@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;700&display=swap');

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

:root {
  --bg:       #0d1117;
  --bg2:      #161b22;
  --bg3:      #1c2330;
  --surface:  #21262d;
  --surface2: #2d333b;
  --border:   #30363d;
  --border2:  #444c56;

  --txt:      #e6edf3;
  --txt2:     #8b949e;
  --txt3:     #484f58;

  --blue:     #388bfd;
  --blue-dim: #1f3a6b;
  --green:    #3fb950;
  --green-dim:#1a3d24;
  --yellow:   #d29922;
  --yellow-dim:#3d2c00;
  --red:      #f85149;
  --red-dim:  #4a1818;
  --purple:   #8b5cf6;
  --purple-dim:#2e1f5e;
  --orange:   #f0883e;
  --orange-dim:#4a2500;
  --teal:     #39c5cf;
  --teal-dim: #0d3a40;

  --r-sm: 6px;
  --r:    10px;
  --r-lg: 16px;
  --r-xl: 24px;

  --shadow: 0 4px 24px rgba(0,0,0,.5);
  --glow-blue: 0 0 20px rgba(56,139,253,.25);
}

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background: var(--bg);
  color: var(--txt);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
}

/* ── PAGES ── */
.page { display: none; min-height: 100vh; flex-direction: column; animation: fadeUp .3s ease; }
.page.active { display: flex; }

@keyframes fadeUp   { from { opacity:0; transform:translateY(14px) } to { opacity:1; transform:none } }
@keyframes popIn    { 0%{transform:scale(.9)} 60%{transform:scale(1.05)} 100%{transform:scale(1)} }
@keyframes shake    { 0%,100%{transform:translateX(0)} 20%{transform:translateX(-6px)} 60%{transform:translateX(6px)} }
@keyframes pulse-glow { 0%,100%{box-shadow:0 0 0 0 rgba(56,139,253,.4)} 50%{box-shadow:0 0 0 8px rgba(56,139,253,0)} }
@keyframes float    { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-6px)} }
@keyframes fall     { from{transform:translateY(-10px) rotate(0); opacity:1} to{transform:translateY(105vh) rotate(540deg); opacity:0} }
@keyframes slideInRight { from{transform:translateX(80px);opacity:0} to{transform:none;opacity:1} }
@keyframes spin { from{transform:rotate(0)} to{transform:rotate(360deg)} }

/* ── NAV ── */
.nav {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky; top: 0; z-index: 100;
}
.nav-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 17px; font-weight: 700;
  color: var(--txt);
  display: flex; align-items: center; gap: 8px;
}
.nav-brand span { color: var(--blue); }
.nav-actions { display: flex; gap: 8px; align-items: center; }

/* ── BUTTONS ── */
.btn {
  cursor: pointer; border: none; outline: none;
  font-family: inherit; font-weight: 600; font-size: 13px;
  border-radius: var(--r); padding: 8px 16px;
  transition: all .15s ease; display: inline-flex; align-items: center; gap: 6px;
  white-space: nowrap;
}
.btn:hover  { filter: brightness(1.15); transform: translateY(-1px); }
.btn:active { transform: scale(.97); }

.btn-primary  { background: var(--blue);   color: #fff; }
.btn-success  { background: var(--green);  color: #fff; }
.btn-danger   { background: var(--red);    color: #fff; }
.btn-ghost    { background: var(--surface); color: var(--txt2); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--txt); border-color: var(--border2); }
.btn-lg { padding: 12px 28px; font-size: 15px; border-radius: var(--r-lg); font-weight: 700; }
.btn-block { width: 100%; justify-content: center; }
.btn-icon { padding: 8px; }

