/* =========================================
   NEXUSAI — Global Styles & Design Tokens
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&display=swap');

:root {
  /* Colors */
  --bg:          #070a12;
  --bg-2:        #0d1220;
  --bg-3:        #131928;
  --surface:     #111827;
  --surface-2:   #1a2235;
  --border:      rgba(255,255,255,0.08);
  --border-bright: rgba(255,255,255,0.15);

  --text-primary:   #f0f4ff;
  --text-secondary: #8b9ab5;
  --text-muted:     #4a5568;

  --accent:        #3b82f6;
  --accent-bright: #60a5fa;
  --accent-glow:   rgba(59,130,246,0.25);
  --accent-2:      #06b6d4;    /* cyan */
  --accent-3:      #8b5cf6;    /* violet */

  --success: #10b981;
  --warning: #f59e0b;
  --danger:  #ef4444;

  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  /* Spacing */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  28px;

  /* Shadows */
  --shadow-sm:  0 1px 4px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 20px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(59,130,246,0.15);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: var(--font-body); cursor: pointer; }
input, select, textarea { font-family: var(--font-body); }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- BUTTONS ---- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  white-space: nowrap;
}
.btn-primary:hover {
  background: var(--accent-bright);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(59,130,246,0.35);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  padding: 10px 22px;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}
.btn-ghost:hover {
  border-color: var(--border-bright);
  color: var(--text-primary);
}

.btn-lg { padding: 14px 32px; font-size: 16px; }
.btn-sm { padding: 7px 14px; font-size: 13px; }
.btn-xs { padding: 4px 10px; font-size: 12px; border-radius: var(--radius-sm); }
.btn-full { width: 100%; justify-content: center; }

.btn-danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid rgba(239,68,68,0.3);
  padding: 4px 10px;
  font-size: 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.2s;
}
.btn-danger:hover { background: rgba(239,68,68,0.1); }

/* ---- FORM BASE ---- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}
.form-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}
.form-group label em { color: var(--danger); font-style: normal; margin-left: 2px; }
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  padding: 11px 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }
.form-group select option { background: var(--surface); }

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

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 400 !important;
}
.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  margin-top: 2px;
  flex-shrink: 0;
  accent-color: var(--accent);
}
.checkbox-label a { color: var(--accent-bright); }

.form-actions { margin-top: 24px; }

/* ---- MODAL ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  backdrop-filter: blur(4px);
}
.modal-box {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px;
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}
.modal-box-sm { max-width: 440px; text-align: center; }
.modal-box h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}
.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color 0.2s;
}
.modal-close:hover { color: var(--text-primary); }

/* ---- BADGE ---- */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.03em;
}
.badge-green { background: rgba(16,185,129,0.15); color: var(--success); }
.badge-blue  { background: rgba(59,130,246,0.15); color: var(--accent-bright); }
.badge-orange{ background: rgba(245,158,11,0.15); color: var(--warning); }

/* ---- SECTIONS ---- */
.section-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
}
.section-sub {
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 48px;
  font-size: 16px;
}

/* ---- FOOTER ---- */
.footer {
  border-top: 1px solid var(--border);
  padding: 60px 0 32px;
  margin-top: 80px;
}
.footer-top {
  display: flex;
  gap: 80px;
  margin-bottom: 48px;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 12px;
}
.footer-links {
  display: flex;
  gap: 60px;
  flex: 1;
  justify-content: flex-end;
}
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col h4 {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}
.footer-col a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--text-primary); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  color: var(--text-muted);
  font-size: 13px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 8px;
}
.footer-compact { margin-top: 40px; padding: 24px 0; }

/* ---- NAV LOGO ---- */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--text-primary);
}
.logo-mark {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
}

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--surface-2); border-radius: 3px; }

/* ---- ANIMATIONS ---- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes pulse-glow {
  0%, 100% { opacity: 0.4; }
  50%       { opacity: 0.8; }
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .form-row { grid-template-columns: 1fr; }
  .section-title { font-size: 24px; }
  .footer-top { flex-direction: column; gap: 40px; }
  .footer-links { flex-wrap: wrap; gap: 32px; justify-content: flex-start; }
}

/* ---- MOBILE RESPONSIVE (768px and below) ---- */
@media (max-width: 768px) {
  body { font-size: 14px; }
  .container { padding: 0 16px; }
  .section-title { font-size: 22px; }
  .section-sub { font-size: 14px; margin-bottom: 32px; }
  .modal-box { padding: 24px 20px; }
  .modal-box h3 { font-size: 18px; }
  .btn-primary, .btn-ghost { padding: 8px 16px; font-size: 13px; }
  .btn-lg { padding: 10px 20px; font-size: 14px; }
  .footer { padding: 40px 0 24px; margin-top: 40px; }
  .footer-top { flex-direction: column; gap: 32px; }
  .footer-links { gap: 24px; flex-wrap: wrap; }
  .footer-bottom { flex-direction: column; text-align: center; gap: 4px; }
}

/* Small phones */
@media (max-width: 480px) {
  .container { padding: 0 12px; }
  .modal-box { padding: 20px 16px; }
}