/* !BBMSG application styles */

:root {
  --brand-orange: #F25C1F;
  --brand-orange-dark: #C44A18;
  --brand-orange-light: #FF7A40;
  --brand-black: #0A0A0A;
  --brand-white: #FFFFFF;
  --neutral-900: #1A1A1A;
  --neutral-700: #4A4A4A;
  --neutral-500: #6B7280;
  --neutral-400: #9CA3AF;
  --neutral-300: #D1D5DB;
  --neutral-200: #E5E7EB;
  --neutral-100: #F5F5F5;
  --neutral-50:  #FAFAFA;
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #DC2626;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
  --radius-sm: 4px;
  --radius: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

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

html, body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  color: var(--neutral-900);
  background: var(--neutral-100);
  line-height: 1.6;
  font-size: 16px;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 .5em;
  color: var(--brand-black);
}
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
.display-hero {
  font-weight: 800;
  font-size: clamp(2.25rem, 5vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

a { color: var(--brand-orange); text-decoration: none; }
a:hover { color: var(--brand-orange-dark); }

/* Brand mark */
.brand-mark {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.03em;
  color: var(--brand-white);
  text-transform: uppercase;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.brand-mark .bang { color: var(--brand-orange); margin-right: 2px; }
.brand-mark-dark { color: var(--brand-black); }
.brand-mark-lg { font-size: 2rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .65rem 1.15rem;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .15s ease;
  text-decoration: none;
  line-height: 1.2;
  white-space: nowrap;
}
.btn:focus-visible { outline: 2px solid var(--brand-orange); outline-offset: 2px; }
.btn-primary { background: var(--brand-orange); color: var(--brand-white); }
.btn-primary:hover { background: var(--brand-orange-dark); color: var(--brand-white); }
.btn-secondary { background: var(--brand-black); color: var(--brand-white); border-color: var(--brand-black); }
.btn-secondary:hover { background: #222; color: var(--brand-white); }
.btn-outline { background: transparent; color: var(--brand-black); border-color: var(--brand-black); }
.btn-outline:hover { background: var(--brand-black); color: var(--brand-white); }
.btn-outline-orange { background: transparent; color: var(--brand-orange); border-color: var(--brand-orange); }
.btn-outline-orange:hover { background: var(--brand-orange); color: var(--brand-white); }
.btn-ghost { background: transparent; color: var(--neutral-700); }
.btn-ghost:hover { background: var(--neutral-100); color: var(--brand-black); }
.btn-danger { background: var(--danger); color: var(--brand-white); }
.btn-danger:hover { background: #B91C1C; color: var(--brand-white); }
.btn-sm { padding: .4rem .8rem; font-size: .85rem; }
.btn-lg { padding: .9rem 1.5rem; font-size: 1.05rem; }
.btn[disabled], .btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-block { display: flex; justify-content: center; width: 100%; }

/* Forms */
.form-control, .form-select {
  display: block;
  width: 100%;
  padding: .65rem .85rem;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--brand-black);
  background: var(--brand-white);
  border: 1px solid var(--neutral-300);
  border-radius: var(--radius);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.form-control:focus, .form-select:focus {
  outline: 0;
  border-color: var(--brand-orange);
  box-shadow: 0 0 0 3px rgba(242, 92, 31, 0.15);
}
.form-control.is-invalid { border-color: var(--danger); }
.form-label { font-weight: 600; font-size: .9rem; margin-bottom: .35rem; display: block; }
.form-help { font-size: .85rem; color: var(--neutral-500); margin-top: .25rem; }
.invalid-feedback { color: var(--danger); font-size: .85rem; margin-top: .25rem; display: block; }
.form-check { display: flex; align-items: flex-start; gap: .5rem; }
.form-check-input { margin-top: .25rem; }
textarea.form-control { min-height: 120px; resize: vertical; }

/* Cards */
.card {
  background: var(--brand-white);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow .15s ease, transform .15s ease;
}
.card:hover { box-shadow: var(--shadow-md); }
.card-body { padding: 1.25rem; }
.card-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--neutral-200);
  font-weight: 700;
}
.card-footer { padding: .75rem 1.25rem; border-top: 1px solid var(--neutral-200); }

