/* ============================================================
   BytePro — main.css
   Shared styles: theme variables, typography, navbar,
   footer, buttons, and utility classes.
   Page-specific styles stay in their own <style> block.
   ============================================================ */

/* Google Font loaded in layout/header.php */

/* ============================================================
   THEME VARIABLES
   ============================================================ */
[data-theme="light"] {
  --bg:        #ffffff;
  --bg2:       #f7f8fc;
  --bg3:       #eef0f8;
  --card:      #ffffff;
  --border:    #e2e4f0;
  --text:      #0f0f1a;
  --text2:     #3a3a5c;
  --muted:     #6b6b8a;
  --nav-bg:    rgba(255,255,255,0.92);
  --shadow:    0 2px 24px rgba(80,80,160,0.08);
  --accentl:   #dbeafe;
}
[data-theme="dark"] {
  --bg:        #0a0a0f;
  --bg2:       #111118;
  --bg3:       #16161f;
  --card:      #1a1a26;
  --border:    #2a2a3a;
  --text:      #f0f0f8;
  --text2:     #c8c8e8;
  --muted:     #8888a8;
  --nav-bg:    rgba(10,10,15,0.92);
  --shadow:    0 2px 24px rgba(0,0,0,0.3);
  --accentl:   rgba(37,99,235,.15);
}
:root {
  --accent:  #2563eb;
  --accent2: #3b82f6;
  --green:   #22c55e;
  --red:     #ef4444;
  --amber:   #f59e0b;
  --radius:  14px;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background .3s, color .3s;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ============================================================
   NAVBAR
   ============================================================ */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  height: 64px;
  display: flex; align-items: center;
  padding: 0 40px;
  gap: 24px;
  transition: background .3s;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 18px; font-weight: 800; color: var(--text);
  letter-spacing: -0.5px; flex-shrink: 0;
}
.nav-logo-icon {
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), #60a5fa);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 16px; font-weight: 900;
  flex-shrink: 0; overflow: hidden;
}
.nav-logo-icon img { width: 100%; height: 100%; object-fit: cover; border-radius: 8px; }
.nav-links {
  display: flex; gap: 32px; align-items: center;
  margin: 0 auto; list-style: none;
}
.nav-links a {
  font-size: 14px; font-weight: 500; color: var(--muted);
  transition: color .2s; white-space: nowrap;
}
.nav-links a:hover { color: var(--text); }
.nav-right { display: flex; align-items: center; gap: 8px; flex-shrink: 0; margin-left: auto; }
.btn-theme {
  width: 34px; height: 34px; border-radius: 8px;
  background: var(--bg3); border: 1px solid var(--border);
  cursor: pointer; display: flex; align-items: center;
  justify-content: center; font-size: 15px;
  transition: all .2s; color: var(--text); flex-shrink: 0;
}
.btn-theme:hover { border-color: var(--accent); }
.btn-nav-login {
  font-size: 14px; font-weight: 600; color: var(--text2);
  padding: 8px 16px; border-radius: 8px;
  border: 1px solid var(--border); background: transparent;
  transition: all .2s; cursor: pointer; font-family: inherit;
  white-space: nowrap;
}
.btn-nav-login:hover { border-color: var(--accent); color: var(--accent); }

