/*
 * UC ConnectIT — Site Theme
 * Primary brand color: #e00122 (UC Red)
 * Matches the original React app's visual design.
 */

/* ─── Root Variables ──────────────────────────────────────────── */
:root {
  --uc-red:        #e00122;
  --uc-red-dark:   #c00120;
  --uc-red-darker: #8b0000;
  --uc-red-light:  #fff5f5;
  --uc-red-muted:  rgba(224, 1, 34, 0.1);
  --text-primary:  #333333;
  --text-secondary:#555555;
  --text-muted:    #666666;
  --text-light:    #999999;
  --border-color:  #e0e0e0;
  --bg-light:      #f5f5f5;
  --bg-card:       #ffffff;
  --shadow-sm:     0 2px 8px rgba(0,0,0,0.10);
  --shadow-md:     0 4px 12px rgba(0,0,0,0.15);
  --shadow-lg:     0 10px 25px rgba(0,0,0,0.20);
  --gradient-red:  linear-gradient(135deg, #e00122 0%, #c00120 100%);
  --gradient-login:linear-gradient(135deg, #dc143c 0%, #1a1a1a 100%);
  --radius-pill:   999px;
  --radius-lg:     16px;
  --radius-md:     12px;
  --radius-sm:     8px;
  --radius-xs:     6px;
  --transition:    0.2s ease;
}

/* ─── Global Reset / Base ─────────────────────────────────────── */
body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
               Helvetica, Arial, sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ─── Bootstrap Overrides: Primary → UC Red ───────────────────── */
.btn-primary {
  background-color: var(--uc-red);
  border-color: var(--uc-red);
}
.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
  background-color: var(--uc-red-dark) !important;
  border-color: var(--uc-red-dark) !important;
  box-shadow: 0 4px 8px rgba(224,1,34,0.25) !important;
}
.btn-outline-primary {
  color: var(--uc-red);
  border-color: var(--uc-red);
}
.btn-outline-primary:hover {
  background-color: var(--uc-red);
  border-color: var(--uc-red);
  color: #fff;
}
.text-primary { color: var(--uc-red) !important; }
.bg-primary   { background-color: var(--uc-red) !important; }
.border-primary { border-color: var(--uc-red) !important; }
.badge.bg-primary { background-color: var(--uc-red) !important; }

.form-control:focus, .form-select:focus {
  border-color: var(--uc-red);
  box-shadow: 0 0 0 3px var(--uc-red-muted);
}
.form-check-input:checked {
  background-color: var(--uc-red);
  border-color: var(--uc-red);
}
.form-switch .form-check-input:checked {
  background-color: var(--uc-red);
  border-color: var(--uc-red);
}

/* ─── Navbar (UC Red background) ──────────────────────────────── */
.uc-navbar {
  background-color: var(--uc-red);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1030;
}
.uc-navbar .navbar-brand {
  color: #fff;
  font-size: 1.15rem;
  font-weight: 600;
}
.uc-navbar .navbar-brand:hover { color: rgba(255,255,255,0.9); }
.uc-navbar .navbar-brand .brand-sub {
  display: block;
  font-size: 0.7rem;
  font-weight: 400;
  opacity: 0.9;
}
.uc-navbar .nav-link {
  color: rgba(255,255,255,0.9) !important;
  font-size: 0.92rem;
  font-weight: 500;
  border-radius: var(--radius-xs);
  padding: 0.55rem 1.1rem;
  transition: background var(--transition);
}
.uc-navbar .nav-link:hover {
  background-color: rgba(255,255,255,0.15);
  color: #fff !important;
}
.uc-navbar .nav-link.active {
  background-color: rgba(255,255,255,0.25);
}
.uc-navbar .navbar-toggler { border-color: rgba(255,255,255,0.4); }
.uc-navbar .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255%2C255%2C255%2C0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ─── Card Headers (Red Gradient) ────────────────────────────── */
.card-header-red {
  background: var(--gradient-red);
  height: 120px;
}
.card-header-red-lg {
  background: var(--gradient-red);
  height: 160px;
}
.card-header-red-profile {
  background: var(--gradient-red);
  height: 180px;
  position: relative;
  display: flex;
  justify-content: flex-end;
  align-items: flex-start;
  padding: 1.5rem;
}