/* Navbar */
.bbm-navbar {
  background: var(--brand-black);
  color: var(--brand-white);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
.bbm-navbar .container { display: flex; align-items: center; gap: 1.5rem; padding: .8rem 1rem; max-width: 1280px; margin: 0 auto; }
.bbm-nav-links { display: flex; gap: 1.25rem; flex: 1; }
.bbm-nav-links a {
  color: var(--neutral-300);
  font-weight: 500;
  font-size: .95rem;
  padding: .35rem 0;
  border-bottom: 2px solid transparent;
  transition: all .15s ease;
}
.bbm-nav-links a:hover { color: var(--brand-white); }
.bbm-nav-links a.active { color: var(--brand-orange); border-bottom-color: var(--brand-orange); }
.bbm-nav-right { display: flex; align-items: center; gap: 1rem; }
.bbm-nav-toggle { display: none; background: transparent; border: 0; color: var(--brand-white); font-size: 1.5rem; cursor: pointer; }
@media (max-width: 768px) {
  .bbm-nav-links { display: none; }
  .bbm-nav-toggle { display: block; }
  .bbm-navbar.open .bbm-nav-links { display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: var(--brand-black); padding: 1rem; gap: 1rem; }
}

/* Mobile bottom nav */
.bbm-mobile-nav {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--brand-black);
  z-index: 1000;
  border-top: 1px solid #222;
}
.bbm-mobile-nav a {
  flex: 1;
  text-align: center;
  padding: .6rem 0;
  color: var(--neutral-300);
  font-size: .7rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.bbm-mobile-nav a.active { color: var(--brand-orange); }
.bbm-mobile-nav i { font-size: 1.25rem; }
@media (max-width: 768px) {
  .bbm-mobile-nav { display: flex; }
  body { padding-bottom: 60px; }
}

/* Avatars */
.avatar {
  display: inline-block;
  border-radius: 50%;
  object-fit: cover;
  vertical-align: middle;
  background: var(--neutral-200);
}
.avatar-placeholder {
  background: var(--brand-orange);
  color: var(--brand-white);
  text-align: center;
  font-weight: 700;
}
.avatar-sm { width: 32px; height: 32px; font-size: .75rem; }
.avatar-md { width: 48px; height: 48px; font-size: 1rem; }
.avatar-lg { width: 80px; height: 80px; font-size: 1.25rem; }
.avatar-xl { width: 160px; height: 160px; font-size: 2rem; }

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: .25rem .6rem;
  font-size: .75rem;
  font-weight: 600;
  border-radius: 999px;
  background: var(--neutral-200);
  color: var(--neutral-900);
  white-space: nowrap;
}
.badge-orange { background: var(--brand-orange); color: var(--brand-white); }
.badge-black { background: var(--brand-black); color: var(--brand-white); }
.badge-outline { background: transparent; border: 1px solid var(--neutral-300); color: var(--neutral-700); }
.badge-success { background: var(--success); color: var(--brand-white); }
.badge-warning { background: var(--warning); color: var(--brand-white); }
.badge-danger { background: var(--danger); color: var(--brand-white); }

/* Layout helpers */
.container-bbm { max-width: 1280px; margin: 0 auto; padding: 0 1rem; }
.container-narrow { max-width: 720px; margin: 0 auto; padding: 0 1rem; }
.container-medium { max-width: 960px; margin: 0 auto; padding: 0 1rem; }
.page { padding: 2rem 0; min-height: calc(100vh - 64px - 80px); }
.page-header { margin-bottom: 2rem; display: flex; justify-content: space-between; align-items: flex-end; gap: 1rem; flex-wrap: wrap; }
.page-header h1 { margin: 0; }

/* Footer */
.bbm-footer {
  background: var(--brand-black);
  color: var(--neutral-400);
  padding: 1.5rem 0;
  font-size: .85rem;
  margin-top: 3rem;
}
.bbm-footer .container { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; max-width: 1280px; margin: 0 auto; padding: 0 1rem; }
.bbm-footer a { color: var(--neutral-300); }
.bbm-footer a:hover { color: var(--brand-white); }

/* Flash / alerts */
.flash-container { position: fixed; top: 80px; right: 1rem; z-index: 1100; display: flex; flex-direction: column; gap: .5rem; max-width: 360px; }
.flash {
  padding: .75rem 1rem;
  border-radius: var(--radius);
  background: var(--brand-white);
  border-left: 4px solid var(--brand-orange);
  box-shadow: var(--shadow-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.flash-success { border-left-color: var(--success); }
.flash-error { border-left-color: var(--danger); }
.flash-warning { border-left-color: var(--warning); }
.flash button { background: transparent; border: 0; color: var(--neutral-500); cursor: pointer; }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--neutral-500);
}
.empty-state i { font-size: 3rem; color: var(--neutral-400); margin-bottom: 1rem; }

