:root {
  --primary: #1e2a4a;
  --primary-light: #2d4a7c;
  --accent: #4a7dff;
  --accent-hover: #3a6ae8;
  --bg: #ffffff;
  --bg-light: #f5f7fb;
  --bg-dark: #0f1729;
  --text: #2c3e50;
  --text-light: #6b7c8d;
  --text-white: #ffffff;
  --border: #e1e5eb;
  --radius: 8px;
  --radius-lg: 16px;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
  --transition: all 0.3s ease;
  --max-width: 1200px;
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; }
ul { list-style: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ─── NAV ─── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: 72px;
  display: flex; align-items: center;
}
.nav .container {
  display: flex; align-items: center; justify-content: space-between; width: 100%;
}
.nav-logo {
  font-size: 1.5rem; font-weight: 700; color: var(--primary);
  letter-spacing: -0.5px; display: flex; align-items: center; gap: 10px;
}
.nav-logo-icon {
  width: 36px; height: 36px;
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.nav-logo-icon img {
  width: 100%; height: 100%; object-fit: cover;
}
.nav-logo span { color: var(--accent); }
.nav-links { display: flex; gap: 8px; align-items: center; }
.nav-links > a {
  font-size: 0.9rem; font-weight: 500; color: var(--text-light);
  position: relative; padding: 4px 0; min-width: 72px; text-align: center;
}
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-links > a.active::after {
  content: ''; position: absolute; bottom: -2px; left: 0; right: 0;
  height: 2px; background: var(--accent); border-radius: 1px;
}
.nav-cta {
  background: var(--accent) !important; color: #fff !important;
  padding: 10px 24px !important; border-radius: 6px; font-weight: 600 !important;
}
.nav-cta:hover { background: var(--accent-hover) !important; transform: translateY(-1px); }

/* ─── LANG SWITCHER ─── */
.lang-switcher { position: relative; }
.lang-btn {
  background: var(--bg-light); border: 1px solid var(--border); border-radius: 6px;
  padding: 8px 14px; font-size: 0.85rem; font-weight: 600; color: var(--text-light);
  cursor: pointer; transition: var(--transition); display: flex; align-items: center; gap: 4px;
}
.lang-btn:hover { border-color: var(--primary); color: var(--primary); }
.lang-dropdown {
  display: none; position: absolute; top: calc(100% + 8px); left: 50%; transform: translateX(-50%);
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); min-width: 170px; z-index: 100;
  padding: 10px 15px;
}
.lang-switcher.open .lang-dropdown { display: block; }
.lang-option {
  display: block; padding: 10px 16px; font-size: 0.85rem; font-weight: 500;
  color: var(--text-light); transition: var(--transition); cursor: pointer;
  text-align: left;
}
.lang-option:hover { background: var(--bg-light); color: var(--primary); }
.lang-option.active { color: var(--primary); font-weight: 700; }

.mobile-lang-switcher {
  display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px;
  padding-top: 12px; border-top: 1px solid var(--border);
}
.mobile-lang-switcher .lang-option {
  padding: 6px 12px; border-radius: 6px; font-size: 0.82rem;
  border: 1px solid var(--border); color: var(--text-light);
}
.mobile-lang-switcher .lang-option.active {
  background: var(--primary); color: #fff; border-color: var(--primary);
}

@keyframes fadeIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }

.hamburger {
  display: none; flex-direction: column; gap: 5px; cursor: pointer;
  background: none; border: none; padding: 4px;
}
.hamburger span { width: 24px; height: 2px; background: var(--text); transition: var(--transition); }

/* ─── HERO ─── */
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, var(--bg) 0%, var(--bg-light) 100%);
  overflow: hidden;
}
.hero .container {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(74,125,255,0.1); color: var(--accent);
  padding: 6px 16px; border-radius: 20px; font-size: 0.85rem; font-weight: 600;
  margin-bottom: 20px;
}
.hero-badge::before { content: ''; width: 6px; height: 6px; background: var(--accent); border-radius: 50%; }
.hero h1 {
  font-size: 3.2rem; font-weight: 800; line-height: 1.15;
  color: var(--primary); letter-spacing: -1px; margin-bottom: 20px;
}
.hero h1 .highlight { color: var(--accent); }
.hero p {
  font-size: 1.15rem; color: var(--text-light); margin-bottom: 32px;
  max-width: 480px; line-height: 1.7;
}
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-image {
  display: flex; justify-content: center; align-items: center;
  padding: 40px;
}

