@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,wght@0,400;0,600;0,700;1,400&family=Inter:wght@300;400;500;600&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Warm ink-and-paper palette — not generic purple tech */
  --bg:       #f7f5f0;
  --surface:  #ffffff;
  --card:     #ffffff;
  --card2:    #f0ede6;
  --border:   #e2ddd4;
  --border2:  #c8c1b4;
  --sidebar:  #1c1917;
  --sidebar2: #292524;
  --sidebar3: #44403c;

  --accent:   #c2410c;   /* deep orange-red — authority, action */
  --accent2:  #ea580c;
  --accentlt: #fff1ec;
  --blue:     #1d4ed8;
  --bluelt:   #eff6ff;
  --green:    #15803d;
  --greenlt:  #f0fdf4;
  --amber:    #b45309;
  --amberlt:  #fffbeb;
  --purple:   #7c3aed;
  --purplelt: #f5f3ff;

  --success:  #16a34a;
  --warn:     #d97706;
  --danger:   #dc2626;

  --text:     #1c1917;
  --text2:    #57534e;
  --text3:    #a8a29e;
  --texti:    #ffffff;

  --font:    "Inter", sans-serif;
  --display: "Fraunces", serif;
  --r:  10px;
  --r2:  6px;
  --r3: 16px;

  --sidebar-w: 240px;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  font-size: 14px;
  overflow-x: hidden;
  line-height: 1.5;
}

button { font-family: var(--font); cursor: pointer; border: none; outline: none; }
input, textarea, select { font-family: var(--font); outline: none; border: none; background: transparent; }
a { text-decoration: none; color: inherit; }
strong { font-weight: 600; }

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 4px; }

/* ── SIDEBAR ── */
.sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  background: var(--sidebar);
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
  overflow-y: auto;
  z-index: 20;
  flex-shrink: 0;
}

.logo {
  padding: 20px 18px 16px;
  border-bottom: 1px solid var(--sidebar2);
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 30px; height: 30px;
  background: var(--accent);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--display); font-weight: 700; font-size: 15px; color: #fff;
  flex-shrink: 0; letter-spacing: -1px;
}

.logo-text {
  font-family: var(--display);
  font-weight: 600; font-size: 16px; color: #fff; line-height: 1.2;
}
.logo-sub { font-size: 10px; color: var(--sidebar3); letter-spacing: .04em; margin-top: 1px; }

.nav { padding: 10px 10px; flex: 1; }
.nav-section { margin-bottom: 4px; }
.nav-label {
  font-size: 10px; font-weight: 600; letter-spacing: .08em;
  color: var(--sidebar3); padding: 10px 8px 4px; text-transform: uppercase;
}

.nav-item {
  display: flex; align-items: center; gap: 9px;
  padding: 7px 8px; border-radius: var(--r2);
  color: #a8a29e; font-size: 13.5px; font-weight: 400;
  transition: .12s; margin-bottom: 1px; border: none;
}
.nav-item:hover { background: var(--sidebar2); color: #e7e5e4; }
.nav-item.active { background: var(--accent); color: #fff; font-weight: 500; }
.nav-item.active:hover { background: var(--accent2); }
.nav-icon { font-size: 14px; width: 16px; text-align: center; flex-shrink: 0; }

.sidebar-user {
  padding: 12px 14px; border-top: 1px solid var(--sidebar2);
  display: flex; align-items: center; gap: 10px;
}
.avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 11px; color: #fff; flex-shrink: 0;
  letter-spacing: .02em;
}
.user-name  { font-size: 12.5px; font-weight: 500; color: #e7e5e4; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-xp    { font-size: 11px; color: var(--sidebar3); }
.xp-bar     { height: 2px; background: var(--sidebar2); border-radius: 1px; margin-top: 4px; }
.xp-fill    { height: 2px; background: var(--accent); border-radius: 1px; transition: width .4s; }

/* ── MAIN AREA ── */
.main { flex: 1; overflow-y: auto; min-width: 0; }

.page-header {
  padding: 28px 32px 0;
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
  padding-bottom: 20px;
  margin-bottom: 0;
}
.page-title  { font-family: var(--display); font-weight: 600; font-size: 24px; color: var(--text); letter-spacing: -.3px; }
.page-sub    { font-size: 13px; color: var(--text2); margin-top: 3px; }
.page-content { padding: 24px 32px 48px; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: var(--r2);
  font-size: 13px; font-weight: 500; transition: .12s; cursor: pointer;
  font-family: var(--font); white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent2); }
.btn-secondary { background: var(--text); color: #fff; }
.btn-secondary:hover { opacity: .85; }
.btn-ghost { background: transparent; color: var(--text2); border: 1px solid var(--border2); }
.btn-ghost:hover { background: var(--card2); color: var(--text); }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-xs { padding: 3px 9px; font-size: 11px; }
.btn-danger { background: #fef2f2; color: var(--danger); border: 1px solid #fecaca; }
.btn-danger:hover { background: #fee2e2; }