/* Notification bell */
.bbm-bell { position: relative; color: var(--brand-white); font-size: 1.25rem; padding: .5rem; background: transparent; border: 0; cursor: pointer; }
.bbm-bell-badge {
  position: absolute;
  top: 2px; right: 2px;
  background: var(--brand-orange);
  color: var(--brand-white);
  font-size: .65rem;
  font-weight: 700;
  width: 18px; height: 18px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--brand-black);
}
.bbm-bell-badge:empty { display: none; }
.bbm-notif-dropdown {
  position: absolute;
  top: 100%; right: 0;
  background: var(--brand-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  width: 360px;
  max-width: calc(100vw - 2rem);
  z-index: 1100;
  overflow: hidden;
  display: none;
}
.bbm-notif-dropdown.open { display: block; }
.bbm-notif-dropdown .notif-header { padding: .75rem 1rem; border-bottom: 1px solid var(--neutral-200); display: flex; justify-content: space-between; align-items: center; font-weight: 700; color: var(--brand-black); }
.bbm-notif-dropdown .notif-list { max-height: 400px; overflow-y: auto; }
.bbm-notif-dropdown .notif-item { padding: .75rem 1rem; border-bottom: 1px solid var(--neutral-100); display: flex; gap: .75rem; color: var(--brand-black); }
.bbm-notif-dropdown .notif-item.unread { background: #FFF7F1; }
.bbm-notif-dropdown .notif-item:hover { background: var(--neutral-50); }
.bbm-notif-dropdown .notif-footer { padding: .5rem 1rem; text-align: center; border-top: 1px solid var(--neutral-200); }

/* Profile dropdown */
.bbm-user-menu { position: relative; }
.bbm-user-trigger { background: transparent; border: 0; padding: 0; cursor: pointer; }
.bbm-user-dropdown {
  position: absolute;
  top: 100%; right: 0;
  background: var(--brand-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  z-index: 1100;
  overflow: hidden;
  display: none;
}
.bbm-user-dropdown.open { display: block; }
.bbm-user-dropdown a, .bbm-user-dropdown button {
  display: block;
  padding: .65rem 1rem;
  color: var(--brand-black);
  font-size: .95rem;
  text-decoration: none;
  background: transparent;
  border: 0;
  width: 100%;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
}
.bbm-user-dropdown a:hover, .bbm-user-dropdown button:hover { background: var(--neutral-100); }
.bbm-user-dropdown hr { margin: .25rem 0; border: 0; border-top: 1px solid var(--neutral-200); }

/* Feed post */
.feed-post { background: var(--brand-white); border: 1px solid var(--neutral-200); border-radius: var(--radius-lg); padding: 1.25rem; margin-bottom: 1.5rem; }
.feed-post-header { display: flex; align-items: center; gap: .75rem; margin-bottom: .75rem; }
.feed-post-header .meta { flex: 1; }
.feed-post-header .meta strong { display: block; color: var(--brand-black); }
.feed-post-header .meta small { color: var(--neutral-500); font-size: .8rem; }
.feed-post-body { font-size: 1rem; white-space: pre-wrap; word-wrap: break-word; margin-bottom: .75rem; }
.feed-post-image { margin: .75rem 0; }
.feed-post-image img { width: 100%; max-height: 600px; object-fit: cover; border-radius: var(--radius-md); }
.feed-post-link {
  display: flex;
  gap: 1rem;
  margin: .75rem 0;
  padding: .75rem;
  background: var(--neutral-50);
  border-radius: var(--radius-md);
  border: 1px solid var(--neutral-200);
  text-decoration: none;
  color: inherit;
}
.feed-post-link img { width: 80px; height: 80px; object-fit: cover; border-radius: var(--radius); flex-shrink: 0; }
.feed-post-link .lp-body strong { display: block; color: var(--brand-black); }
.feed-post-link .lp-body small { color: var(--neutral-500); }
.feed-post-actions {
  display: flex;
  gap: 1rem;
  padding: .5rem 0;
  border-top: 1px solid var(--neutral-200);
  border-bottom: 1px solid var(--neutral-200);
  margin-bottom: .75rem;
}
.feed-post-actions button {
  flex: 1;
  background: transparent;
  border: 0;
  padding: .5rem;
  cursor: pointer;
  color: var(--neutral-700);
  font-weight: 600;
  font-family: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .35rem;
  border-radius: var(--radius);
}
.feed-post-actions button:hover { background: var(--neutral-100); color: var(--brand-black); }
.feed-post-actions button.liked { color: var(--brand-orange); }
.feed-comment { display: flex; gap: .65rem; margin: .5rem 0; }
.feed-comment .body { background: var(--neutral-100); padding: .5rem .75rem; border-radius: var(--radius-md); flex: 1; }
.feed-comment .body strong { font-size: .85rem; display: block; margin-bottom: .15rem; }