/* ─── Avatar / Photo Circles ─────────────────────────────────── */
.uc-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 4px solid #fff;
  background-color: #f0f0f0;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #888;
  font-size: 2.5rem;
}
.uc-avatar-lg {
  width: 120px;
  height: 120px;
  border: 5px solid #fff;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.uc-avatar img { width: 100%; height: 100%; object-fit: cover; }

.avatar-overlap {
  margin-top: -50px;
}
.avatar-overlap-lg {
  margin-top: -60px;
}

/* ─── Mentor Cards ────────────────────────────────────────────── */
.mentor-card {
  border: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  overflow: hidden;
}
.mentor-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

/* ─── Interest Tags (cycling colors like original) ───────────── */
.tag { display:inline-block; padding:0.35rem 0.8rem; border-radius:var(--radius-pill); font-size:0.8rem; font-weight:500; }
.tag:nth-child(4n+1) { background-color:#e8f5e9; color:#2e7d32; }
.tag:nth-child(4n+2) { background-color:#e3f2fd; color:#1565c0; }
.tag:nth-child(4n+3) { background-color:#fff3e0; color:#e65100; }
.tag:nth-child(4n+4) { background-color:#f3e5f5; color:#6a1b9a; }
.tag-more { background-color:transparent; border:1px solid #ddd; color:#666; }
.tag-more:hover { border-color:var(--uc-red); color:var(--uc-red); }

/* Detail page tags (5-cycle) */
.tag5:nth-child(5n+1) { background-color:#d1f2eb; color:#0d7a5f; }
.tag5:nth-child(5n+2) { background-color:#d6eaf8; color:#1a5490; }
.tag5:nth-child(5n+3) { background-color:#fdebd0; color:#b8620b; }
.tag5:nth-child(5n+4) { background-color:#e8daef; color:#6c3483; }
.tag5:nth-child(5n+5) { background-color:#fadbd8; color:#922b21; }

/* Profile tags (5-cycle alt) */
.tagp:nth-child(5n+1) { background-color:#e3e8ff; color:#4056a1; }
.tagp:nth-child(5n+2) { background-color:#f3e8ff; color:#7c3aed; }
.tagp:nth-child(5n+3) { background-color:#dbeafe; color:#1e40af; }
.tagp:nth-child(5n+4) { background-color:#d1fae5; color:#065f46; }
.tagp:nth-child(5n+5) { background-color:#fef3c7; color:#92400e; }

/* ─── Info Cards (red-tinted bg) ─────────────────────────────── */
.info-card {
  background-color: var(--uc-red-light);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
}
.info-card .info-icon { color: var(--uc-red); font-size: 1.5rem; }
.info-card .info-label { font-size:0.8rem; font-weight:600; color:var(--uc-red); margin-bottom:0.2rem; }
.info-card .info-value { font-size:0.95rem; color:var(--text-secondary); }

/* ─── Login Page ─────────────────────────────────────────────── */
.login-bg {
  min-height: 100vh;
  background: var(--gradient-login);
}
.login-sidebar {
  background-color: #1a2332;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 3rem;
  color: #fff;
}
.login-sidebar h1 { font-size: 1.8rem; font-weight: 600; color: #fff; }
.login-sidebar .brand-sub { color: rgba(255,255,255,0.75); font-size: 0.95rem; margin-bottom: 2rem; }
.login-sidebar .feature-item { display:flex; align-items:center; gap:0.75rem; margin-bottom:1rem; color:rgba(255,255,255,0.85); font-size:0.95rem; }
.login-sidebar .feature-icon { color: var(--uc-red); font-size: 1.1rem; flex-shrink:0; }
.login-card {
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 2.5rem;
  max-width: 420px;
  width: 100%;
}
.login-card h2 { color:var(--text-primary); font-size:1.6rem; font-weight:600; }
.login-card .form-control { border: 2px solid var(--border-color); }
.login-card .form-control:focus { border-color: var(--uc-red); }
.login-card .btn-primary { background: var(--gradient-red); border:none; font-weight:600; padding:0.85rem; }
.login-card .btn-primary:hover { transform:translateY(-2px); box-shadow:0 5px 15px rgba(220,20,60,0.4) !important; }
.login-card .btn-outline-secondary { border:2px solid var(--uc-red); color:var(--uc-red); }
.login-card .btn-outline-secondary:hover { background:var(--uc-red); color:#fff; }