/* ── CARDS ── */
.card    { background: var(--card); border: 1px solid var(--border); border-radius: var(--r); padding: 20px 22px; }
.card-sm { background: var(--card); border: 1px solid var(--border); border-radius: var(--r); padding: 14px 16px; }
.card-flat { background: var(--card2); border-radius: var(--r); padding: 16px 18px; }

/* ── STAT CARDS ── */
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--r); padding: 18px 20px; }
.stat-label { font-size: 11px; color: var(--text3); font-weight: 600; letter-spacing: .05em; text-transform: uppercase; margin-bottom: 10px; }
.stat-val   { font-family: var(--display); font-size: 28px; font-weight: 600; color: var(--text); letter-spacing: -.5px; }
.stat-sub   { font-size: 12px; color: var(--text2); margin-top: 4px; }
.trend-up   { color: var(--green); font-size: 12px; font-weight: 500; margin-top: 4px; }
.trend-dn   { color: var(--danger); font-size: 12px; }

/* ── BADGES ── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 4px; font-size: 11px; font-weight: 600;
  letter-spacing: .02em; text-transform: uppercase;
}
.badge-ap     { background: #fef3c7; color: #92400e; }
.badge-sat    { background: #dbeafe; color: #1e40af; }
.badge-act    { background: #d1fae5; color: #065f46; }
.badge-blue   { background: var(--bluelt);   color: var(--blue); }
.badge-green  { background: var(--greenlt);  color: var(--green); }
.badge-amber  { background: var(--amberlt);  color: var(--amber); }
.badge-red    { background: #fef2f2; color: var(--danger); }
.badge-purple { background: var(--purplelt); color: var(--purple); }
.badge-orange { background: var(--accentlt); color: var(--accent); }
.badge-gray   { background: #f5f5f4; color: var(--text2); }

/* ── SUBJECT PILLS ── */
.subject-pill {
  padding: 5px 13px; border-radius: 20px; border: 1px solid var(--border2);
  font-size: 12.5px; color: var(--text2); cursor: pointer; transition: .12s; background: var(--card);
  font-weight: 500;
}
.subject-pill:hover { border-color: var(--accent); color: var(--accent); }
.subject-pill.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ── GRID LAYOUTS ── */
.grid-2  { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3  { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4  { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }

/* ── FORMS ── */
.form-group  { margin-bottom: 14px; }
.form-label  { font-size: 12px; font-weight: 600; color: var(--text2); margin-bottom: 5px; display: block; letter-spacing: .02em; }
.form-input  {
  width: 100%; background: var(--surface); border: 1px solid var(--border2);
  border-radius: var(--r2); padding: 9px 12px; font-size: 13.5px; color: var(--text);
  transition: border-color .12s;
}
.form-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(194,65,12,.1); }
.form-input::placeholder { color: var(--text3); }
textarea.form-input { resize: vertical; min-height: 100px; line-height: 1.6; }
select.form-input option { background: white; }

/* ── TABS ── */
.tabs { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 20px; gap: 0; }
.tab  {
  padding: 9px 18px; font-size: 13px; color: var(--text3); font-weight: 500;
  cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; transition: .12s;
}
.tab.active  { color: var(--accent); border-color: var(--accent); }
.tab:hover:not(.active) { color: var(--text2); }

/* ── PROGRESS BAR ── */
.prog-bar  { height: 5px; background: var(--border); border-radius: 3px; overflow: hidden; }
.prog-fill { height: 100%; border-radius: 3px; transition: width .4s; }

/* ── DIVIDER ── */
.divider { border: none; border-top: 1px solid var(--border); margin: 18px 0; }

/* ── SEARCH ── */
.search-wrap { position: relative; }
.search-wrap input {
  width: 100%; background: var(--card); border: 1px solid var(--border2);
  border-radius: var(--r2); padding: 8px 12px 8px 36px; font-size: 13px; color: var(--text);
}
.search-wrap input:focus { border-color: var(--accent); }
.search-wrap input::placeholder { color: var(--text3); }
.search-icon { position: absolute; left: 11px; top: 50%; transform: translateY(-50%); color: var(--text3); font-size: 13px; pointer-events: none; }