/* Hero Device Mockups */
.hero-devices {
  display: flex; gap: 24px; align-items: center; justify-content: center;
  padding: 20px;
}
.device-card {
  border-radius: var(--radius-lg); padding: 28px;
  width: 220px; min-height: 340px;
  display: flex; flex-direction: column; gap: 16px;
  box-shadow: var(--shadow-lg);
}
.device-terminal {
  background: linear-gradient(135deg, #1a2744, #2d4a7c);
  color: #fff; position: relative;
}
.device-terminal .dt-status {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.75rem; opacity: 0.8;
}
.device-terminal .dt-status-dot {
  width: 8px; height: 8px; background: #4ade80; border-radius: 50%;
}
.device-terminal .dt-clock {
  font-size: 2.8rem; font-weight: 800; letter-spacing: 2px;
  text-align: center; margin: 20px 0;
}
.device-terminal .dt-icons {
  display: flex; justify-content: center; gap: 16px; margin-bottom: 16px;
}
.device-terminal .dt-icon-item {
  width: 40px; height: 40px; background: rgba(255,255,255,0.15);
  border-radius: 10px; display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
}
.device-terminal .dt-btn {
  background: var(--accent); color: #fff; border: none; border-radius: 12px;
  padding: 14px; font-size: 0.85rem; font-weight: 700;
  text-align: center; margin-top: auto;
}
.device-phone {
  background: #fff; border: 1px solid var(--border);
  color: var(--text);
}
.device-phone .dp-title {
  font-size: 0.95rem; font-weight: 700; color: var(--primary);
  padding-bottom: 12px; border-bottom: 1px solid var(--border);
}
.device-phone .dp-row {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 0; font-size: 0.85rem;
}
.device-phone .dp-row-icon {
  width: 32px; height: 32px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center; font-size: 0.9rem;
}
.device-phone .dp-row-icon.green { background: rgba(74,222,128,0.15); }
.device-phone .dp-row-icon.blue { background: rgba(74,125,255,0.1); }
.device-phone .dp-row-icon.gray { background: var(--bg-light); }
.device-phone .dp-label { color: var(--text-light); font-size: 0.8rem; }
.device-phone .dp-value { font-weight: 600; color: var(--primary); }
.device-phone .dp-badge {
  margin-top: auto; padding: 10px; background: var(--bg-light);
  border-radius: 10px; text-align: center; font-size: 0.75rem;
  color: var(--text-light);
}

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 8px; font-weight: 600;
  font-size: 0.95rem; border: none; cursor: pointer;
  transition: var(--transition);
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(74,125,255,0.3); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--border); }
.btn-outline:hover { border-color: var(--primary); background: var(--bg); }
.btn-dark { background: var(--primary); color: #fff; }
.btn-dark:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(30,42,74,0.3); }
.btn-white { background: #fff; color: var(--primary); border: 2px solid var(--border); }
.btn-white:hover { border-color: var(--accent); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-sm { padding: 10px 20px; font-size: 0.85rem; }
.btn-download {
  background: #fff; color: var(--primary); border: 2px solid rgba(255,255,255,0.3);
  padding: 12px 24px; gap: 10px;
}
.btn-download:hover { border-color: #fff; background: rgba(255,255,255,0.1); }

/* ─── SECTION ─── */
.section { padding: 100px 0; }
.section-dark { background: var(--bg-dark); color: var(--text-white); }
.section-light { background: var(--bg-light); }
.section-header { text-align: center; max-width: 640px; margin: 0 auto 64px; }
.section-header .label {
  display: inline-block; color: var(--accent); font-weight: 600;
  font-size: 0.85rem; text-transform: uppercase; letter-spacing: 2px; margin-bottom: 12px;
}
.section-header h2 {
  font-size: 2.4rem; font-weight: 800; color: var(--primary);
  letter-spacing: -0.5px; margin-bottom: 16px;
}
.section-dark .section-header h2 { color: #fff; }
.section-header p { color: var(--text-light); font-size: 1.05rem; }
.section-dark .section-header p { color: rgba(255,255,255,0.6); }