/* ─── Onboarding Page ────────────────────────────────────────── */
.onboard-sidebar {
  background-color: #1a2332;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 3rem 2rem;
  color: #fff;
}
.role-btn { border-radius: var(--radius-pill) !important; font-size:0.9rem; }
.role-btn.active, .role-btn.btn-primary {
  background-color: var(--uc-red) !important;
  border-color: var(--uc-red) !important;
  color: #fff !important;
}

/* ─── Stats Section ──────────────────────────────────────────── */
.stat-box { background:var(--uc-red-light); border-radius:var(--radius-sm); padding:1.5rem; text-align:center; }
.stat-number { font-size:2rem; font-weight:700; color:var(--uc-red); }
.stat-label { font-size:0.9rem; color:var(--text-muted); font-weight:500; }

/* ─── Messages Page ──────────────────────────────────────────── */
.conv-item { cursor:pointer; transition:background-color var(--transition); border-bottom:1px solid #f0f0f0; }
.conv-item:hover { background-color:#f8f8f8; }
.conv-item.active {
  background-color: var(--uc-red-light) !important;
  border-left: 3px solid var(--uc-red);
}
.msg-bubble-sent {
  background-color: var(--uc-red);
  color: #fff;
  border-radius: 12px 12px 2px 12px;
}
.msg-bubble-recv {
  background-color: #fff;
  border: 1px solid #e5e5e5;
  color: var(--text-primary);
  border-radius: 12px 12px 12px 2px;
}
.send-btn {
  background-color: var(--uc-red);
  border: none;
  border-radius: 50px;
  padding: 0.65rem 1.25rem;
  color: #fff;
  transition: background-color var(--transition);
}
.send-btn:hover { background-color: var(--uc-red-dark); }
.msg-input {
  border-radius: 50px;
  border: 1px solid #ddd;
  padding: 0.65rem 1.2rem;
}
.msg-input:focus { border-color: var(--uc-red); box-shadow: 0 0 0 3px var(--uc-red-muted); }
.unread-dot { width:10px; height:10px; background-color:var(--uc-red); border-radius:50%; flex-shrink:0; }

/* ─── Settings Page ──────────────────────────────────────────── */
.settings-section-icon { color: var(--uc-red); }
.settings-section .accordion-button:not(.collapsed) {
  color: var(--uc-red);
  background-color: var(--uc-red-light);
  box-shadow: none;
}
.settings-section .accordion-button:focus { box-shadow: 0 0 0 3px var(--uc-red-muted); }
.security-btn {
  display:block; width:100%; padding:0.85rem 1rem;
  background:none; border:1px solid #e5e5e5;
  border-radius:var(--radius-xs); text-align:left;
  color:var(--text-primary); cursor:pointer;
  transition: all var(--transition); margin-bottom:0.6rem;
}
.security-btn:hover { background:#f8f8f8; border-color:var(--uc-red); color:var(--uc-red); }

/* ─── Back Button ────────────────────────────────────────────── */
.btn-back { color:var(--uc-red); background:none; border:none; font-weight:500; cursor:pointer; padding:0.5rem 0; }
.btn-back:hover { opacity:0.75; }

/* ─── Section Headings ───────────────────────────────────────── */
.section-heading { font-size:1.25rem; font-weight:600; color:var(--text-primary); }
.section-subheading { font-size:0.9rem; color:var(--text-muted); }

/* ─── Filter selects (hover red border) ─────────────────────── */
.filter-select { cursor:pointer; }
.filter-select:hover { border-color: var(--uc-red); }

/* ─── Scrollbar styling ─────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #f1f1f1; }
::-webkit-scrollbar-thumb { background: #ccc; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #aaa; }