/* ── INPUTS ── */
.inp {
  width: 100%; padding: 10px 14px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r); color: var(--txt);
  font-family: inherit; font-size: 14px; outline: none;
  transition: border-color .2s;
}
.inp:focus { border-color: var(--blue); }
.inp::placeholder { color: var(--txt3); }
.inp-lg { padding: 14px 18px; font-size: 18px; font-weight: 700; text-align: center; border-radius: var(--r-lg); border: 2px solid var(--border); font-size: 28px; }
.inp-lg:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(56,139,253,.15); }

select.inp { appearance: none; cursor: pointer; }

/* ── CARDS ── */
.card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 20px;
}
.card-sm { padding: 14px 16px; border-radius: var(--r); }
.card-inner { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r); padding: 16px; }

/* ── LAYOUT HELPERS ── */
.content    { flex: 1; max-width: 920px; margin: 0 auto; width: 100%; padding: 28px 24px; }
.content-sm { max-width: 480px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.grid-classes { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.flex  { display: flex; align-items: center; gap: 10px; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; gap: 12px; }
.flex-wrap { flex-wrap: wrap; }
.gap-sm { gap: 6px; }
.gap-lg { gap: 20px; }
.text-center { text-align: center; }
.mb-xs { margin-bottom: 6px; }
.mb-sm { margin-bottom: 10px; }
.mb    { margin-bottom: 16px; }
.mb-lg { margin-bottom: 24px; }
.mt    { margin-top: 16px; }
.mt-lg { margin-top: 24px; }

/* ── TYPOGRAPHY ── */
.heading { font-family: 'Space Grotesk', sans-serif; font-weight: 700; }
.txt-sm   { font-size: 12px; }
.txt-muted { color: var(--txt2); }
.txt-blue  { color: var(--blue); }
.txt-green { color: var(--green); }
.txt-red   { color: var(--red); }
.txt-yellow{ color: var(--yellow); }
.fw-bold   { font-weight: 700; }
.fw-black  { font-weight: 800; }

/* ── BADGE / TAG ── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 20px;
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .5px;
}
.badge-blue   { background: var(--blue-dim);   color: var(--blue); }
.badge-green  { background: var(--green-dim);  color: var(--green); }
.badge-red    { background: var(--red-dim);    color: var(--red); }
.badge-yellow { background: var(--yellow-dim); color: var(--yellow); }
.badge-purple { background: var(--purple-dim); color: var(--purple); }

/* ── TABS ── */
.tabs { display: flex; background: var(--surface); border-radius: var(--r); padding: 4px; gap: 4px; }
.tab  { flex: 1; padding: 7px 12px; border-radius: var(--r-sm); font-size: 13px; font-weight: 600;
        cursor: pointer; text-align: center; color: var(--txt2); transition: all .2s; }
.tab.active { background: var(--bg2); color: var(--txt); box-shadow: 0 1px 3px rgba(0,0,0,.3); }

/* ── PROGRESS BAR ── */
.progress { height: 6px; background: var(--surface2); border-radius: 99px; overflow: hidden; }
.progress-fill { height: 100%; border-radius: 99px; background: var(--blue); transition: width .4s ease; }

/* ── DIVIDER ── */
.divider { height: 1px; background: var(--border); margin: 16px 0; }

/* ── MODAL ── */
.modal-bg {
  position: fixed; inset: 0; background: rgba(0,0,0,.7);
  display: none; align-items: center; justify-content: center;
  z-index: 1000; backdrop-filter: blur(6px);
}
.modal-bg.open { display: flex; }
.modal {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--r-xl); padding: 28px;
  max-width: 460px; width: 90%;
  animation: popIn .25s ease;
  box-shadow: var(--shadow);
}
.modal-title { font-size: 17px; font-weight: 700; margin-bottom: 20px; }

/* ── NOTIFICATION ── */
.notif {
  position: fixed; bottom: 24px; right: 24px;
  background: var(--surface2); border: 1px solid var(--border2);
  border-radius: var(--r-lg); padding: 12px 18px;
  font-size: 14px; font-weight: 600;
  z-index: 2000; animation: slideInRight .3s ease;
  max-width: 300px; box-shadow: var(--shadow);
}

