/* =====================================================================
   Supraja CTF — Unified Visual Theme (v3 Frosted Glass)
   ===================================================================== */

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

:root {
  --st-navy:        #0a2233;
  --st-navy-2:      #0d2e41;
  --st-cyan:        #12d6f0;
  --st-cyan-2:      #08b8e0;
  --st-mint:        #23e6a3;
  --st-danger:      #ff5f6d;
  --st-text:        #eaf4f7;
  --st-text-dim:    #b7c7d1;

  /* Translucent Frosted Glass Gradients */
  --st-glass-bg:      linear-gradient(155deg, rgba(10, 28, 44, 0.18) 0%, rgba(6, 18, 30, 0.26) 100%);
  --st-glass-bg-soft: linear-gradient(155deg, rgba(12, 34, 52, 0.14) 0%, rgba(8, 24, 38, 0.20) 100%);
  --st-glass-bg-light: linear-gradient(155deg, rgba(10, 28, 44, 0.10) 0%, rgba(6, 18, 30, 0.15) 100%);
  --st-glass-border:  rgba(18, 214, 240, 0.24);
  --st-glass-shadow:  0 12px 40px rgba(0,0,0,0.45), 0 1px 0 rgba(255,255,255,0.12) inset;
  --st-blur: 20px;
  --st-radius-lg: 20px;
  --st-radius-md: 14px;
  --st-radius-sm: 10px;
}

/* ---------------------------------------------------------------
   Base & Video Background
--------------------------------------------------------------- */
html {
  background-color: #020912;
}
html, body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif !important;
  color: var(--st-text) !important;
  background: transparent !important;
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background: radial-gradient(ellipse at 50% 0%, rgba(2, 8, 16, 0.15) 0%, rgba(2, 8, 16, 0.45) 80%, rgba(1, 5, 10, 0.70) 100%);
}

#background-video {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  width: 100vw !important;
  height: 100vh !important;
  min-width: 100% !important;
  min-height: 100% !important;
  object-fit: cover !important;
  z-index: -3 !important;
  pointer-events: none !important;
  filter: saturate(110%) brightness(0.95) contrast(1.02);
}

h1,h2,h3,h4,h5,h6 {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  letter-spacing: .2px;
}

/* ---------------------------------------------------------------
   Navbar — Translucent Frosted Glass
--------------------------------------------------------------- */
#nav,
nav.navbar {
  background: rgba(6, 18, 28, 0.78) !important;
  -webkit-backdrop-filter: blur(20px) saturate(150%) !important;
  backdrop-filter: blur(20px) saturate(150%) !important;
  border-bottom: 1px solid rgba(18, 214, 240, 0.25) !important;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4) !important;
  opacity: 1 !important;
  padding: 0.65rem 1.5rem !important;
}

.img {
  height: 44px !important;
  max-height: 44px !important;
  width: auto !important;
  max-width: 200px !important;
  object-fit: contain !important;
  display: block !important;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.35)) !important;
  transition: transform .2s ease !important;
}
.img:hover { transform: scale(1.03) !important; }

#nav .collapse.navbar-collapse,
nav.navbar .collapse.navbar-collapse {
  background: transparent !important;
}

.navbar-nav {
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
  margin-bottom: 0 !important;
}

.navbar-nav .nav-item {
  margin: 0 !important;
  padding: 0 !important;
}

#a, .nav-link, .navbar-nav .nav-link {
  color: #eaf4f7 !important;
  font-weight: 500 !important;
  font-size: 0.95rem !important;
  padding: 0.55rem 1.1rem !important;
  border-radius: 999px !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 8px !important;
  white-space: nowrap !important;
  text-decoration: none !important;
  transition: all .25s ease !important;
}

#a:hover, .nav-link:hover, .navbar-nav .nav-link:hover {
  color: var(--st-cyan) !important;
  background: rgba(18, 214, 240, 0.14) !important;
  transform: translateY(-1px) !important;
}

.nav-link.active, .nav-link[aria-current="page"] {
  background: rgba(18, 214, 240, 0.20) !important;
  color: #ffffff !important;
  border: 1px solid rgba(18, 214, 240, 0.45) !important;
  box-shadow: 0 0 15px rgba(18, 214, 240, 0.25) !important;
}

