/* ============================================================
   ALPHINIX — Global CSS
   Design: Corporate / Minimal / Premium Tech
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ─── CSS Variables ─── */
:root {
  --color-primary:    #0050FF;
  --color-primary-d:  #003DCC;
  --color-primary-l:  #EBF0FF;
  --color-dark:       #0D1B2A;
  --color-dark-2:     #1A2B3C;
  --color-slate:      #4B5563;
  --color-muted:      #9CA3AF;
  --color-border:     #E5E7EB;
  --color-bg:         #FFFFFF;
  --color-bg-alt:     #F9FAFB;
  --color-success:    #10B981;
  --color-warning:    #F59E0B;
  --color-danger:     #EF4444;
  --color-info:       #3B82F6;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 12px rgba(0,0,0,.08);
  --shadow-lg:  0 10px 30px rgba(0,0,0,.1);

  --font-base:  'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: 180ms ease;
  --container:  72rem; /* 1152px */
}

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
html, body { overscroll-behavior-y: auto; }
body {
  font-family: var(--font-base);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-dark);
  background: var(--color-bg);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }

/* ─── Container ─── */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  padding: .6875rem 1.5rem;
  border: 2px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
  text-decoration: none;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-d);
  border-color: var(--color-primary-d);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0,80,255,.25);
}
.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-secondary:hover {
  background: var(--color-primary-l);
  transform: translateY(-1px);
}
.btn-dark {
  background: var(--color-dark);
  color: #fff;
  border-color: var(--color-dark);
}
.btn-dark:hover { background: var(--color-dark-2); transform: translateY(-1px); }
.btn-sm  { padding: .5rem 1.1rem; font-size: .875rem; }
.btn-lg  { padding: .875rem 2rem; font-size: 1.0625rem; }

/* ─── Section Spacing ─── */
.section { padding: 5rem 0; }
.section-sm { padding: 3rem 0; }
.section-dark { background: var(--color-dark); color: #fff; }
.section-alt  { background: var(--color-bg-alt); }

/* ─── Typography ─── */
.section-label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: .75rem;
}
.section-title {
  font-size: clamp(1.75rem, 3vw, 2.75rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--color-dark);
}
.section-title-white { color: #fff; }
.section-desc {
  font-size: 1.0625rem;
  color: var(--color-slate);
  max-width: 42rem;
  margin-top: .875rem;
}
.section-header {
  margin-bottom: 3rem;
}
.section-header-center { text-align: center; }
.section-header-center .section-desc { margin: .875rem auto 0; }

/* ─── Cards ─── */
.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.card-icon {
  width: 2.75rem;
  height: 2.75rem;
  background: var(--color-primary-l);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  flex-shrink: 0;
}
.card-icon svg { color: var(--color-primary); width: 1.375rem; height: 1.375rem; }
.card-title { font-size: 1.0625rem; font-weight: 700; margin-bottom: .5rem; }
.card-text  { font-size: .9375rem; color: var(--color-slate); line-height: 1.6; }

/* ─── Grids ─── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

/* ─── Badge ─── */
.badge {
  display: inline-block;
  padding: .2rem .65rem;
  border-radius: 100px;
  font-size: .75rem;
  font-weight: 600;
}
.badge-primary { background: var(--color-primary-l); color: var(--color-primary); }
.badge-success { background: #D1FAE5; color: #059669; }
.badge-warning { background: #FEF3C7; color: #D97706; }
.badge-danger  { background: #FEE2E2; color: #DC2626; }

/* ─── Forms ─── */
.form-group { margin-bottom: 1.25rem; }
.form-label  { display: block; font-size: .875rem; font-weight: 600; margin-bottom: .35rem; color: var(--color-dark); }
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: .6875rem .875rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: .9375rem;
  font-family: inherit;
  background: #fff;
  color: var(--color-dark);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0,80,255,.1);
}
.form-textarea { resize: vertical; min-height: 120px; }
.form-error { font-size: .8125rem; color: var(--color-danger); margin-top: .25rem; }
.form-hint  { font-size: .8125rem; color: var(--color-muted); margin-top: .25rem; }

/* ─── Alert Messages ─── */
.alert {
  padding: .875rem 1.125rem;
  border-radius: var(--radius-md);
  font-size: .9375rem;
  border-left: 4px solid;
  margin-bottom: 1rem;
}
.alert-success { background: #F0FDF4; border-color: var(--color-success); color: #166534; }
.alert-error   { background: #FEF2F2; border-color: var(--color-danger);  color: #991B1B; }
.alert-warning { background: #FFFBEB; border-color: var(--color-warning); color: #92400E; }
.alert-info    { background: #EFF6FF; border-color: var(--color-info);    color: #1E40AF; }

