/* ============================================
   ALGOSTECH PRICING — Cyan Fintech System
   Matches: index.html design language exactly
   ============================================ */

:root {
  --primary: #00ffcc;
  --primary-dim: rgba(0, 255, 204, 0.12);
  --primary-glow: rgba(0, 255, 204, 0.35);
  --accent: #00c2ff;
  --bg: #050914;
  --bg-2: #080e1f;
  --bg-card: rgba(255, 255, 255, 0.035);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.08);
  --border-bright: rgba(0, 255, 204, 0.28);
  --text: #e8edf8;
  --text-muted: #6b7a99;
  --text-dim: #9aa5be;
  --font-display: 'Syne', sans-serif;
  --font-mono: 'Space Mono', monospace;
  --font-body: 'DM Sans', sans-serif;
  --nav-h: 76px;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-pill: 999px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-card: 0 4px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(0, 255, 204, 0.12);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }

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

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; font-family: var(--font-body); }
.hidden { display: none !important; }

/* NOISE */
.noise {
  position: fixed; inset: 0; pointer-events: none; z-index: 9999; opacity: 0.025;
  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='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px;
}

/* CONTAINER */
.container { max-width: 1200px; margin: 0 auto; padding: 0 5%; }

/* GRADIENT TEXT */
.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

/* SECTION TAG */
.section-tag {
  display: inline-block;
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.16em;
  color: var(--primary); background: var(--primary-dim);
  border: 1px solid var(--border-bright);
  padding: 5px 14px; border-radius: var(--radius-pill); margin-bottom: 1.2rem;
}

/* SECTION HEADER */
.section-header { text-align: center; margin-bottom: 3rem; }
.section-title {
  font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800; line-height: 1.1;
}

/* ======================== NAV ======================== */
nav {
  position: fixed; top: 0; left: 0; right: 0; height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 5%; z-index: 1000;
  transition: var(--transition); border-bottom: 1px solid transparent;
}
nav.scrolled {
  background: rgba(5,9,20,0.92); backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
}

.logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-size: 1.25rem; font-weight: 800; }
.logo-mark { display: flex; align-items: center; filter: drop-shadow(0 0 8px var(--primary)); }

.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
.nav-link { padding: 8px 14px; border-radius: var(--radius-pill); font-size: 0.9rem; color: var(--text-dim); transition: var(--transition); }
.nav-link:hover { color: var(--text); background: var(--bg-card); }
.nav-link.active { color: var(--primary); background: var(--primary-dim); }

.nav-btn { background: var(--primary); color: #000; border: none; padding: 8px 20px; border-radius: var(--radius-pill); font-size: 0.9rem; font-weight: 700; transition: var(--transition); font-family: var(--font-body); }
.nav-btn:hover { background: #fff; transform: translateY(-1px); }

.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 6px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); transform-origin: center; }
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ======================== PAGE HERO ======================== */
.page-hero {
  position: relative; min-height: 46vh;
  display: flex; align-items: center; justify-content: center;
  padding-top: var(--nav-h); overflow: hidden;
}

.hero-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 20%, transparent 80%);
  pointer-events: none;
}

.page-hero-inner { text-align: center; padding: 60px 20px 40px; position: relative; z-index: 1; }

.page-title { font-family: var(--font-display); font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 800; line-height: 1.1; margin-bottom: 1rem; }
.page-desc { color: var(--text-dim); font-size: 1.05rem; max-width: 500px; margin: 0 auto 2.4rem; line-height: 1.7; }

/* BILLING TOGGLE */
.billing-toggle {
  display: inline-flex; align-items: center; gap: 14px;
  background: var(--bg-card); border: 1px solid var(--border);
  padding: 10px 20px; border-radius: var(--radius-pill);
}

.toggle-label {
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-muted);
  letter-spacing: 0.06em; transition: var(--transition);
  display: flex; align-items: center; gap: 8px;
}
.toggle-label.active { color: var(--primary); }