/* ── CONFETTI ── */
#confetti { position: fixed; inset: 0; pointer-events: none; z-index: 9999; }
.c-piece   { position: absolute; border-radius: 2px; animation: fall linear forwards; }

/* ────────────────── LOGIN PAGE ─────────────────── */
#page-login {
  align-items: center; justify-content: center;
  background: radial-gradient(ellipse at 20% 30%, #0d2049 0%, var(--bg) 60%);
  min-height: 100vh;
}
.login-wrap { width: 100%; max-width: 400px; padding: 20px; }
.login-logo { font-family: 'Space Grotesk', sans-serif; font-size: 36px; font-weight: 700; text-align: center; margin-bottom: 8px; }
.login-logo span { color: var(--blue); }
.login-sub { text-align: center; color: var(--txt2); font-size: 14px; margin-bottom: 28px; }
.form-label { display: block; font-size: 12px; font-weight: 600; color: var(--txt2); margin-bottom: 6px; text-transform: uppercase; letter-spacing: .5px; }
.form-group { margin-bottom: 14px; }
.form-err { font-size: 12px; color: var(--red); margin-top: 4px; display: none; }

/* ────────────────── HOME PAGE ────────────────── */
.home-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: 28px; flex-wrap: wrap; gap: 12px;
}
.home-welcome { font-size: 22px; font-weight: 800; color: var(--txt); }
.home-welcome span { color: var(--blue); }
.stat-chip {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r); padding: 8px 14px;
  display: flex; flex-direction: column; align-items: center; min-width: 80px;
}
.stat-chip-val { font-size: 20px; font-weight: 800; line-height: 1; }
.stat-chip-lbl { font-size: 10px; color: var(--txt3); text-transform: uppercase; letter-spacing: .4px; margin-top: 3px; }

/* ── CLASS CARDS ── */
.class-card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 20px;
  cursor: pointer; position: relative; overflow: hidden;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.class-card:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(0,0,0,.4); }
.class-card-accent {
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  border-radius: var(--r-lg) var(--r-lg) 0 0;
}
.class-card-icon { font-size: 32px; margin-bottom: 12px; display: block; line-height: 1; }
.class-card-name { font-family: 'Space Grotesk', sans-serif; font-size: 16px; font-weight: 700; margin-bottom: 4px; }
.class-card-desc { font-size: 12px; color: var(--txt2); margin-bottom: 14px; line-height: 1.4; }
.class-card-footer { display: flex; align-items: center; justify-content: space-between; }
.class-card-score { font-size: 22px; font-weight: 800; }
.class-card-done  { font-size: 11px; color: var(--txt3); }
.class-card-ops   { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 8px; }

/* ── SECTION TITLE ── */
.section-title { font-family: 'Space Grotesk', sans-serif; font-size: 13px; font-weight: 700; color: var(--txt2); text-transform: uppercase; letter-spacing: .8px; margin-bottom: 16px; }

/* ────────────────── CLASS SELECT PAGE ────────────────── */
.op-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px; margin-bottom: 24px; }
.op-card {
  border: 1.5px solid var(--border); border-radius: var(--r-lg);
  background: var(--surface); cursor: pointer;
  padding: 16px 14px; text-align: center;
  transition: all .2s; position: relative; overflow: hidden;
}
.op-card:hover { border-color: var(--border2); background: var(--surface2); }
.op-card.active { border-color: transparent; }
.op-card-icon { font-size: 26px; margin-bottom: 8px; }
.op-card-name { font-size: 13px; font-weight: 700; }
.op-card-range { font-size: 11px; color: var(--txt2); margin-top: 3px; }
.op-card-glow { position: absolute; inset: 0; opacity: .12; }

/* ────────────────── GAME PAGE ────────────────── */
.game-header {
  background: var(--bg2); border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 100;
}
.game-meta { display: flex; gap: 10px; align-items: center; }
.game-chip {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r); padding: 5px 12px;
  font-size: 13px; font-weight: 700; display: flex; align-items: center; gap: 6px;
}