/* ─── Table ─── */
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--color-border); }
.table { width: 100%; border-collapse: collapse; font-size: .9375rem; }
.table th {
  background: #FAFBFC;
  padding: 1rem 1.25rem;
  text-align: left;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #64748B;
  border-bottom: 1px solid var(--color-border);
}
.table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid #F1F5F9;
  color: var(--color-dark);
  vertical-align: middle;
}
.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr { transition: all .15s ease; }
.table tbody tr:hover { 
  background: #F8FAFC; 
  box-shadow: 0 0 0 1px #E2E8F0 inset;
}

/* ─── Pagination ─── */
.pagination { display: flex; align-items: center; gap: .35rem; }
.pagination a, .pagination span {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.25rem; height: 2.25rem;
  border-radius: var(--radius-md);
  font-size: .875rem; font-weight: 500;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}
.pagination a:hover { border-color: var(--color-primary); color: var(--color-primary); }
.pagination .active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* ─── Utility ─── */
.text-muted   { color: var(--color-muted); }
.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-danger  { color: var(--color-danger); }
.text-center  { text-align: center; }
.fw-600       { font-weight: 600; }
.fw-700       { font-weight: 700; }
.fw-800       { font-weight: 800; }
.mt-1 { margin-top: .25rem; }
.mt-2 { margin-top: .5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 2rem; }
.mb-1 { margin-bottom: .25rem; }
.mb-2 { margin-bottom: .5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 2rem; }
.flex        { display: flex; }
.items-center { align-items: center; }
.gap-2       { gap: .5rem; }
.gap-3       { gap: .75rem; }
.gap-4       { gap: 1rem; }

/* ─── Divider ─── */
.divider { height: 1px; background: var(--color-border); margin: 2rem 0; }

/* ─── Fade-in animation ─── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-in-up { animation: fadeInUp .5s ease forwards; }

/* ─── Navbar ─── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: 4rem;
}
.navbar-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.navbar-logo {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-dark);
  letter-spacing: -.03em;
  flex-shrink: 0;
}
.navbar-logo span { color: var(--color-primary); }
.navbar-nav {
  display: flex;
  align-items: center;
  gap: .125rem;
  list-style: none;
}
.navbar-nav li a {
  display: block;
  padding: .45rem .875rem;
  font-size: .9375rem;
  font-weight: 500;
  color: var(--color-slate);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.navbar-nav li a:hover,
.navbar-nav li a.active {
  color: var(--color-dark);
  background: var(--color-bg-alt);
}
.navbar-actions { display: flex; align-items: center; gap: .75rem; }
.navbar-toggle {
  display: none;
  background: none;
  border: none;
  padding: .375rem;
  border-radius: var(--radius-sm);
  color: var(--color-dark);
}
.navbar-toggle:hover { background: var(--color-bg-alt); }

/* ─── Footer ─── */
.footer { background: var(--color-dark); color: rgba(255,255,255,.65); padding: 4rem 0 2rem; }
.footer-top { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 3rem; margin-bottom: 3rem; }
.footer-brand .footer-logo { font-size: 1.3rem; font-weight: 800; color: #fff; letter-spacing: -.03em; margin-bottom: .875rem; }
.footer-brand .footer-logo span { color: var(--color-primary); }
.footer-brand p { font-size: .9375rem; line-height: 1.7; max-width: 22rem; }
.footer-col h4 { font-size: .8125rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: #fff; margin-bottom: 1rem; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: .5rem; }
.footer-col ul li a { font-size: .9375rem; transition: color var(--transition); }
.footer-col ul li a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: .875rem;
}
.footer-socials { display: flex; gap: .75rem; }
.footer-socials a {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,.15);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  color: rgba(255,255,255,.6);
}
.footer-socials a:hover {
  border-color: var(--color-primary);
  color: #fff;
  background: var(--color-primary);
}

/* ─── Responsive ─── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .navbar-nav, .navbar-actions .btn { display: none; }
  .navbar-toggle { display: flex; }
  .navbar-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 4rem; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    padding: 1rem;
    gap: .25rem;
    box-shadow: var(--shadow-md);
  }
  .navbar-nav.open li a { padding: .75rem 1rem; }
  .navbar-actions .btn-last { display: flex; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .section { padding: 3.5rem 0; }
}
@media (max-width: 480px) {
  .section-title { font-size: 1.625rem; }
  .btn-lg { padding: .75rem 1.5rem; }
}