/* ── POST CARDS ── */
.post-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--r);
  padding: 16px 18px; display: flex; gap: 14px; transition: .12s; cursor: pointer;
}
.post-card:hover { border-color: var(--border2); box-shadow: 0 2px 8px rgba(0,0,0,.06); }
.post-body   { flex: 1; min-width: 0; }
.post-meta   { display: flex; align-items: center; gap: 7px; margin-bottom: 8px; flex-wrap: wrap; }
.post-title  { font-size: 15px; font-weight: 600; color: var(--text); margin-bottom: 5px; line-height: 1.35; font-family: var(--display); }
.post-excerpt { font-size: 13px; color: var(--text2); line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.post-footer { display: flex; align-items: center; gap: 14px; margin-top: 10px; flex-wrap: wrap; }
.post-stat   { font-size: 12px; color: var(--text3); display: flex; align-items: center; gap: 4px; }

/* ── VOTE ── */
.vote-col  { display: flex; flex-direction: column; align-items: center; gap: 2px; flex-shrink: 0; }
.vote-btn  {
  width: 26px; height: 26px; border-radius: 5px; background: transparent;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; cursor: pointer; color: var(--text3); transition: .12s; border: 1px solid transparent;
}
.vote-btn:hover     { background: var(--accentlt); color: var(--accent); border-color: #fbd0c0; }
.vote-btn.active-up { background: var(--accentlt); color: var(--accent); }
.vote-btn.active-dn { background: #fef2f2; color: var(--danger); }
.vote-count { font-size: 12px; font-weight: 600; color: var(--text2); }

/* ── MODAL ── */
.overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.45);
  display: flex; align-items: center; justify-content: center;
  z-index: 100; padding: 20px; backdrop-filter: blur(3px);
}
.modal {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--r3);
  padding: 26px 28px; width: 100%; max-width: 600px; max-height: 92vh; overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,.15);
}
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.modal-title  { font-family: var(--display); font-weight: 600; font-size: 19px; }
.btn-icon     { width: 30px; height: 30px; background: var(--card2); border: none; color: var(--text2); border-radius: 6px; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 14px; }
.btn-icon:hover { background: var(--border); color: var(--text); }

/* ── EXAM TYPE CARDS (landing strips) ── */
.exam-strip {
  border-radius: var(--r); padding: 18px 20px; cursor: pointer;
  border: 1px solid var(--border); transition: .12s; display: flex; gap: 16px; align-items: flex-start;
}
.exam-strip:hover { box-shadow: 0 3px 12px rgba(0,0,0,.08); border-color: var(--border2); }
.exam-strip.ap-style   { border-left: 3px solid var(--amber); }
.exam-strip.sat-style  { border-left: 3px solid var(--blue); }
.exam-strip.act-style  { border-left: 3px solid var(--green); }

/* ── SCORE BANDS ── */
.score-band { display: flex; align-items: center; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.score-band:last-child { border-bottom: none; }
.score-label { font-size: 12px; font-weight: 600; width: 90px; flex-shrink: 0; }
.score-bar-wrap { flex: 1; }
.score-pct { font-size: 12px; color: var(--text3); min-width: 36px; text-align: right; }

/* ── CALENDAR ── */
.cal-grid { display: grid; grid-template-columns: repeat(7,1fr); gap: 3px; }
.cal-cell {
  aspect-ratio: 1; border-radius: 5px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; font-size: 11.5px; cursor: pointer;
  border: 1px solid transparent; transition: .12s; position: relative; color: var(--text2);
}
.cal-cell:hover    { background: var(--card2); }
.cal-cell.today    { border-color: var(--accent); color: var(--accent); font-weight: 600; }
.cal-cell.has-plan { background: var(--accentlt); color: var(--accent); }
.cal-cell.completed{ background: var(--greenlt); color: var(--green); }
.cal-cell.other-month { opacity: .35; }
.cal-dot { width: 4px; height: 4px; border-radius: 50%; background: var(--accent); position: absolute; bottom: 2px; }

/* ── CHAT ── */
.chat-area {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--r);
  padding: 16px; min-height: 220px; max-height: 360px; overflow-y: auto; margin-bottom: 12px;
}
.chat-msg { margin-bottom: 14px; display: flex; gap: 10px; align-items: flex-start; }
.chat-msg.user { flex-direction: row-reverse; }
.chat-bubble { padding: 9px 13px; border-radius: 10px; font-size: 13.5px; line-height: 1.55; max-width: 78%; }
.chat-bubble.ai   { background: var(--card); border: 1px solid var(--border); border-bottom-left-radius: 3px; }
.chat-bubble.user { background: var(--accent); color: #fff; border-bottom-right-radius: 3px; }
.chat-avatar { width: 28px; height: 28px; border-radius: 50%; background: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 700; color: #fff; flex-shrink: 0; font-family: var(--display); }

