction: column; gap: 8px; }
.update-date { font-size: 0.8rem; color: var(--text-3); font-family: monospace; }
.update-ver { font-size: 1rem; font-weight: 700; letter-spacing: -0.01em; }
.update-type {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 4px; font-size: 0.7rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.04em; width: fit-content;
}
.type-fix   { background: rgba(239,91,91,.12);  color: var(--red); }
.type-feat  { background: var(--primary-dim);   color: var(--primary); }
.type-new   { background: rgba(61,220,132,.1);  color: var(--android); }

.update-content h3 { font-size: 1rem; margin-bottom: 8px; }
.update-content p { font-size: 0.875rem; }
.update-changes { margin-top: 12px; display: flex; flex-direction: column; gap: 5px; }
.change-line { display: flex; align-items: flex-start; gap: 8px; font-size: 0.83rem; color: var(--text-2); }
.change-icon { color: var(--primary); flex-shrink: 0; margin-top: 2px; }

/* ── Categories ─────────────────────────────────────── */
.categories-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.category-card {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px;
  transition: var(--transition);
}
.category-card:hover { border-color: var(--border-mid); transform: translateY(-2px); }
.cat-icon { font-size: 1.6rem; margin-bottom: 12px; }
.cat-name { font-size: 0.95rem; font-weight: 600; margin-bottom: 6px; }
.cat-count { font-size: 0.8rem; color: var(--text-3); }

/* ── About / Philosophy ──────────────────────────────── */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.about-principles { display: flex; flex-direction: column; gap: 20px; margin-top: 32px; }
.principle {
  display: flex; gap: 16px; padding: 18px 20px;
  background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius);
}
.principle-icon {
  width: 36px; height: 36px; border-radius: 9px; flex-shrink: 0;
  background: var(--primary-dim); display: flex; align-items: center; justify-content: center; font-size: 1rem;
}
.principle-text h4 { font-size: 0.9rem; margin-bottom: 4px; }
.principle-text p  { font-size: 0.82rem; }

.donate-card {
  background: var(--bg-raised); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 28px; margin-top: 32px;
}
.donate-card h3 { margin-bottom: 8px; }
.donate-card p { font-size: 0.875rem; margin-bottom: 20px; }
.donate-method { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.donate-label { font-size: 0.78rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.05em; width: 100px; }
.donate-value {
  font-family: 'SF Mono','Fira Code',monospace; font-size: 0.82rem;
  background: var(--bg); border: 1px solid var(--border); border-radius: 6px;
  padding: 6px 12px; color: var(--text-2); cursor: pointer;
  transition: var(--transition); flex: 1;
}
.donate-value:hover { border-color: var(--primary); color: var(--text); }

/* ── Footer ──────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border); padding: 40px 0; margin-top: 40px;
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
}
.footer-logo { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 0.95rem; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { font-size: 0.83rem; color: var(--text-3); transition: var(--transition); }
.footer-links a:hover { color: var(--text-2); }
.footer-copy { font-size: 0.78rem; color: var(--text-3); }

/* ── Animations ──────────────────────────────────────── */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.7); }
}
@keyframes slideRight {
  from { opacity: 0; transform: translateX(24px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up { animation: fadeUp 0.5s ease both; }
.fade-up-1 { animation-delay: 0.1s; }
.fade-up-2 { animation-delay: 0.2s; }
.fade-up-3 { animation-delay: 0.3s; }

/* ── Download counter badge ──────────────────────────── */
.dl-counter {
  white-space: nowrap;
  opacity: 0;
  animation: fadeIn 0.4s ease 0.6s forwards;
}
@keyframes fadeIn { to { opacity: 1; } }

/* ── Separator ───────────────────────────────────────── */
.sep { height: 1px; background: var(--border); margin: 0; }

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 900px) {
  .hero-grid   { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .about-grid  { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .section   { padding: 60px 0; }
  .tools-grid { grid-template-columns: 1fr; }
  .update-item { grid-template-columns: 1fr; gap: 12px; }
  .update-meta { flex-direction: row; align-items: center; gap: 12px; }
  .categories-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .hero-stats { gap: 20px; }
  .categories-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}