/* ===========================
   Global Theme Variables
=========================== */
:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #0f1720;
  --muted: #556277;
  --accent: #4e73df;
  --accent-2: #6c9bff;
  --accent-cta: #ffcc00;
  --glass: rgba(255, 255, 255, 0.6);
}

html.dark {
  --bg: #0b1220;
  --card: #07122a;
  --text: #e6eefc;
  --muted: #9fb1d6;
  --accent: #7aa1ff;
  --accent-2: #4e73df;
  --accent-cta: #ffcc00;
  --glass: rgba(255, 255, 255, 0.04);
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  background: var(--bg);
  color: var(--text);
}

/* ===========================
   Header
=========================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(0,0,0,0.05);
}

html.dark .site-header {
  background: rgba(7,18,42,0.5);
}

.header-inner {
  max-width: 1200px;
  margin: auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  height: 64px;
}

.main-nav {
  display: flex;
  gap: 22px;
}

.main-nav a {
  text-decoration: none;
  font-weight: 600;
  color: var(--text);
}

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

.theme-toggle {
  border: none;
  background: none;
  cursor: pointer;
  font-size: 20px;
}

/* ===========================
   HERO Banner (Centered)
=========================== */
.hero-banner {
  position: relative;
  width: 100%;
  height: 540px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 90px;
  overflow: hidden;
}

.hero-banner .hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.65);
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0.2),
    rgba(0,0,0,0.45)
  );
}

.hero-content {
  position: absolute;
  text-align: center;
  max-width: 900px;
  padding: 20px;
  color: white;
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 12px;
}

.hero-sub {
  font-size: 18px;
  opacity: 0.92;
  margin-bottom: 20px;
}

.hero-buttons {
  display: flex;
  gap: 14px;
  justify-content: center;
  margin-bottom: 18px;
}

.btn {
  padding: 12px 20px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  display: inline-block;
}

.btn.primary {
  background: var(--accent-cta);
  color: #000;
}

.btn.ghost {
  border: 2px solid rgba(255,255,255,0.6);
  color: white;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 16px;
}

.hero-stats div {
  text-align: center;
  color: white;
}

.hero-stats strong {
  font-size: 22px;
  display: block;
}

/* ===========================
   Sections
=========================== */
.section {
  padding: 70px 0;
}

.section-title {
  text-align: center;
  font-size: 30px;
  margin-bottom: 40px;
}

/* ===========================
   Features (1-row layout)
=========================== */
.single-row {
  display: flex;
  justify-content: center;
  gap: 28px;
  flex-wrap: nowrap;
}

.card {
  background: var(--card);
  padding: 28px;
  border-radius: 14px;
  width: 350px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.06);
  text-align: center;
  transition: transform .3s ease, box-shadow .3s ease;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 14px 40px rgba(0,0,0,0.12);
}

.card-icon {
  width: 90px;
  margin-bottom: 12px;
}

/* ===========================
   Tools Grid with animations
=========================== */
.tools-grid {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  justify-content: center;
}

.tool {
  background: var(--card);
  padding: 12px;
  width: 160px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: center;
  box-shadow: 0 6px 20px rgba(0,0,0,0.04);
  transition: transform .3s ease, box-shadow .3s ease;
}

.tool:hover {
  transform: translateY(-8px) scale(1.06);
  box-shadow: 0 14px 40px rgba(0,0,0,0.12);
}

.tool img {
  width: 42px;
  height: 42px;
}

/* ===========================
   Blog Cards
=========================== */
.blog-grid {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

.post {
  width: 330px;
  background: var(--card);
  padding: 22px;
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0,0,0,0.06);
}

/* ===========================
   About & Contact
=========================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 30px;
}

.skills ul {
  padding-left: 18px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 450px;
  gap: 40px;
  align-items: start;
}

.contact-form label {
  display: block;
  margin-bottom: 14px;
  font-weight: 600;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid rgba(0,0,0,0.1);
  margin-top: 6px;
  font-size: 15px;
}

.contact-form button {
  margin-top: 10px;
  width: 100%;
}

/* ===========================
   Footer
=========================== */
.site-footer {
  background: var(--card);
  padding: 30px 0;
  margin-top: 40px;
}

.footer-inner {
  display: flex;
  justify-content: center;
  gap: 20px;
  align-items: center;
}

.footer-logo {
  height: 42px;
}

/* ===========================
   Reveal Animation
=========================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================
   Responsive
=========================== */
@media (max-width: 900px) {
  .main-nav { display: none; }

  .single-row {
    flex-direction: column;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}