/* Directory grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}
.directory-card { padding: 1.25rem; text-align: center; }
.directory-card .avatar { margin: 0 auto .75rem; }
.directory-card strong { display: block; font-size: 1.05rem; color: var(--brand-black); }
.directory-card .biz { color: var(--neutral-700); font-size: .9rem; margin-top: .15rem; }
.directory-card .tagline { color: var(--neutral-500); font-size: .85rem; margin: .5rem 0; font-style: italic; }
.directory-card .skills { display: flex; gap: .25rem; justify-content: center; flex-wrap: wrap; margin: .5rem 0; }

/* Course card */
.course-card { overflow: hidden; padding: 0; }
.course-card .cover { aspect-ratio: 16/9; background: var(--neutral-200); overflow: hidden; }
.course-card .cover img { width: 100%; height: 100%; object-fit: cover; }
.course-card .body { padding: 1rem 1.25rem 1.25rem; }
.course-card h3 { font-size: 1.1rem; margin-bottom: .35rem; }
.course-card .meta { display: flex; align-items: center; gap: .5rem; margin: .5rem 0; font-size: .85rem; color: var(--neutral-700); }
.course-card .stats { display: flex; gap: 1rem; font-size: .85rem; color: var(--neutral-500); }
.stars { color: var(--brand-orange); letter-spacing: 2px; }

/* Messages */
.messages-layout { display: grid; grid-template-columns: 320px 1fr; min-height: 600px; background: var(--brand-white); border-radius: var(--radius-lg); border: 1px solid var(--neutral-200); overflow: hidden; }
.messages-inbox { border-right: 1px solid var(--neutral-200); overflow-y: auto; max-height: 80vh; }
.messages-thread { display: flex; flex-direction: column; max-height: 80vh; }
.conv-item { display: flex; gap: .75rem; padding: .85rem 1rem; border-bottom: 1px solid var(--neutral-100); text-decoration: none; color: inherit; }
.conv-item:hover { background: var(--neutral-50); }
.conv-item.active { background: var(--neutral-100); }
.conv-item .meta { flex: 1; min-width: 0; }
.conv-item .meta strong { color: var(--brand-black); display: block; }
.conv-item .meta .preview { color: var(--neutral-500); font-size: .85rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.conv-item .unread-badge { background: var(--brand-orange); color: var(--brand-white); border-radius: 999px; padding: .15rem .5rem; font-size: .7rem; font-weight: 700; }
.thread-header { padding: 1rem 1.25rem; border-bottom: 1px solid var(--neutral-200); display: flex; align-items: center; gap: .75rem; }
.thread-messages { flex: 1; overflow-y: auto; padding: 1rem 1.25rem; display: flex; flex-direction: column; gap: .5rem; }
.msg-bubble { max-width: 70%; padding: .6rem .9rem; border-radius: var(--radius-md); word-wrap: break-word; }
.msg-bubble.mine { background: var(--brand-orange); color: var(--brand-white); align-self: flex-end; border-bottom-right-radius: 2px; }
.msg-bubble.theirs { background: var(--neutral-100); color: var(--brand-black); align-self: flex-start; border-bottom-left-radius: 2px; }
.msg-bubble .ts { font-size: .7rem; opacity: .7; display: block; margin-top: .25rem; }
.msg-bubble a { color: inherit; text-decoration: underline; }
.msg-attachment { display: flex; gap: .5rem; align-items: center; padding: .5rem; background: rgba(255,255,255,0.2); border-radius: var(--radius); margin-top: .25rem; }
.msg-bubble.theirs .msg-attachment { background: rgba(0,0,0,0.05); }
.msg-attachment img { max-width: 200px; max-height: 200px; border-radius: var(--radius); }
.thread-composer { border-top: 1px solid var(--neutral-200); padding: 1rem 1.25rem; display: flex; gap: .5rem; align-items: flex-end; }
.thread-composer textarea { flex: 1; resize: none; min-height: 44px; max-height: 120px; }
@media (max-width: 768px) {
  .messages-layout { grid-template-columns: 1fr; }
  .messages-inbox { display: var(--inbox-display, block); }
  .messages-thread { display: var(--thread-display, none); }
}

