/* ============================================
   Basic to Pro — basictopro.tech
   Modern dark tech theme
   ============================================ */

:root {
  --bg: #0a0e17;
  --bg-alt: #0f1522;
  --card: #141c2e;
  --card-hover: #1a2438;
  --border: #223049;
  --accent: #00d4ff;
  --accent-2: #4f7cff;
  --accent-dim: rgba(0, 212, 255, 0.12);
  --text: #e8edf6;
  --text-muted: #93a1b8;
  --radius: 14px;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--accent); text-decoration: none; }

.container {
  width: min(1140px, 92%);
  margin: 0 auto;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.3px;
}

.brand .logo-badge {
  width: 42px;
  height: 42px;
  flex: none;
}

.brand span em {
  font-style: normal;
  color: var(--accent);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.main-nav a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.main-nav a:hover, .main-nav a.active { color: var(--accent); }

.main-nav a.nav-cta {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #04121a;
  padding: 9px 20px;
  border-radius: 999px;
  font-weight: 700;
  transition: opacity 0.2s, transform 0.2s;
}

.main-nav a.nav-cta:hover { opacity: 0.9; transform: translateY(-1px); }

/* Mobile nav */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1.3rem;
  padding: 4px 12px;
  cursor: pointer;
}

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    padding: 8px 4%;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 13px 0; width: 100%; }
  .main-nav a.nav-cta { text-align: center; margin: 10px 0; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 96px 0 80px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 60% 50% at 70% 10%, rgba(79, 124, 255, 0.15), transparent),
    radial-gradient(ellipse 50% 40% at 20% 90%, rgba(0, 212, 255, 0.08), transparent);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 30%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 30%, black, transparent);
  pointer-events: none;
}

.hero-inner { position: relative; max-width: 720px; }

.eyebrow {
  display: inline-block;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(0, 212, 255, 0.3);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}

h1 .grad {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 34px;
}

.btn-row { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 13px 30px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  transition: transform 0.2s, opacity 0.2s, background 0.2s;
  cursor: pointer;
  border: none;
  font-family: var(--font);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #04121a;
}

.btn-primary:hover { transform: translateY(-2px); opacity: 0.92; }

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
  background: transparent;
}

.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Sections ---------- */
section { padding: 76px 0; }

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

.section-head { max-width: 640px; margin-bottom: 48px; }

.section-head h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.4px;
  margin-bottom: 12px;
}

.section-head p { color: var(--text-muted); font-size: 1.05rem; }

/* ---------- Service cards ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(255px, 1fr));
  gap: 22px;
}

.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform 0.25s, border-color 0.25s, background 0.25s;
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 212, 255, 0.45);
  background: var(--card-hover);
}

.service-card .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.service-card .icon svg { width: 24px; height: 24px; stroke: var(--accent); }

.service-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }

.service-card p { color: var(--text-muted); font-size: 0.93rem; }

/* ---------- Why us ---------- */
.feature-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 22px;
}

.feature {
  border-left: 3px solid var(--accent);
  padding: 4px 0 4px 20px;
}

.feature h3 { font-size: 1.05rem; margin-bottom: 6px; }

.feature p { color: var(--text-muted); font-size: 0.93rem; }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(79, 124, 255, 0.12));
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 20px;
  padding: 52px 40px;
  text-align: center;
}

.cta-band h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); font-weight: 800; margin-bottom: 12px; }

.cta-band p { color: var(--text-muted); margin-bottom: 28px; max-width: 520px; margin-inline: auto; }

/* ---------- About page ---------- */
.about-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 52px;
  align-items: start;
}

@media (max-width: 820px) { .about-layout { grid-template-columns: 1fr; } }

.about-photo {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  position: sticky;
  top: 96px;
}

.about-photo img { width: 100%; }

.photo-fallback {
  aspect-ratio: 3 / 4;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--card), var(--card-hover));
  font-size: 4.5rem;
  font-weight: 800;
  color: var(--accent);
}