/* Timer Ring */
.timer-ring { width: 60px; height: 60px; position: relative; flex-shrink: 0; }
.timer-ring svg { transform: rotate(-90deg); }
.timer-ring .num {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 800;
}

/* Question Box */
.question-box {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--r-xl); padding: 36px 28px;
  text-align: center; margin-bottom: 24px;
  transition: border-color .2s, box-shadow .2s;
}
.q-op-label {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .8px; color: var(--txt2); margin-bottom: 12px;
}
.q-text {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 52px; font-weight: 700; color: var(--txt);
  margin-bottom: 6px; letter-spacing: -1px;
}
.q-text sup { font-size: 24px; }
.q-hint { font-size: 12px; color: var(--txt3); }
.q-box-correct { border-color: var(--green); box-shadow: 0 0 0 3px rgba(63,185,80,.15); }
.q-box-wrong   { border-color: var(--red);   box-shadow: 0 0 0 3px rgba(248,81,73,.15); animation: shake .3s ease; }

.result-strip {
  padding: 14px 20px; border-radius: var(--r-lg);
  text-align: center; font-size: 16px; font-weight: 700;
  margin-bottom: 16px; display: none; animation: popIn .25s ease;
}
.result-correct { background: var(--green-dim); color: var(--green); }
.result-wrong   { background: var(--red-dim);   color: var(--red); }

/* ────────────────── SCOREBOARD ────────────────── */
.sb-row {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px; border-radius: var(--r);
  background: var(--surface); border: 1px solid var(--border);
  transition: background .15s;
}
.sb-row:hover { background: var(--surface2); }
.sb-row.is-me  { border-color: var(--blue); background: var(--blue-dim); }
.sb-rank {
  width: 30px; height: 30px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 800; flex-shrink: 0;
}
.rank-1 { background: var(--yellow);    color: #000; }
.rank-2 { background: #6e7681;          color: #fff; }
.rank-3 { background: #8b4513;          color: #fff; }
.rank-n { background: var(--surface2);  color: var(--txt2); }
.sb-avatar {
  width: 36px; height: 36px; border-radius: 50%; flex-shrink: 0;
  background: var(--surface2); display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 15px; overflow: hidden;
  border: 2px solid var(--border);
}
.sb-avatar.online { border-color: var(--green); }
.sb-avatar img { width: 100%; height: 100%; object-fit: cover; }

/* ────────────────── MULTIPLICATION TABLE ────────────────── */
.mult-section { margin-bottom: 32px; }
.mult-section-title { font-size: 15px; font-weight: 700; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.mult-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.mult-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); overflow: hidden; cursor: pointer;
  transition: transform .2s, box-shadow .2s;
}
.mult-card:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,.3); }
.mult-card-head {
  padding: 14px 16px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 22px; font-weight: 700; text-align: center;
}
.mult-card-body { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--border); }
.mult-row { padding: 6px 12px; border-bottom: 1px solid var(--border); font-size: 13px; font-weight: 600; display: flex; justify-content: space-between; }
.mult-row:nth-child(even) { background: var(--surface2); }
.mult-row:last-child, .mult-row:nth-last-child(2) { border-bottom: none; }
.mult-row .result { color: var(--blue); font-weight: 700; }

.mult-matrix-wrap { overflow-x: auto; border-radius: var(--r-lg); border: 1px solid var(--border); }
.mult-matrix { border-collapse: collapse; width: 100%; font-size: 12px; }
.mult-matrix th, .mult-matrix td { padding: 7px 10px; text-align: center; min-width: 36px; border: 1px solid var(--border); }
.mult-matrix th { background: var(--surface2); color: var(--txt2); font-weight: 700; }
.mult-matrix th.corner { background: var(--bg); }
.mult-matrix td { font-weight: 600; transition: background .15s; cursor: default; }
.mult-matrix td:hover { background: var(--blue-dim); color: var(--blue); }