.toggle-btn {
  width: 44px; height: 24px; border-radius: 999px;
  background: var(--border); border: 1px solid var(--border);
  position: relative; transition: var(--transition); padding: 0;
}
.toggle-btn.on { background: var(--primary-dim); border-color: var(--border-bright); }

.toggle-thumb {
  position: absolute; top: 3px; left: 3px;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--text-muted); transition: var(--transition);
}
.toggle-btn.on .toggle-thumb { left: 23px; background: var(--primary); box-shadow: 0 0 8px var(--primary-glow); }

.save-badge {
  background: var(--primary); color: #000; font-size: 0.6rem;
  font-weight: 700; padding: 2px 8px; border-radius: var(--radius-pill);
  letter-spacing: 0.04em;
}

/* ======================== PRICING SECTION ======================== */
.pricing-section { padding: 60px 0 80px; }

.pricing-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  align-items: start;
}

/* ---- CARD ---- */
.pricing-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 36px 30px;
  position: relative; overflow: visible;
  transition: var(--transition);
  display: flex; flex-direction: column;
}

.pricing-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
  background: var(--bg-card-hover);
}

.pricing-card.featured {
  border-color: var(--border-bright);
  background: linear-gradient(160deg, rgba(0,255,204,0.06), var(--bg-card) 60%);
  transform: scale(1.03);
  box-shadow: var(--shadow-glow);
}

.pricing-card.featured:hover { transform: scale(1.03) translateY(-6px); }

/* TOP LINE */
.card-top-line {
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0.5;
  border-radius: var(--radius) var(--radius) 0 0;
  pointer-events: none;
}
.featured .card-top-line { opacity: 1; }

/* POPULAR BADGE */
.popular-badge {
  position: absolute; top: -1px; right: 18px;
  background: var(--primary); color: #000;
  font-size: 0.65rem; font-weight: 700; font-family: var(--font-mono);
  padding: 3px 12px; border-radius: 0 0 var(--radius-pill) var(--radius-pill);
  letter-spacing: 0.05em;
  z-index: 2;
}

/* PLAN HEADER */
.plan-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }

.plan-icon {
  width: 46px; height: 46px; border-radius: var(--radius-sm);
  background: var(--primary-dim); border: 1px solid var(--border-bright);
  display: flex; align-items: center; justify-content: center;
}
.featured-icon { background: var(--primary); border-color: var(--primary); }

.plan-num { font-family: var(--font-mono); font-size: 0.65rem; color: var(--text-muted); letter-spacing: 0.12em; }

.plan-name { font-family: var(--font-display); font-size: 1.6rem; font-weight: 800; margin-bottom: 8px; }
.plan-tagline { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 24px; line-height: 1.5; }

/* PRICE BLOCK */
.price-block { margin-bottom: 24px; }
.price-row { display: flex; align-items: baseline; gap: 6px; }
.price-amt { font-family: var(--font-display); font-size: 2.4rem; font-weight: 800; color: var(--text); }
.featured .price-amt { color: var(--primary); }
.price-period { font-size: 0.88rem; color: var(--text-muted); font-family: var(--font-mono); }

.plan-divider { height: 1px; background: var(--border); margin-bottom: 24px; }

/* FEATURES */
.plan-features { list-style: none; display: flex; flex-direction: column; gap: 12px; margin-bottom: 28px; flex: 1; }
.plan-features li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.9rem; color: var(--text-dim); }

.feat-icon {
  width: 20px; height: 20px; border-radius: 50%; flex-shrink: 0;
  background: var(--primary-dim); border: 1px solid var(--border-bright);
  color: var(--primary); font-size: 0.65rem;
  display: flex; align-items: center; justify-content: center; margin-top: 1px;
}
.featured .feat-icon { background: var(--primary); color: #000; border-color: var(--primary); }

