/* Rehan Trading - Styles */
:root {
  --bg: #0b0f17;
  --bg-alt: #0f1420;
  --text: #e8eefc;
  --muted: #a9b4c9;
  --brand: #3b82f6;
  --brand-2: #06b6d4;
  --card: #121826;
  --card-2: #172036;
  --border: #1f2a44;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}
* { 
  box-sizing: border-box; 
  margin: 0;
  padding: 0;
}

html { 
  height: 100%; 
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  overflow-x: hidden;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: linear-gradient(180deg, var(--bg) 0%, #0b1220 100%);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

.container { width: min(1120px, 92%); margin-inline: auto; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 15, 23, .7);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; }
.brand { color: var(--text); text-decoration: none; font-weight: 800; letter-spacing: .3px; font-size: 1.25rem; }
.brand span { color: var(--brand); }

.nav { display: flex; gap: 20px; }
.nav a { color: var(--muted); text-decoration: none; font-weight: 500; padding: 8px 10px; border-radius: 8px; transition: all .2s ease; }
.nav a:hover { color: var(--text); background: rgba(255,255,255,.06); }
.nav a:focus { outline: 2px solid var(--brand); outline-offset: 2px; }

.nav-toggle { display: none; background: none; border: none; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); margin: 5px 0; border-radius: 2px; }

/* Hero */
.hero { padding: 96px 0 48px; }
.hero-inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 36px; align-items: center; }
.hero-copy h1 { font-size: clamp(2rem, 5vw, 3rem); margin: 0 0 12px; line-height: 1.1; }
.hero-copy p { color: var(--muted); margin: 0 0 22px; font-size: 1.05rem; }
.hero-actions { display: flex; gap: 12px; }
.btn { display: inline-block; padding: 12px 18px; border-radius: 10px; border: 1px solid var(--border); color: var(--text); text-decoration: none; background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02)); box-shadow: var(--shadow); transition: transform .2s ease, box-shadow .2s ease; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 14px 40px rgba(0,0,0,.45); }
.btn:focus { outline: 2px solid var(--brand); outline-offset: 2px; }
.btn.primary { border-color: transparent; background: linear-gradient(135deg, var(--brand), var(--brand-2)); }

.hero-art { min-height: 360px; height: 360px; border-radius: 18px; background:
  radial-gradient(60% 60% at 70% 30%, rgba(59,130,246,.35), transparent 70%),
  radial-gradient(60% 60% at 30% 70%, rgba(6,182,212,.35), transparent 70%),
  url('https://images.unsplash.com/photo-1511919884226-fd3cad34687c?q=80&w=1600&auto=format&fit=crop');
  background-size: cover; background-position: center; border: 1px solid var(--border); box-shadow: var(--shadow);
}

/* Sections */
.section { padding: 72px 0; }
.section-alt { background: linear-gradient(180deg, var(--bg-alt), #0f1628); border-top: 1px solid rgba(255,255,255,.06); border-bottom: 1px solid rgba(255,255,255,.06); }
.section-title { font-size: 1.8rem; margin: 0 0 22px; }

/* Cards */
.grid.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card { background: linear-gradient(180deg, var(--card), var(--card-2)); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; box-shadow: var(--shadow); transition: transform .2s ease, box-shadow .2s ease; }
.card:hover { transform: translateY(-4px); box-shadow: 0 14px 40px rgba(0,0,0,.45); }
.card img { aspect-ratio: 16 / 9; object-fit: cover; }
.card-body { padding: 14px 14px 16px; }
.card-body h3 { margin: 0 0 6px; font-size: 1.1rem; }
.card-body p { margin: 0 0 10px; color: var(--muted); font-size: .98rem; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags span { font-size: .8rem; background: rgba(255,255,255,.06); border: 1px solid var(--border); padding: 6px 8px; border-radius: 999px; color: var(--text); }

/* Contact */
.contact { 
  text-align: center;
}
.contact > p {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.contact-cards { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; margin-top: 12px; }
.contact-card { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text); background: linear-gradient(180deg, var(--card), var(--card-2)); border: 1px solid var(--border); padding: 16px; border-radius: 14px; box-shadow: var(--shadow); transition: all .2s ease; }
.contact-card:hover { outline: 2px solid rgba(59,130,246,.5); transform: translateY(-2px); }
.contact-card:focus { outline: 2px solid var(--brand); outline-offset: 2px; }
.contact-card > div:last-child { text-align: left; }
.contact-card h3 { margin: 0 0 4px 0; }
.contact-card p { margin: 0; }
.icon { font-size: 1.4rem; }

/* Footer */
.site-footer { padding: 18px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 10px; color: var(--muted); font-size: .95rem; }
.footer-inner a { color: var(--muted); text-decoration: none; }
.footer-inner a:hover { color: var(--text); }

/* ========== RESPONSIVE DESIGN ========== */

/* Extra Small Devices (Phones, less than 480px) */
@media only screen and (max-width: 479px) {
  .container { 
    width: 95%; 
    padding: 0 10px;
  }
  
  .hero { 
    padding: 40px 0 30px; 
  }
  
  .hero-inner { 
    grid-template-columns: 1fr; 
    gap: 24px;
  }
  
  .hero-copy h1 { 
    font-size: 1.75rem !important;
    line-height: 1.2;
  }
  
  .hero-copy p { 
    font-size: 0.95rem;
  }
  
  .hero-art { 
    min-height: 200px !important; 
    height: 200px !important; 
    order: -1;
  }
  
  .hero-actions { 
    flex-direction: column; 
    width: 100%; 
    gap: 10px;
  }
  