/* ─── FEATURES ─── */
.features-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px;
}
.feature-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 36px 28px;
  transition: var(--transition); text-align: center;
}
.feature-card:hover {
  transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent;
}
.feature-icon {
  width: 64px; height: 64px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px; font-size: 1.6rem;
}
.feature-icon.blue { background: rgba(74,125,255,0.1); color: var(--accent); }
.feature-icon.orange { background: rgba(255,159,67,0.1); color: #ff9f43; }
.feature-icon.green { background: rgba(46,160,100,0.1); color: #2ea064; }
.feature-icon.purple { background: rgba(120,80,180,0.1); color: #7850b4; }
.feature-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; color: var(--primary); }
.feature-card p { font-size: 0.9rem; color: var(--text-light); line-height: 1.6; }

/* ─── PRODUCT SHOWCASE ─── */
.product-showcase .container {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.product-image-wrap {
  background: var(--bg-light); border-radius: var(--radius-lg);
  padding: 60px; display: flex; justify-content: center; align-items: center;
}
.product-image-wrap img {
  max-height: 380px; width: auto;
  filter: drop-shadow(0 12px 40px rgba(30,42,74,0.1));
}
.product-info h2 {
  font-size: 2rem; font-weight: 800; color: var(--primary); margin-bottom: 12px;
}
.product-info .price {
  font-size: 1.8rem; font-weight: 700; color: var(--accent); margin-bottom: 20px;
}
.product-info p { color: var(--text-light); margin-bottom: 28px; line-height: 1.7; }
.specs-list { margin-bottom: 32px; }
.specs-list li {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 0; border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}
.specs-list li:last-child { border: none; }
.specs-list .spec-label { color: var(--text-light); min-width: 140px; }
.specs-list .spec-value { font-weight: 600; color: var(--primary); }
.spec-check { color: var(--accent); font-weight: 700; }

/* ─── PRODUCT DUAL CARDS ─── */
.dual-cards {
  display: grid; grid-template-columns: 1fr 1fr; gap: 32px;
  max-width: 1000px; margin: 0 auto;
}
.dual-card {
  border-radius: var(--radius-lg); padding: 40px;
  display: flex; flex-direction: column; gap: 20px;
}
.dual-card-light {
  background: #fff; border: 1px solid var(--border);
}
.dual-card-dark {
  background: linear-gradient(135deg, #1a2744, #0f1729);
  color: #fff;
}
.dual-card h3 {
  font-size: 1.4rem; font-weight: 800; color: var(--primary);
  display: flex; align-items: center; gap: 10px;
}
.dual-card-dark h3 { color: #fff; }
.dual-card .subtitle {
  font-size: 0.9rem; color: var(--text-light);
}
.dual-card-dark .subtitle { color: rgba(255,255,255,0.6); }
.dual-card .spec-row {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 0; font-size: 0.9rem;
}
.dual-card .spec-row .spec-icon { font-size: 1rem; width: 24px; text-align: center; }
.dual-card .feat-row {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 0; font-size: 0.9rem; color: rgba(255,255,255,0.85);
}
.dual-card .feat-row .feat-check { color: #4ade80; font-weight: 700; }
.dual-card .download-row {
  display: flex; gap: 12px; flex-wrap: wrap; margin-top: 8px;
}

/* ─── CTA BANNER ─── */
.cta-banner {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: var(--radius-lg); padding: 60px 40px;
  text-align: center; max-width: 1000px; margin: 0 auto;
}
.cta-banner h2 {
  font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: 12px;
}
.cta-banner p {
  color: rgba(255,255,255,0.75); font-size: 1rem; margin-bottom: 28px;
}
.cta-banner .cta-buttons {
  display: flex; gap: 16px; justify-content: center; flex-wrap: wrap;
}

/* ─── SOFTWARE ─── */
.software-cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 28px;
}
.software-card {
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 36px;
  transition: var(--transition);
}
.software-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }
.software-card .badge {
  display: inline-block; background: var(--accent); color: #fff;
  padding: 4px 12px; border-radius: 4px; font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; margin-bottom: 16px;
}
.software-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; color: var(--primary); }
.software-card p { color: var(--text-light); margin-bottom: 20px; font-size: 0.9rem; line-height: 1.6; }
.software-features { margin-bottom: 24px; }
.software-features li {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 0; font-size: 0.9rem; color: var(--text);
}
.software-features li::before { content: '✓'; color: var(--accent); font-weight: 700; }
.download-buttons { display: flex; gap: 12px; flex-wrap: wrap; }
.download-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 20px; border-radius: 6px; font-size: 0.85rem;
  font-weight: 600; background: var(--bg-light); color: var(--primary);
  border: 1px solid var(--border); cursor: pointer; transition: var(--transition);
}
.download-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.15); }