.about-text p { color: var(--text-muted); font-size: 1.05rem; margin-bottom: 20px; }

.about-text p strong { color: var(--text); }

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 16px;
  margin: 34px 0;
}

.stat {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
}

.stat .num { font-size: 1.9rem; font-weight: 800; color: var(--accent); }

.stat .label { font-size: 0.82rem; color: var(--text-muted); margin-top: 4px; }

/* ---------- Contact page ---------- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 52px;
  align-items: start;
}

@media (max-width: 820px) { .contact-layout { grid-template-columns: 1fr; } }

.contact-info h2 { font-size: 1.6rem; margin-bottom: 14px; }

.contact-info p { color: var(--text-muted); margin-bottom: 26px; }

.contact-method {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.contact-method .icon {
  width: 42px; height: 42px; flex: none;
  border-radius: 10px;
  background: var(--accent-dim);
  display: flex; align-items: center; justify-content: center;
}

.contact-method .icon svg { width: 20px; height: 20px; stroke: var(--accent); }

.contact-method h3 { font-size: 0.95rem; }

.contact-method p { margin: 0; font-size: 0.9rem; }

.contact-form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }

.form-group { margin-bottom: 18px; }

label {
  display: block;
  font-size: 0.87rem;
  font-weight: 600;
  margin-bottom: 7px;
  color: var(--text);
}

label .req { color: var(--accent); }

input, textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 15px;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: border-color 0.2s;
}

input:focus, textarea:focus { outline: none; border-color: var(--accent); }

textarea { resize: vertical; min-height: 130px; }

/* ---------- Articles page ---------- */
.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 34px;
}

.filter-btn {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font);
  transition: all 0.2s;
}

.filter-btn:hover { border-color: var(--accent); color: var(--accent); }

.filter-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #04121a;
  border-color: transparent;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 22px;
}

.article-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s, border-color 0.25s;
}

.article-card:hover { transform: translateY(-4px); border-color: rgba(0, 212, 255, 0.45); }

.article-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 13px;
  font-size: 0.78rem;
}

.article-tag {
  padding: 3px 12px;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  font-size: 0.68rem;
}

.tag-tech { background: rgba(79, 124, 255, 0.15); color: #7d9dff; }
.tag-security { background: rgba(255, 92, 122, 0.15); color: #ff7d99; }
.tag-ai { background: rgba(0, 212, 255, 0.13); color: var(--accent); }
.tag-it { background: rgba(84, 214, 143, 0.14); color: #63e09b; }

.article-meta .src { color: var(--text-muted); }

.article-card h3 { font-size: 1.05rem; line-height: 1.4; margin-bottom: 10px; }

.article-card h3 a { color: var(--text); transition: color 0.2s; }

.article-card h3 a:hover { color: var(--accent); }

.article-card p { color: var(--text-muted); font-size: 0.88rem; flex: 1; }

.article-card .date { margin-top: 15px; font-size: 0.78rem; color: var(--text-muted); }

.articles-status {
  text-align: center;
  color: var(--text-muted);
  padding: 60px 0;
  font-size: 1rem;
}

.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  margin: 0 auto 18px;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.updated-note { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 20px; }

/* ---------- Page hero (inner pages) ---------- */
.page-hero {
  padding: 64px 0 44px;
  background:
    radial-gradient(ellipse 50% 60% at 80% 0%, rgba(79, 124, 255, 0.12), transparent);
}

.page-hero h1 { font-size: clamp(1.9rem, 4vw, 2.8rem); margin-bottom: 10px; }

.page-hero p { color: var(--text-muted); font-size: 1.08rem; max-width: 640px; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 44px 0 34px;
  background: var(--bg-alt);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-grid .brand { font-size: 1rem; }

.footer-links { display: flex; gap: 22px; }

.footer-links a { color: var(--text-muted); font-size: 0.88rem; }

.footer-links a:hover { color: var(--accent); }

.copyright { font-size: 0.82rem; color: var(--text-muted); }

/* ---------- Utility ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}