/* Distinct styling for Login nav link */
.nav-link[href*="login"],
a[href*="login"]#a {
  border: 1px solid rgba(18, 214, 240, 0.4) !important;
  background: rgba(18, 214, 240, 0.08) !important;
  color: #ffffff !important;
}
.nav-link[href*="login"]:hover,
a[href*="login"]#a:hover {
  background: rgba(18, 214, 240, 0.22) !important;
  border-color: var(--st-cyan) !important;
  box-shadow: 0 0 15px rgba(18, 214, 240, 0.3) !important;
  color: #ffffff !important;
}

/* Distinct styling for Register nav link */
.nav-link[href*="register"],
a[href*="register"]#a {
  background: linear-gradient(135deg, var(--st-mint), var(--st-cyan-2)) !important;
  color: #052318 !important;
  font-weight: 600 !important;
  border: none !important;
  box-shadow: 0 4px 15px rgba(18, 214, 240, 0.25) !important;
}
.nav-link[href*="register"]:hover,
a[href*="register"]#a:hover {
  filter: brightness(1.1) !important;
  transform: translateY(-1px) !important;
  box-shadow: 0 6px 20px rgba(18, 214, 240, 0.4) !important;
  color: #052318 !important;
}

.navbar-toggler {
  border-color: rgba(255,255,255,0.35) !important;
  padding: 0.4rem 0.65rem !important;
  color: #fff !important;
}
.navbar-toggler-icon { filter: invert(1) grayscale(1) brightness(1.6); }

/* ---------------------------------------------------------------
   Glass Cards & Surfaces — Translucent Frosted Glass Across All Pages
--------------------------------------------------------------- */
#col, #con, .div,
#about-section, #contact-info, #team, #terms-section, #container,
.rounded-container, .announcements, .section-card,
.card, .challenge-card, .member-card, .profile-card,
.login-box, .login-left, .login-right, .dashboard-header,
.container.rules-container, .rules-container, .score-section,
.chat-box, .modal-content, .msg-block, .alert, .form-section {
  position: relative;
  background: var(--st-glass-bg) !important;
  -webkit-backdrop-filter: blur(var(--st-blur)) saturate(160%) !important;
  backdrop-filter: blur(var(--st-blur)) saturate(160%) !important;
  border: 1px solid var(--st-glass-border) !important;
  border-radius: var(--st-radius-lg) !important;
  box-shadow: var(--st-glass-shadow) !important;
  color: var(--st-text) !important;
  overflow: hidden;
}

/* .chat-box needs its own scrollable message list, so it opts back out of
   the shared "overflow: hidden" above (that rule was clipping the chat
   history and hiding its scrollbar entirely) while keeping the same glass
   look. Vertical scrolling is restored here, with a visible themed
   scrollbar instead of the browser default. */
.chat-box {
  overflow-y: auto !important;
  overflow-x: hidden !important;
}
.chat-box::-webkit-scrollbar {
  width: 8px;
}
.chat-box::-webkit-scrollbar-track {
  background: rgba(255,255,255,0.04);
  border-radius: 8px;
}
.chat-box::-webkit-scrollbar-thumb {
  background: rgba(18,214,240,0.45);
  border-radius: 8px;
}
.chat-box::-webkit-scrollbar-thumb:hover {
  background: rgba(18,214,240,0.7);
}
.chat-box {
  scrollbar-width: thin;
  scrollbar-color: rgba(18,214,240,0.45) rgba(255,255,255,0.04);
}

/* Subtle diagonal sheen across glass cards */
#col::after, #con::after,
#about-section::after, #contact-info::after, #team::after, #terms-section::after, #container::after,
.card::after, .challenge-card::after, .member-card::after, .profile-card::after,
.login-box::after, .dashboard-header::after, .rules-container::after,
.score-section::after, .chat-box::after, .modal-content::after,
.rounded-container::after, .announcements::after, .section-card::after,
.form-section::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0) 35%);
  z-index: 0;
}

#col > *, #con > *, #about-section > *, #contact-info > *, #team > *, #terms-section > *,
#container > *, .card > *, .challenge-card > *, .member-card > *, .profile-card > *,
.rounded-container > *, .announcements > *, .section-card > *, .form-section > * {
  position: relative;
  z-index: 1;
}

.challenge-card, .member-card, .rounded-container, .profile-card, .section-card, .announcements {
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease !important;
}