/* ─── COMPATIBILITY ─── */
.compat-grid {
  display: flex; justify-content: center; gap: 48px; flex-wrap: wrap;
}
.compat-item {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  padding: 32px 40px; background: rgba(255,255,255,0.05);
  border-radius: var(--radius-lg); border: 1px solid rgba(255,255,255,0.08);
  min-width: 160px;
}
.compat-icon { font-size: 2.5rem; }
.compat-item span { font-size: 0.9rem; font-weight: 600; }

/* ─── APP FEATURES ─── */
.app-features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.app-feature-card {
  background: var(--bg-light); border-radius: var(--radius-lg);
  padding: 32px; transition: var(--transition);
}
.app-feature-card:hover {
  transform: translateY(-4px); box-shadow: var(--shadow-lg);
}
.app-feature-icon {
  width: 56px; height: 56px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin-bottom: 16px;
  background: rgba(74,125,255,0.1); color: var(--accent);
}
.app-feature-card h3 {
  font-size: 1.05rem; font-weight: 700; color: var(--primary); margin-bottom: 8px;
}
.app-feature-card p {
  font-size: 0.88rem; color: var(--text-light); line-height: 1.6;
}

/* ─── NEWSLETTER / CTA SECTION ─── */
.newsletter {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  padding: 80px 0; text-align: center;
}
.newsletter h2 { font-size: 2rem; font-weight: 700; color: #fff; margin-bottom: 12px; }
.newsletter p { color: rgba(255,255,255,0.7); margin-bottom: 32px; }

/* ─── FOOTER ─── */
.footer {
  background: var(--bg-dark); color: rgba(255,255,255,0.5);
  padding: 60px 0 30px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .nav-logo { color: #fff; margin-bottom: 16px; font-size: 1.4rem; }
.footer-brand p { font-size: 0.9rem; line-height: 1.6; max-width: 280px; }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
  width: 40px; height: 40px; border-radius: 8px;
  background: rgba(255,255,255,0.08); display: flex;
  align-items: center; justify-content: center;
  color: rgba(255,255,255,0.5); font-size: 1rem;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--accent); color: #fff; }
.footer h4 {
  color: #fff; font-size: 0.95rem; font-weight: 700; margin-bottom: 20px;
}
.footer ul li { margin-bottom: 10px; }
.footer ul a { font-size: 0.9rem; }
.footer ul a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px; display: flex; justify-content: space-between;
  font-size: 0.85rem; flex-wrap: wrap; gap: 12px;
}
.footer-bottom a:hover { color: #fff; }
.footer-icp { color: #e8913a; }

/* ─── PAGE HEADER ─── */
.page-header {
  padding: 120px 0 60px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: #fff; text-align: center;
}
.page-header h1 { font-size: 2.8rem; font-weight: 800; margin-bottom: 12px; }
.page-header p { font-size: 1.1rem; opacity: 0.8; }

/* ─── ABOUT ─── */
.about-content {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.about-text h2 { font-size: 2rem; font-weight: 800; color: var(--primary); margin-bottom: 16px; }
.about-text p { color: var(--text-light); margin-bottom: 16px; line-height: 1.8; }
.about-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 32px;
}
.stat { text-align: center; padding: 20px; background: var(--bg-light); border-radius: var(--radius); }
.stat .number { font-size: 2rem; font-weight: 800; color: var(--accent); }
.stat .label { font-size: 0.85rem; color: var(--text-light); margin-top: 4px; }
.about-image {
  background: var(--bg-light); border-radius: var(--radius-lg);
  min-height: 400px; display: flex; align-items: center; justify-content: center;
  font-size: 4rem; color: var(--border);
}