.feat-key { color: var(--text); font-weight: 500; }

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 28px; border-radius: var(--radius-pill);
  font-size: 0.95rem; font-weight: 600; border: none;
  transition: var(--transition); white-space: nowrap;
}
.btn.primary { background: var(--primary); color: #000; font-weight: 700; box-shadow: 0 0 20px rgba(0,255,204,0.22); }
.btn.primary:hover { background: #fff; transform: translateY(-2px); box-shadow: 0 0 36px rgba(0,255,204,0.45); }
.btn.ghost { background: transparent; color: var(--text-dim); border: 1px solid var(--border); }
.btn.ghost:hover { border-color: var(--border-bright); color: var(--primary); background: var(--primary-dim); transform: translateY(-2px); }
.btn.dark { background: #000; color: #fff; border: 1px solid rgba(0,0,0,0.2); }
.btn.dark:hover { background: #111; transform: translateY(-2px); }
.btn.ghost-dark { background: transparent; color: #000; border: 2px solid rgba(0,0,0,0.25); }
.btn.ghost-dark:hover { background: rgba(0,0,0,0.08); }
.btn.full { width: 100%; }

/* ======================== COMPARE NOTE ======================== */
.compare-note { margin-top: 48px; }
.compare-inner {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 20px 28px;
  display: flex; align-items: flex-start; gap: 16px;
}
.compare-icon { font-size: 1.2rem; flex-shrink: 0; margin-top: 2px; }
.compare-inner p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.65; }
.compare-inner a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }

/* ======================== FAQ ======================== */
.faq-section { padding: 80px 0; background: var(--bg-2); }

.faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }

.faq-item {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); overflow: hidden;
  cursor: pointer; transition: var(--transition);
}
.faq-item:hover { border-color: var(--border-bright); }
.faq-item.open { border-color: var(--border-bright); }

.faq-q {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px; font-weight: 500; font-size: 0.95rem;
}

.faq-arrow {
  font-size: 1rem; color: var(--primary); transition: transform 0.3s;
  display: inline-block; flex-shrink: 0;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); }

.faq-a {
  max-height: 0; overflow: hidden;
  padding: 0 24px; color: var(--text-dim); font-size: 0.9rem; line-height: 1.7;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-item.open .faq-a { max-height: 200px; padding: 0 24px 20px; }

/* ======================== CTA ======================== */
.cta-section { padding: 60px 0 80px; }
.cta-inner {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 24px; padding: 80px 60px; text-align: center;
  position: relative; overflow: hidden;
}
.cta-glow {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(255,255,255,0.2), transparent 70%);
  pointer-events: none;
}
.cta-title { font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; color: #000; margin-bottom: 0.8rem; }
.cta-desc { color: rgba(0,0,0,0.65); font-size: 1.05rem; margin-bottom: 2.4rem; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ======================== LOGO IMAGE ======================== */
.logo-img { width: 34px; height: 34px; object-fit: contain; }

/* ======================== FOOTER ======================== */
footer { background: var(--bg-2); }

.footer-top { padding: 70px 0 50px; border-bottom: 1px solid var(--border); }

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
}

.footer-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-size: 1.25rem; font-weight: 800;
  margin-bottom: 16px;
}

.footer-brand-desc {
  color: var(--text-muted); font-size: 0.85rem;
  line-height: 1.7; margin-bottom: 20px; max-width: 280px;
}

.footer-social { display: flex; gap: 8px; flex-wrap: wrap; }

.social-icon {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--bg-card); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); transition: var(--transition);
}
.social-icon:hover { border-color: var(--border-bright); color: var(--primary); background: var(--primary-dim); }
.social-icon.telegram-icon:hover { border-color: rgba(0,194,255,0.3); color: var(--accent); }

.footer-col-title {
  font-family: var(--font-display); font-size: 1rem; font-weight: 700;
  color: var(--primary); margin-bottom: 20px;
}

.footer-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-list a { color: var(--text-muted); font-size: 0.88rem; transition: var(--transition); }
.footer-list a:hover { color: var(--text); padding-left: 4px; }

