/* ============================================
   Fund.EngineersTechBD.com – Main Stylesheet
   Dark theme with green accent
   ============================================ */

:root {
  --accent: #00d4aa;
  --accent-hover: #00b894;
  --accent-glow: rgba(0, 212, 170, 0.15);
  --dark-bg: #0a0f1c;
  --dark-surface: #111827;
  --dark-card: #1a2236;
  --dark-border: #2a3450;
  --text-primary: #f0f4f8;
  --text-secondary: #94a3b8;
  --gradient-accent: linear-gradient(135deg, #00d4aa 0%, #00b4d8 100%);
  --gradient-hero: linear-gradient(180deg, #0a0f1c 0%, #111827 50%, #0d1525 100%);
}

* { box-sizing: border-box; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--dark-bg);
  color: var(--text-primary);
  overflow-x: hidden;
}

h1,h2,h3,h4,h5,h6 { font-family: 'Space Grotesk', sans-serif; }

/* Accent utilities */
.text-accent { color: var(--accent) !important; }
.bg-accent { background: var(--accent) !important; }
.border-accent { border-color: var(--accent) !important; }
.btn-accent {
  background: var(--gradient-accent);
  color: #0a0f1c;
  border: none;
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.3s;
}
.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--accent-glow);
  color: #0a0f1c;
}
.btn-outline-accent {
  border: 1.5px solid var(--accent);
  color: var(--accent);
  background: transparent;
  border-radius: 8px;
  font-weight: 500;
  transition: all 0.3s;
}
.btn-outline-accent:hover {
  background: var(--accent);
  color: #0a0f1c;
}

/* Glass navbar */
.glass-nav {
  background: rgba(10, 15, 28, 0.85) !important;
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--dark-border);
  padding: 0.5rem 0;
}
.brand-text {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Cards */
.dark-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: 16px;
  transition: all 0.3s;
}
.dark-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 30px var(--accent-glow);
  transform: translateY(-4px);
}

/* Hero */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}
.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent-glow);
  border: 1px solid rgba(0,212,170,0.3);
  border-radius: 50px;
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
}
.hero-title {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.hero-title .highlight {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Stats */
.stat-card {
  text-align: center;
  padding: 1.5rem;
}
.stat-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

/* Section styling */
.section-dark {
  background: var(--dark-bg);
  padding: 5rem 0;
}
.section-surface {
  background: var(--dark-surface);
  padding: 5rem 0;
}
.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}
.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 3rem;
}

/* Feature cards */
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

/* Match cards */
.match-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: 16px;
  padding: 1.5rem;
  transition: all 0.3s;
}
.match-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}
.match-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: #0a0f1c;
}
.verified-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: rgba(0,212,170,0.15);
  color: var(--accent);
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 50px;
  font-weight: 500;
}
.stage-badge {
  display: inline-block;
  background: rgba(99,102,241,0.15);
  color: #818cf8;
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
  font-weight: 500;
}
.locked-overlay {
  position: relative;
}
.locked-overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(10,15,28,0.6);
  backdrop-filter: blur(3px);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Chat */
.chat-list {
  max-height: calc(100vh - 250px);
  overflow-y: auto;
}
.chat-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  cursor: pointer;
  transition: background 0.2s;
}
.chat-item:hover, .chat-item.active {
  background: var(--dark-card);
}
.chat-messages {
  max-height: calc(100vh - 300px);
  overflow-y: auto;
  padding: 1rem;
}
.msg-bubble {
  max-width: 70%;
  padding: 0.75rem 1rem;
  border-radius: 16px;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  line-height: 1.4;
}
.msg-sent {
  background: var(--accent);
  color: #0a0f1c;
  margin-left: auto;
  border-bottom-right-radius: 4px;
}
.msg-received {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-bottom-left-radius: 4px;
}
.msg-time {
  font-size: 0.7rem;
  color: var(--text-secondary);
  margin-top: 0.15rem;
}

/* Dashboard */
.dash-stat {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: 16px;
  padding: 1.5rem;
}
.dash-stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
}

/* Forms */
.form-control, .form-select {
  background: var(--dark-card) !important;
  border: 1px solid var(--dark-border) !important;
  color: var(--text-primary) !important;
  border-radius: 10px !important;
  padding: 0.6rem 1rem !important;
}
.form-control:focus, .form-select:focus {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 3px var(--accent-glow) !important;
}
.form-control::placeholder { color: var(--text-secondary) !important; }
.form-label { color: var(--text-secondary); font-weight: 500; font-size: 0.9rem; }

/* Auth pages */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  padding-top: 80px;
  background: var(--gradient-hero);
}
.auth-card {
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-radius: 20px;
  padding: 2.5rem;
  width: 100%;
  max-width: 460px;
}

/* Flash container */
.flash-container {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 9999;
  max-width: 400px;
}

/* Admin */
.admin-sidebar {
  background: var(--dark-surface);
  border-right: 1px solid var(--dark-border);
  min-height: 100vh;
  padding-top: 80px;
  width: 260px;
  position: fixed;
  top: 0;
  left: 0;
}
.admin-sidebar .nav-link {
  color: var(--text-secondary);
  padding: 0.7rem 1.5rem;
  border-radius: 8px;
  margin: 0.15rem 0.75rem;
  font-size: 0.9rem;
  transition: all 0.2s;
}
.admin-sidebar .nav-link:hover,
.admin-sidebar .nav-link.active {
  background: var(--accent-glow);
  color: var(--accent);
}
.admin-content {
  margin-left: 260px;
  padding: 100px 2rem 2rem;
  min-height: 100vh;
}

/* Responsive */
@media (max-width: 991.98px) {
  .admin-sidebar { display: none; }
  .admin-content { margin-left: 0; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark-bg); }
::-webkit-scrollbar-thumb { background: var(--dark-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* Animations */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-up { animation: fadeInUp 0.6s ease forwards; }
.animate-up-delay { animation: fadeInUp 0.6s ease 0.2s forwards; opacity: 0; }

/* Dropdown dark */
.dropdown-menu-dark {
  background: var(--dark-card) !important;
  border: 1px solid var(--dark-border) !important;
}

/* Table */
.table-dark-custom {
  --bs-table-bg: var(--dark-card);
  --bs-table-border-color: var(--dark-border);
  color: var(--text-primary);
}