/* ─── CONTACT ─── */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px;
}
.contact-form { display: flex; flex-direction: column; gap: 16px; }
.form-group label {
  display: block; font-size: 0.9rem; font-weight: 600;
  margin-bottom: 6px; color: var(--text);
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 16px; border: 1px solid var(--border);
  border-radius: var(--radius); font-size: 0.95rem;
  font-family: inherit; transition: var(--transition); outline: none;
}
.form-group input:focus, .form-group textarea:focus {
  border-color: var(--primary); box-shadow: 0 0 0 3px rgba(30,42,74,0.1);
}
.form-group textarea { resize: vertical; min-height: 140px; }
.contact-info { padding: 20px 0; }
.contact-info-item {
  display: flex; gap: 16px; align-items: flex-start;
  margin-bottom: 28px;
}
.contact-icon {
  width: 48px; height: 48px; border-radius: 12px;
  background: rgba(74,125,255,0.1); display: flex;
  align-items: center; justify-content: center;
  color: var(--accent); font-size: 1.2rem; flex-shrink: 0;
}
.contact-info-item h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 4px; }
.contact-info-item p { font-size: 0.9rem; color: var(--text-light); }

/* ─── FAQ ─── */
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border); border-radius: var(--radius);
  margin-bottom: 12px; overflow: hidden;
}
.faq-question {
  width: 100%; padding: 20px 24px; background: none;
  border: none; text-align: left; font-size: 1rem;
  font-weight: 600; cursor: pointer; display: flex;
  justify-content: space-between; align-items: center;
  color: var(--primary); transition: var(--transition);
}
.faq-question:hover { background: var(--bg-light); }
.faq-question .arrow { transition: transform 0.3s; }
.faq-question.open .arrow { transform: rotate(180deg); }
.faq-answer {
  padding: 0 24px; max-height: 0; overflow: hidden;
  transition: all 0.3s ease;
}
.faq-answer p {
  padding-bottom: 20px; color: var(--text-light);
  font-size: 0.95rem; line-height: 1.7;
}

/* ─── SPEC TABLE ─── */
.spec-table {
  width: 100%; border-collapse: collapse; max-width: 640px;
}
.spec-table tr { border-bottom: 1px solid var(--border); }
.spec-table td {
  padding: 14px 0; font-size: 0.95rem;
}
.spec-table td:first-child {
  color: var(--text-light); width: 40%; font-weight: 500;
}
.spec-table td:last-child { font-weight: 600; color: var(--primary); }

/* ─── WHATS IN BOX ─── */
.box-items {
  display: flex; gap: 32px; flex-wrap: wrap; justify-content: center;
}
.box-item {
  text-align: center; padding: 24px;
  background: var(--bg-light); border-radius: var(--radius);
  min-width: 140px;
}
.box-item .icon { font-size: 2rem; margin-bottom: 8px; }
.box-item span { font-size: 0.9rem; font-weight: 500; color: var(--text); }

/* ─── MOBILE NAV ─── */
.mobile-nav {
  display: none; position: fixed; top: 72px; left: 0; right: 0;
  background: #fff; border-bottom: 1px solid var(--border);
  padding: 20px 24px; flex-direction: column; gap: 16px;
  z-index: 999; box-shadow: var(--shadow);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 1rem; font-weight: 500; color: var(--text);
  padding: 8px 0; border-bottom: 1px solid var(--border);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 2.6rem; }
  .hero .container { gap: 40px; }
  .dual-cards { grid-template-columns: 1fr; }
  .app-features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .hero .container { grid-template-columns: 1fr; text-align: center; }
  .hero p { margin-left: auto; margin-right: auto; }
  .hero-buttons { justify-content: center; }
  .hero-devices { flex-direction: column; align-items: center; }
  .device-card { width: 100%; max-width: 280px; }
  .hero-image { padding: 20px; }
  .features-grid { grid-template-columns: 1fr; }
  .product-showcase .container { grid-template-columns: 1fr; }
  .about-content { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2.2rem; }
  .section-header h2 { font-size: 1.8rem; }
  .page-header h1 { font-size: 2rem; }
  .dual-cards { grid-template-columns: 1fr; }
  .app-features-grid { grid-template-columns: 1fr; }
  .cta-banner { padding: 40px 24px; }
}

/* ─── FADE-IN ANIMATION ─── */
.feature-card, .software-card, .product-showcase, .faq-item, .app-feature-card, .dual-card {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in-visible {
  opacity: 1;
  transform: translateY(0);
}