/* ── POWER SECTION ── */
.power-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px; }
.power-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 16px 14px; text-align: center;
}
.power-base { font-size: 28px; font-weight: 800; font-family: 'Space Grotesk', sans-serif; }
.power-base sup { font-size: 14px; color: var(--purple); }
.power-rows { margin-top: 10px; border-top: 1px solid var(--border); padding-top: 10px; }
.power-row  { display: flex; justify-content: space-between; align-items: center; padding: 4px 0; font-size: 13px; }
.power-exp  { color: var(--txt2); }
.power-val  { font-weight: 700; color: var(--purple); }

/* ────────────────── PROFILE PAGE ────────────────── */
.profile-hero {
  background: linear-gradient(135deg, var(--bg2) 0%, var(--bg3) 100%);
  border: 1px solid var(--border); border-radius: var(--r-xl);
  padding: 28px; margin-bottom: 20px;
  display: flex; align-items: center; gap: 20px;
  position: relative; overflow: hidden;
}
.profile-hero::before {
  content: ''; position: absolute; top: -30px; right: -30px;
  width: 180px; height: 180px; border-radius: 50%;
  background: var(--blue-dim); opacity: .5;
}
.profile-avatar-wrap { position: relative; cursor: pointer; flex-shrink: 0; }
.profile-avatar {
  width: 80px; height: 80px; border-radius: 50%;
  border: 3px solid var(--blue); object-fit: cover;
  background: var(--surface2); display: flex; align-items: center; justify-content: center;
  font-size: 28px; font-weight: 700; overflow: hidden;
}
.profile-avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar-edit {
  position: absolute; bottom: 0; right: 0;
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--blue); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; border: 2px solid var(--bg2);
}
.profile-name  { font-size: 20px; font-weight: 800; margin-bottom: 4px; }
.profile-uname { font-size: 13px; color: var(--txt2); }
.profile-stats { display: flex; gap: 16px; margin-top: 12px; flex-wrap: wrap; }
.profile-stat  { display: flex; flex-direction: column; }
.profile-stat-val { font-size: 18px; font-weight: 800; line-height: 1; }
.profile-stat-lbl { font-size: 11px; color: var(--txt3); margin-top: 3px; }

.score-row {
  display: flex; flex-direction: column; gap: 6px;
  padding: 12px 0; border-bottom: 1px solid var(--border);
}
.score-row:last-child { border-bottom: none; }
.score-row-top { display: flex; align-items: center; justify-content: space-between; }

/* ────────────────── ADMIN PAGE ────────────────── */
.admin-stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 18px; }
.admin-stat-val { font-size: 30px; font-weight: 800; font-family: 'Space Grotesk', sans-serif; margin-bottom: 4px; }
.admin-stat-lbl { font-size: 12px; color: var(--txt2); }
.live-pill { display: flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 700; color: var(--green); }
.live-dot  { width: 7px; height: 7px; border-radius: 50%; background: var(--green); animation: pulse-glow 1.5s infinite; }

/* TABLE */
.tbl-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--r-lg); }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th { background: var(--surface); color: var(--txt2); padding: 10px 14px; text-align: left; font-weight: 700; white-space: nowrap; border-bottom: 1px solid var(--border); }
tbody td { padding: 10px 14px; border-bottom: 1px solid var(--border); color: var(--txt2); }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--surface); color: var(--txt); }

/* ────────────────── ONLINE DOT ────────────────── */
.online-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); display: inline-block; }

/* ────────────────── MISC ── */
.empty-state { text-align: center; padding: 48px; color: var(--txt3); font-size: 14px; }
.activity-row { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: var(--r); background: var(--surface); font-size: 13px; color: var(--txt2); }