.challenge-card:hover, .member-card:hover, .rounded-container:hover, .section-card:hover, .announcements:hover {
  transform: translateY(-4px);
  border-color: rgba(18,214,240,0.5) !important;
  box-shadow: 0 16px 48px rgba(0,0,0,0.5), 0 0 20px rgba(18,214,240,0.2) !important;
}

/* ---------------------------------------------------------------
   Buttons & Inputs
--------------------------------------------------------------- */
.btn {
  border-radius: 999px !important;
  font-weight: 600;
  letter-spacing: .2px;
  transition: transform .2s ease, box-shadow .2s ease, filter .2s ease;
}
.btn:hover { transform: translateY(-2px); filter: brightness(1.08); }
.btn:active { transform: translateY(0); }

.btn-success, .btn-login, .btn-submit, .btn-custom.btn-success {
  background: linear-gradient(135deg, var(--st-mint), var(--st-cyan-2)) !important;
  border: none !important;
  color: #052318 !important;
  box-shadow: 0 6px 22px rgba(18,214,240,0.28);
}
.btn-primary {
  background: linear-gradient(135deg, var(--st-cyan), var(--st-cyan-2)) !important;
  border: none !important;
  color: #041c29 !important;
  font-weight: 600 !important;
  box-shadow: 0 6px 22px rgba(18,214,240,0.3);
}
.btn-outline-light, .btn-outline-info, .btn-custom {
  background: rgba(255,255,255,0.06) !important;
  border: 1px solid rgba(255,255,255,0.35) !important;
  color: var(--st-text) !important;
}
.btn-outline-light:hover, .btn-outline-info:hover {
  background: rgba(255,255,255,0.14) !important;
  color: #fff !important;
}
.btn-edit {
  background: linear-gradient(135deg, var(--st-cyan), var(--st-cyan-2)) !important;
  border: none !important;
  color: #041c29 !important;
  font-weight: 600 !important;
  box-shadow: 0 4px 18px rgba(18,214,240,0.3) !important;
}
.btn-secondary {
  background: rgba(255,255,255,0.10) !important;
  border: 1px solid rgba(255,255,255,0.25) !important;
  color: var(--st-text) !important;
}

.form-control, .form-select {
  background: rgba(255,255,255,0.07) !important;
  border: 1px solid rgba(255,255,255,0.20) !important;
  color: var(--st-text) !important;
  border-radius: var(--st-radius-sm) !important;
}
.form-control::placeholder { color: var(--st-text-dim); }
.form-control:focus, .form-select:focus {
  background: rgba(255,255,255,0.12) !important;
  border-color: var(--st-cyan) !important;
  box-shadow: 0 0 0 .2rem rgba(18,214,240,0.20) !important;
  color: #fff !important;
}
/* The dropdown POPUP list itself is rendered by the browser/OS with a
   white background that our dark theme can't override — so force the
   option text to dark here, otherwise it inherits the light theme
   colour above and becomes invisible white-on-white. */
.form-select option {
  color: #1a2733 !important;
  background-color: #ffffff !important;
}

/* ---------------------------------------------------------------
   Tables & Footers
--------------------------------------------------------------- */
.table {
  color: var(--st-text) !important;
  --bs-table-bg: transparent;
  border-color: rgba(255,255,255,0.12) !important;
}
.table thead, .table-primary {
  background: rgba(18,214,240,0.14) !important;
  color: var(--st-text) !important;
}
.table-striped > tbody > tr:nth-of-type(odd) > * {
  background: rgba(255,255,255,0.035) !important;
  color: var(--st-text) !important;
}

.footer, #con, footer {
  border-top: 1px solid rgba(255,255,255,0.10);
  background: var(--st-glass-bg-soft) !important;
  -webkit-backdrop-filter: blur(var(--st-blur)) saturate(150%);
  backdrop-filter: blur(var(--st-blur)) saturate(150%);
  color: var(--st-text) !important;
  margin-top: 60px !important;
  padding: 24px 0 !important;
}

@media (max-width: 991.98px) {
  #nav .collapse.navbar-collapse,
  nav.navbar .collapse.navbar-collapse {
    background: rgba(6, 18, 28, 0.95) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    backdrop-filter: blur(20px) !important;
    border-radius: var(--st-radius-md) !important;
    padding: 1rem !important;
    margin-top: 0.5rem !important;
    border: 1px solid rgba(255, 255, 255, 0.12) !important;
  }
}