/* Course detail */
.course-hero { background: var(--brand-black); color: var(--brand-white); padding: 2.5rem 0; margin-bottom: 2rem; }
.course-hero h1 { color: var(--brand-white); }
.course-hero .creator-strip { display: flex; align-items: center; gap: .75rem; margin-top: 1rem; }
.lesson-list { background: var(--brand-white); border-radius: var(--radius-lg); border: 1px solid var(--neutral-200); overflow: hidden; }
.lesson-list .lesson-row { padding: .85rem 1.25rem; border-bottom: 1px solid var(--neutral-200); display: flex; align-items: center; gap: .75rem; text-decoration: none; color: inherit; }
.lesson-list .lesson-row:hover { background: var(--neutral-50); }
.lesson-list .lesson-row.completed .lesson-title { color: var(--neutral-500); }
.lesson-list .lesson-row .completion-icon { color: var(--success); }
.lesson-list .lesson-row .lesson-num { width: 28px; height: 28px; border-radius: 50%; background: var(--neutral-200); color: var(--neutral-700); display: flex; align-items: center; justify-content: center; font-size: .85rem; font-weight: 700; flex-shrink: 0; }
.lesson-list .lesson-row .lesson-title { flex: 1; font-weight: 500; }
.video-frame { aspect-ratio: 16/9; background: #000; border-radius: var(--radius-lg); overflow: hidden; }
.video-frame iframe { width: 100%; height: 100%; border: 0; }

/* Admin layout */
.admin-shell { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.admin-sidebar { background: var(--brand-black); color: var(--brand-white); padding: 1.5rem 0; }
.admin-sidebar a { display: block; padding: .65rem 1.25rem; color: var(--neutral-300); border-left: 3px solid transparent; }
.admin-sidebar a:hover { background: #1a1a1a; color: var(--brand-white); }
.admin-sidebar a.active { background: #1a1a1a; color: var(--brand-orange); border-left-color: var(--brand-orange); }
.admin-sidebar .section-label { padding: 1rem 1.25rem .25rem; font-size: .7rem; color: var(--neutral-500); text-transform: uppercase; letter-spacing: 0.05em; }
.admin-content { padding: 2rem; }
@media (max-width: 768px) { .admin-shell { grid-template-columns: 1fr; } .admin-sidebar { display: none; } }

/* Tables */
.table { width: 100%; border-collapse: collapse; background: var(--brand-white); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); }
.table th { text-align: left; padding: .85rem 1rem; background: var(--neutral-50); border-bottom: 1px solid var(--neutral-200); font-weight: 700; font-size: .85rem; }
.table td { padding: .85rem 1rem; border-bottom: 1px solid var(--neutral-100); vertical-align: middle; }
.table tr:last-child td { border-bottom: 0; }
.table tr:hover { background: var(--neutral-50); }

/* Pagination */
.pagination { display: flex; justify-content: center; gap: .35rem; margin-top: 2rem; }
.pagination a, .pagination span {
  padding: .4rem .8rem;
  border-radius: var(--radius);
  background: var(--brand-white);
  border: 1px solid var(--neutral-200);
  color: var(--brand-black);
  font-weight: 600;
  font-size: .9rem;
}
.pagination a:hover { border-color: var(--brand-orange); color: var(--brand-orange); }
.pagination .active { background: var(--brand-orange); color: var(--brand-white); border-color: var(--brand-orange); }
.pagination .disabled { opacity: .5; pointer-events: none; }

/* Misc */
.alert { padding: .85rem 1rem; border-radius: var(--radius); border: 1px solid; margin-bottom: 1rem; }
.alert-info { background: #EFF6FF; border-color: #BFDBFE; color: #1E40AF; }
.alert-warning { background: #FFFBEB; border-color: #FDE68A; color: #92400E; }
.alert-success { background: #ECFDF5; border-color: #A7F3D0; color: #065F46; }
.alert-danger { background: #FEF2F2; border-color: #FECACA; color: #991B1B; }

.mb-1 { margin-bottom: .5rem; } .mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 1.5rem; } .mb-4 { margin-bottom: 2rem; }
.mt-1 { margin-top: .5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.5rem; } .mt-4 { margin-top: 2rem; }
.text-center { text-align: center; }
.text-muted { color: var(--neutral-500); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.d-flex { display: flex; }
.d-grid { display: grid; }
.gap-1 { gap: .5rem; } .gap-2 { gap: 1rem; } .gap-3 { gap: 1.5rem; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.w-100 { width: 100%; }
.hidden { display: none !important; }

@media (max-width: 600px) {
  body { font-size: 15px; }
  h1 { font-size: 1.75rem; }
  .page { padding: 1.5rem 0; }
}