/* ── RESPONSIVE ── */
@media (max-width: 640px) {
  .content { padding: 20px 16px; }
  .nav { padding: 0 16px; }
  .grid3 { grid-template-columns: 1fr 1fr; }
  .grid-classes { grid-template-columns: 1fr 1fr; }
  .q-text { font-size: 38px; }
  .profile-hero { flex-direction: column; text-align: center; }
  .profile-stats { justify-content: center; }
  .op-grid { grid-template-columns: 1fr 1fr; }
  .mult-cards { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 400px) {
  .grid-classes { grid-template-columns: 1fr; }
  .grid3 { grid-template-columns: 1fr; }
  .op-grid { grid-template-columns: 1fr 1fr; }
}

@import url('https://fonts.googleapis.com/css2?family=Baloo+2:wght@400;500;600;700;800&family=Nunito:wght@400;500;600;700;800&display=swap');

:root {
  --bg: #fffaf5;
  --bg2: #fffdfb;
  --bg3: #ffe8d6;
  --surface: #fff7ee;
  --surface2: #ffe7cb;
  --border: #ffd7b5;
  --border2: #f7b66a;

  --txt: #3b2d29;
  --txt2: #7a5b4c;
  --txt3: #a77d68;

  --blue: #5aa9ff;
  --blue-dim: #eaf4ff;
  --green: #48c77a;
  --green-dim: #e9fbf1;
  --yellow: #f4c95d;
  --yellow-dim: #fff4cc;
  --red: #ff7a7a;
  --red-dim: #ffe4e4;
  --purple: #a48aff;
  --purple-dim: #f0ebff;
  --orange: #ff9f6e;
  --orange-dim: #fff0e6;
  --teal: #5ec7d6;
  --teal-dim: #ebfbff;

  --shadow: 0 14px 32px rgba(255, 166, 98, 0.18);
  --glow-blue: 0 0 0 6px rgba(90,169,255,.12);
}

body {
  background: linear-gradient(180deg, #fffaf5 0%, #fff4ea 100%);
  color: var(--txt);
  font-family: 'Nunito', sans-serif;
}

.nav,
.card,
.class-card,
.sb-row,
.modal,
.question-box,
.profile-hero,
.admin-stat,
.mult-card,
.power-card,
.login-wrap .card,
#page-login .card {
  box-shadow: var(--shadow);
}

.nav {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(247, 182, 106, 0.35);
}

.nav-brand,
.login-logo,
.home-welcome,
.class-card-name,
.section-title,
.profile-name,
.q-op-label,
.q-text,
.admin-stat-val {
  font-family: 'Baloo 2', 'Nunito', sans-serif;
  letter-spacing: 0.02em;
}

.btn {
  border-radius: 999px;
  box-shadow: 0 8px 18px rgba(107, 132, 255, 0.14);
  font-weight: 800;
}

.btn-primary {
  background: linear-gradient(135deg, #6bb5ff, #5aa9ff);
}

.btn-success {
  background: linear-gradient(135deg, #70d995, #48c77a);
}

.btn-danger {
  background: linear-gradient(135deg, #ff8d8d, #ff7a7a);
}

.btn-ghost {
  background: #fff;
  border: 1.5px solid var(--border);
  color: var(--txt2);
}

.card,
.class-card,
.sb-row,
.modal,
.question-box,
.admin-stat,
.mult-card,
.power-card,
.profile-hero {
  border: 1.5px solid rgba(247, 182, 106, 0.4);
  border-radius: 22px;
}

#page-login {
  background: radial-gradient(circle at top left, #fff5d9 0%, #ffe4cc 24%, #fffaf5 64%, #fffaf5 100%);
}

.login-wrap {
  max-width: 430px;
}

.login-logo {
  font-size: 44px;
  color: var(--txt);
}

.login-logo span,
.nav-brand span {
  color: var(--blue);
}

.login-sub {
  font-size: 15px;
  color: var(--txt2);
  font-weight: 700;
}

#login-form,
#register-form {
  background: rgba(255,255,255,0.6);
  border: 1px solid rgba(247,182,106,0.35);
  border-radius: 24px;
  padding: 18px;
}