  .btn { 
    width: 100% !important; 
    text-align: center; 
    padding: 14px 20px !important;
    font-size: 0.95rem;
  }
  
  .section { 
    padding: 50px 0; 
  }
  
  .section-title { 
    font-size: 1.4rem !important;
  }
  
  .grid.cards { 
    grid-template-columns: 1fr !important; 
    gap: 16px;
  }
  
  .card-body { 
    padding: 12px !important; 
  }
  
  .card-body h3 { 
    font-size: 1rem;
  }
  
  .card-body p { 
    font-size: 0.9rem;
  }
  
  .contact-cards { 
    grid-template-columns: 1fr !important; 
    gap: 12px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
  }
  
  .contact-card { 
    padding: 14px !important; 
    flex-direction: row;
  }
  
  .icon { 
    font-size: 1.3rem !important; 
  }
  
  .footer-inner { 
    flex-direction: column !important; 
    text-align: center; 
    gap: 12px;
    font-size: 0.85rem;
  }
  
  .nav { 
    position: fixed !important; 
    inset: 64px 12px auto !important; 
    background: rgba(15,20,32,.98) !important; 
    backdrop-filter: blur(12px) !important; 
    border: 1px solid var(--border) !important; 
    padding: 12px !important; 
    border-radius: 12px !important; 
    flex-direction: column !important; 
    gap: 8px !important; 
    display: none !important; 
    box-shadow: var(--shadow) !important;
    z-index: 100;
  }
  
  .nav.show { 
    display: flex !important; 
  }
  
  .nav a { 
    padding: 14px 16px !important; 
    font-size: 1rem;
    width: 100%;
  }
  
  .nav-toggle { 
    display: inline-block !important; 
  }
}

/* Small Devices (Phones, 480px to 640px) */
@media only screen and (min-width: 480px) and (max-width: 640px) {
  .container { 
    width: 92%; 
  }
  
  .hero { 
    padding: 50px 0 35px; 
  }
  
  .hero-inner { 
    grid-template-columns: 1fr; 
    gap: 28px;
  }
  
  .hero-copy h1 { 
    font-size: 2rem !important;
  }
  
  .hero-art { 
    min-height: 220px !important; 
    height: 220px !important; 
  }
  
  .hero-actions { 
    flex-direction: column; 
    width: 100%; 
  }
  
  .btn { 
    width: 100% !important; 
    text-align: center; 
    padding: 14px 18px !important;
  }
  
  .section { 
    padding: 55px 0; 
  }
  
  .section-title { 
    font-size: 1.5rem !important;
  }
  
  .grid.cards { 
    grid-template-columns: 1fr !important; 
    gap: 18px;
  }
  
  .contact-cards { 
    grid-template-columns: 1fr !important; 
  }
  
  .footer-inner { 
    flex-direction: column !important; 
    text-align: center; 
    gap: 12px;
  }
  
  .nav { 
    position: fixed !important; 
    inset: 64px 16px auto !important; 
    background: rgba(15,20,32,.95) !important; 
    backdrop-filter: blur(10px) !important; 
    border: 1px solid var(--border) !important; 
    padding: 12px !important; 
    border-radius: 12px !important; 
    flex-direction: column !important; 
    gap: 8px !important; 
    display: none !important; 
    box-shadow: var(--shadow) !important;
  }
  
  .nav.show { 
    display: flex !important; 
  }
  
  .nav a { 
    padding: 12px 16px !important; 
  }
  
  .nav-toggle { 
    display: inline-block !important; 
  }
}

/* Medium Devices (Tablets, 641px to 768px) */
@media only screen and (min-width: 641px) and (max-width: 768px) {
  .hero { 
    padding: 60px 0 40px; 
  }
  
  .hero-inner { 
    grid-template-columns: 1fr; 
  }
  
  .hero-art { 
    min-height: 240px !important; 
    height: 240px !important; 
  }
  
  .section { 
    padding: 60px 0; 
  }
  
  .grid.cards { 
    grid-template-columns: repeat(2, 1fr) !important; 
  }
  
  .contact-cards { 
    grid-template-columns: repeat(2, 1fr) !important; 
  }
  
  .contact-card:last-child {
    grid-column: 1 / -1;
    max-width: 400px;
    margin: 0 auto;
  }
}

/* Tablets and Small Laptops (769px to 900px) */
@media only screen and (min-width: 769px) and (max-width: 900px) {
  .hero-inner { 
    grid-template-columns: 1fr; 
  }
  
  .hero-art { 
    min-height: 280px !important; 
    height: 280px !important; 
  }
  
  .grid.cards { 
    grid-template-columns: repeat(2, 1fr) !important; 
  }
}

/* Large Screens (1400px and up) */
@media only screen and (min-width: 1400px) {
  .hero-art { 
    height: 420px !important; 
  }
}

/* Landscape Orientation for Phones */
@media only screen and (max-height: 500px) and (orientation: landscape) {
  .hero { 
    padding: 30px 0 25px !important; 
  }
  
  .hero-art { 
    min-height: 180px !important; 
    height: 180px !important; 
  }
  
  .section { 
    padding: 40px 0 !important; 
  }
}

/* High DPI Displays (Retina) */
@media only screen and (-webkit-min-device-pixel-ratio: 2), 
       only screen and (min-resolution: 192dpi) {
  .hero-art { 
    background-image:
      radial-gradient(60% 60% at 70% 30%, rgba(59,130,246,.35), transparent 70%),
      radial-gradient(60% 60% at 30% 70%, rgba(6,182,212,.35), transparent 70%),
      url('https://images.unsplash.com/photo-1511919884226-fd3cad34687c?q=80&w=2400&auto=format&fit=crop');
  }
}