.footer-contact-list { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.footer-contact-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 0.85rem; color: var(--text-muted); line-height: 1.55; }
.footer-contact-icon {
  display: flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; flex-shrink: 0;
  background: rgba(255,255,255,0.05); border: 1px solid var(--border);
  border-radius: 6px; margin-top: 1px;
}
.footer-contact-list a { color: var(--text-muted); transition: var(--transition); }
.footer-contact-list a:hover { color: var(--primary); }

.footer-bottom { padding: 20px 0; text-align: center; }
.footer-bottom p { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-muted); letter-spacing: 0.06em; }

/* ======================== MODAL ======================== */
.modal-overlay {
  position: fixed; inset: 0; z-index: 5000;
  background: rgba(0,0,0,0.75); backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal-box {
  background: var(--bg-2); border: 1px solid var(--border-bright);
  border-radius: var(--radius); padding: 44px 40px;
  width: 100%; max-width: 440px; text-align: center;
  position: relative; box-shadow: var(--shadow-glow);
}
.modal-close { position: absolute; top: 16px; right: 16px; background: none; border: none; color: var(--text-muted); font-size: 1.1rem; padding: 4px 8px; transition: var(--transition); }
.modal-close:hover { color: var(--text); }
.modal-icon { font-size: 2.4rem; margin-bottom: 14px; }
.modal-box h3 { font-family: var(--font-display); font-size: 1.4rem; font-weight: 700; margin-bottom: 8px; }
.modal-box p { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 24px; line-height: 1.6; }

.modal-options { display: flex; flex-direction: column; gap: 10px; }
.modal-opt {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 16px 20px;
  cursor: pointer; transition: var(--transition); text-align: left;
}
.modal-opt:hover { border-color: var(--border-bright); background: var(--primary-dim); }
.opt-label { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-muted); letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 4px; }
.opt-price { font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; color: var(--primary); }
.opt-arrow { color: var(--primary); font-size: 1.1rem; }

/* ======================== REVEAL ======================== */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.pricing-card.reveal.visible.featured { transform: scale(1.03); }
.pricing-card.featured.reveal.visible:hover { transform: scale(1.03) translateY(-6px); }

/* Ensure buttons always clickable regardless of animation state */
.pricing-card .btn {
  position: relative;
  z-index: 5;
  pointer-events: all !important;
  cursor: pointer;
}

/* Stagger cards */
.pricing-card:nth-child(1) { transition-delay: 0s; }
.pricing-card:nth-child(2) { transition-delay: 0.1s; }
.pricing-card:nth-child(3) { transition-delay: 0.2s; }

/* ======================== RESPONSIVE ======================== */
@media (max-width: 1024px) {
  .pricing-grid { grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .pricing-card.featured { transform: scale(1); }
  .pricing-card.featured.reveal.visible { transform: scale(1); }
  .pricing-card.featured:hover { transform: translateY(-6px); }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: rgba(5,9,20,0.97); backdrop-filter: blur(20px);
    flex-direction: column; align-items: stretch; padding: 20px; gap: 4px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%); opacity: 0; pointer-events: none;
    transition: var(--transition); z-index: 999;
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: all; }
  .nav-link { padding: 14px 16px; border-radius: var(--radius-sm); font-size: 1rem; }
  .nav-btn { width: 100%; padding: 14px; }

  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .pricing-card.featured { transform: none; }

  .cta-inner { padding: 60px 30px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-brand-col { text-align: left; }
  .footer-brand-desc { max-width: 100%; }
  .footer-social { justify-content: flex-start; }
  .modal-box { padding: 32px 24px; }
  .compare-inner { flex-direction: column; }
}

@media (max-width: 480px) {
  .page-title { font-size: 2rem; }
  .cta-inner { padding: 50px 20px; }
  .billing-toggle { flex-wrap: wrap; justify-content: center; }
}