.inp {
  background: #fff;
  border: 2px solid var(--border);
  border-radius: 16px;
  color: var(--txt);
  box-shadow: inset 0 1px 2px rgba(116,91,75,0.04);
}

.inp:focus,
.inp-lg:focus {
  border-color: var(--blue);
  box-shadow: var(--glow-blue), inset 0 1px 2px rgba(116,91,75,0.04);
}

.class-card {
  padding: 18px 18px 16px;
  background: linear-gradient(180deg, rgba(255,255,255,0.92), rgba(255,244,232,0.9));
}

.class-card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 18px 30px rgba(255, 166, 98, 0.18);
}

.class-card-icon {
  font-size: 36px;
  filter: drop-shadow(0 6px 12px rgba(255, 166, 98, 0.2));
}

.class-card-score,
.home-welcome,
.q-text,
.profile-stat-val,
.admin-stat-val {
  color: var(--txt);
}

.section-title {
  color: var(--txt2);
  font-size: 14px;
}

.op-card {
  background: linear-gradient(180deg, #ffffff 0%, #fff7f0 100%);
  border-radius: 18px;
  border: 1.5px solid rgba(247, 182, 106, 0.35);
}

.op-card.active {
  box-shadow: 0 0 0 4px rgba(90,169,255,.12);
}

.game-header {
  background: rgba(255,255,255,0.78);
  border-bottom: 1px solid rgba(247,182,106,0.28);
}

.game-chip {
  background: #fff;
  border: 1px solid rgba(247,182,106,0.25);
  border-radius: 12px;
  box-shadow: 0 6px 14px rgba(247,182,106,0.08);
}

.question-box {
  background: linear-gradient(180deg, #fff 0%, #fff8ef 100%);
}

.result-strip {
  border-radius: 14px;
  font-weight: 800;
}

.result-correct {
  background: linear-gradient(180deg, #ebfff0, #dff9e7);
}

.result-wrong {
  background: linear-gradient(180deg, #fff0f0, #ffe7e7);
}

.profile-hero {
  background: linear-gradient(135deg, #fffaf4 0%, #f7ecff 100%);
}

.profile-hero::before {
  background: linear-gradient(135deg, rgba(90,169,255,0.15), rgba(164,138,255,0.2));
}

.profile-avatar {
  border-width: 4px;
  border-color: var(--orange);
  box-shadow: 0 8px 20px rgba(255,159,110,0.2);
}

.avatar-edit {
  background: linear-gradient(135deg, #ffb86a, #ff8e65);
  border: 2px solid #fff;
}

.badge {
  border-radius: 999px;
  font-weight: 800;
}

.sb-row {
  background: linear-gradient(180deg, #fffefb 0%, #fff8f0 100%);
}

.sb-row.is-me {
  background: linear-gradient(180deg, #edf6ff 0%, #eaf5ff 100%);
}

.tab {
  border-radius: 14px;
  font-weight: 800;
}

.tab.active {
  background: linear-gradient(180deg, #fff, #fff3df);
  color: var(--txt);
  box-shadow: 0 8px 14px rgba(255, 166, 98, 0.12);
}

.progress {
  height: 10px;
  background: #f7e6d3;
}

.progress-fill {
  background: linear-gradient(90deg, #6cc3ff 0%, #77d7a8 100%);
}

.mult-card {
  background: linear-gradient(180deg, #fff, #fff7f0);
}

.power-card {
  background: linear-gradient(180deg, #fff, #fffaf6);
}

.activity-row {
  border: 1px solid rgba(247,182,106,0.2);
  background: #fffaf4;
}

.empty-state {
  font-weight: 700;
}

@media (max-width: 640px) {
  .nav {
    padding: 0 14px;
  }

  .game-header {
    padding-left: 12px;
    padding-right: 12px;
  }

  .q-text {
    font-size: 42px;
  }
}