/* ── QUIZ ── */
.quiz-opt {
  width: 100%; text-align: left; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r2); padding: 11px 15px; font-size: 13.5px; color: var(--text);
  margin-bottom: 8px; cursor: pointer; transition: .12s; line-height: 1.4;
}
.quiz-opt:hover:not(:disabled) { border-color: var(--accent); background: var(--accentlt); }
.quiz-opt.correct { border-color: var(--green); background: var(--greenlt); color: var(--green); }
.quiz-opt.wrong   { border-color: var(--danger); background: #fef2f2; color: var(--danger); }

/* ── FLASHCARD ── */
.fc-wrap { perspective: 1000px; cursor: pointer; }
.fc-inner { position:relative; width:100%; min-height:200px; transition:transform .5s; transform-style:preserve-3d; }
.fc-wrap.flipped .fc-inner { transform: rotateY(180deg); }
.fc-face {
  position:absolute; width:100%; min-height:200px; backface-visibility:hidden;
  border-radius: var(--r); border:1px solid var(--border); background: var(--card);
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  padding:32px 28px; text-align:center;
}
.fc-back { transform: rotateY(180deg); }

/* ── LEADERBOARD ── */
.lb-row { display: flex; align-items: center; gap: 12px; padding: 12px 18px; border-bottom: 1px solid var(--border); }
.lb-row:last-child { border-bottom: none; }
.lb-rank { width: 24px; text-align: center; font-size: 13px; font-weight: 700; color: var(--text3); }
.lb-rank.gold   { color: #b45309; }
.lb-rank.silver { color: #71717a; }
.lb-rank.bronze { color: #92400e; }

/* ── STREAK DAYS ── */
.streak-day { width: 32px; height: 32px; border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 600; }
.streak-done  { background: var(--accentlt); color: var(--accent); border: 1px solid #fbd0c0; }
.streak-miss  { background: var(--card2); color: var(--text3); border: 1px solid var(--border); }
.streak-today { border: 1.5px dashed var(--accent); color: var(--accent); }

/* ── INFO PANEL (AP/SAT info boxes) ── */
.info-panel { border-radius: var(--r); padding: 16px 18px; border: 1px solid var(--border); }
.info-panel.ap  { border-left: 3px solid var(--amber); background: var(--amberlt); }
.info-panel.sat { border-left: 3px solid var(--blue);  background: var(--bluelt); }
.info-panel.act { border-left: 3px solid var(--green); background: var(--greenlt); }
.info-panel-title { font-size: 12px; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; margin-bottom: 6px; }
.info-panel.ap  .info-panel-title { color: var(--amber); }
.info-panel.sat .info-panel-title { color: var(--blue); }
.info-panel.act .info-panel-title { color: var(--green); }

/* ── TABLE ── */
table { width: 100%; border-collapse: collapse; }
th { font-size: 11px; font-weight: 700; color: var(--text3); text-transform: uppercase; letter-spacing: .05em; padding: 8px 14px; text-align: left; border-bottom: 1px solid var(--border); }
td { padding: 11px 14px; font-size: 13px; border-bottom: 1px solid var(--border); vertical-align: middle; color: var(--text); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg); }

/* ── ACTION BTNS (admin) ── */
.action-btn { padding: 3px 10px; border-radius: 5px; font-size: 12px; font-weight: 500; cursor: pointer; border: 1px solid; margin-right: 4px; transition: .12s; font-family: var(--font); }
.btn-edit   { background: var(--bluelt); color: var(--blue); border-color: #bfdbfe; }
.btn-edit:hover { background: #dbeafe; }
.btn-del    { background: #fef2f2; color: var(--danger); border-color: #fecaca; }
.btn-del:hover  { background: #fee2e2; }
.btn-promote{ background: var(--amberlt); color: var(--amber); border-color: #fde68a; font-size: 11px; }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  :root { --sidebar-w: 56px; }
  .logo-text, .logo-sub, .nav-item span:not(.nav-icon), .user-info { display: none; }
  .nav-item { justify-content: center; padding: 9px; }
  .nav-icon { width: auto; font-size: 17px; }
  .sidebar-user { justify-content: center; padding: 10px; }
  .page-header, .page-content { padding-left: 18px; padding-right: 18px; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 600px) {
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .page-header { padding: 16px 14px 14px; }
  .page-content { padding: 14px; }
  .post-card { flex-direction: column; }
  .vote-col { flex-direction: row; }
}