/* Hamburger */
.hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 6px; background: none;
  border: none; flex-shrink: 0;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text); border-radius: 2px; transition: all .3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
.mobile-nav {
  display: none; position: fixed;
  top: 64px; left: 0; right: 0; bottom: 0;
  background: var(--bg); z-index: 199;
  padding: 32px 24px; flex-direction: column; gap: 0;
  transform: translateX(-100%); transition: transform .3s ease;
  overflow-y: auto;
}
.mobile-nav.open { transform: translateX(0); }
.mobile-nav a {
  font-size: 18px; font-weight: 600; color: var(--text2);
  padding: 16px 0; border-bottom: 1px solid var(--border);
  display: block; transition: color .2s;
}
.mobile-nav a:hover { color: var(--accent); }
.mobile-nav .mob-login {
  margin-top: 24px; background: var(--accent); color: #fff;
  text-align: center; padding: 16px; border-radius: 10px;
  font-size: 16px; font-weight: 700;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: 9px;
  font-size: 14px; font-weight: 700; cursor: pointer;
  border: none; transition: all .2s;
  font-family: 'Inter', system-ui, sans-serif;
  white-space: nowrap; text-decoration: none;
}
.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 2px 12px rgba(37,99,235,.3);
}
.btn-primary:hover { background: #1d4ed8; transform: translateY(-1px); box-shadow: 0 4px 20px rgba(37,99,235,.4); }
.btn-secondary {
  background: var(--accentl); color: var(--accent);
  border: 1.5px solid rgba(37,99,235,.25);
}
.btn-secondary:hover { background: rgba(37,99,235,.18); }
.btn-outline {
  background: transparent; border: 1.5px solid var(--border); color: var(--text2);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 14px 28px; font-size: 15px; border-radius: 10px; }
.btn-sm { padding: 7px 14px; font-size: 13px; border-radius: 7px; }

/* ============================================================
   SECTION COMMONS
   ============================================================ */
.section { padding: 100px 40px; }
.section-inner { max-width: 1200px; margin: 0 auto; }
.section-bg { background: var(--bg2); }
.section-label {
  font-size: 12px; font-weight: 700;
  letter-spacing: 3px; text-transform: uppercase;
  color: var(--accent); margin-bottom: 12px;
}
.section-title {
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 900; letter-spacing: -1.5px;
  color: var(--text); margin-bottom: 14px; line-height: 1.15;
}
.section-sub {
  font-size: 16px; color: var(--muted);
  max-width: 540px; line-height: 1.7;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 32px 40px;
  display: flex; align-items: center;
  justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
  transition: background .3s;
}
.footer-left { font-size: 13px; color: var(--muted); }
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; list-style: none; }
.footer-links a { font-size: 13px; color: var(--muted); transition: color .2s; }
.footer-links a:hover { color: var(--text); }

/* ============================================================
   FLASH MESSAGES
   ============================================================ */
.flash-success { background: rgba(34,197,94,.08); border: 1px solid rgba(34,197,94,.3); color: #16a34a; padding: 12px 16px; border-radius: 10px; font-size: 14px; font-weight: 600; margin-bottom: 16px; }
.flash-error   { background: rgba(239,68,68,.08);  border: 1px solid rgba(239,68,68,.3);  color: #dc2626; padding: 12px 16px; border-radius: 10px; font-size: 14px; margin-bottom: 16px; }
.flash-info    { background: rgba(37,99,235,.08);   border: 1px solid rgba(37,99,235,.25);  color: var(--accent); padding: 12px 16px; border-radius: 10px; font-size: 14px; margin-bottom: 16px; }

/* ============================================================
   FORMS (shared)
   ============================================================ */
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.form-group label { font-size: 12px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .5px; }
.form-group input,
.form-group textarea,
.form-group select {
  background: var(--bg2); border: 1.5px solid var(--border);
  border-radius: 8px; color: var(--text); padding: 11px 14px;
  font-size: 14px; font-family: 'Inter', system-ui, sans-serif;
  outline: none; transition: border-color .2s; width: 100%;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--accent); }
.form-group textarea { resize: vertical; min-height: 100px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ============================================================
   RESPONSIVE — shared breakpoints
   ============================================================ */
@media (max-width: 768px) {
  .site-nav { padding: 0 20px; }
  .nav-links { display: none; }
  .btn-nav-login { display: none; }
  .hamburger { display: flex; }
  .mobile-nav { display: flex; }
  .section { padding: 60px 20px; }
  .site-footer { padding: 24px 20px; flex-direction: column; align-items: flex-start; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .section-title { font-size: 24px; }
}