/* ===== VARIABLES ===== */
:root {
  --bg:      #0d0f14;
  --bg2:     #13161e;
  --bg3:     #1a1e2a;
  --card:    #161a24;
  --border:  #252a38;
  --accent:  #4f7ef8;
  --accent2: #f8b84f;
  --accent3: #4fd89e;
  --danger:  #f85f5f;
  --text:    #e8eaf0;
  --text2:   #8890a8;
  --text3:   #454e65;
  --radius:  12px;
  --shadow:  0 4px 28px rgba(0,0,0,.5);
  --font:    'Plus Jakarta Sans', sans-serif;
  --font-hd: 'Space Grotesk', sans-serif;
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.5;
}
body::before {
  content: '';
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background: radial-gradient(ellipse 70% 40% at 50% -10%,
    rgba(79,126,248,.07) 0%, transparent 70%);
}
a { color: var(--accent); cursor: pointer; text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== UTILITIES ===== */
.hidden  { display: none !important; }
.muted   { color: var(--text2); font-size: 13.5px; }
.mb      { margin-bottom: 16px; }
.flex1   { flex: 1; min-width: 0; }
.w90     { width: 90px; }
.w120    { width: 120px; }
.self-end{ align-self: flex-end; }
.divider { border: none; border-top: 1px solid var(--border); margin: 18px 0; }
.form-label { display: block; font-size: 13px; color: var(--text2); font-weight: 500; margin-bottom: 8px; }

/* ===== TYPOGRAPHY ===== */
h1 { font-family: var(--font-hd); font-size: 26px; font-weight: 700; }
h2 { font-family: var(--font-hd); font-size: 28px; font-weight: 700; }
h3 { font-family: var(--font-hd); font-size: 17px; font-weight: 700; }

/* ===== NAV ===== */
nav {
  position: sticky; top: 0; z-index: 100;
  height: 58px; padding: 0 20px;
  display: flex; align-items: center; gap: 2px;
  background: rgba(13,15,20,.93);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  display: flex; align-items: center; gap: 9px;
  margin-right: 14px; user-select: none; flex-shrink: 0;
}
.nav-logo-icon {
  width: 32px; height: 32px; border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), #7b5ef8);
  display: flex; align-items: center; justify-content: center; font-size: 15px;
}
.nav-logo span { font-family: var(--font-hd); font-weight: 700; font-size: 14px; }
.nav-btn {
  background: none; border: none; color: var(--text2); cursor: pointer;
  padding: 6px 12px; border-radius: 8px;
  font-family: var(--font); font-size: 13px; font-weight: 500;
  transition: all .15s; white-space: nowrap;
}
.nav-btn:hover { background: var(--bg3); color: var(--text); }
.nav-btn.active { background: var(--bg3); color: var(--accent); font-weight: 600; }
.nav-logout { color: var(--danger) !important; }
.nav-logout:hover { background: rgba(248,95,95,.1) !important; }
.nav-spacer { flex: 1; }
.nav-coins {
  display: flex; align-items: center; gap: 5px;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 20px; padding: 4px 13px;
  font-size: 13px; color: var(--accent2); font-weight: 600; flex-shrink: 0;
}
.nav-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #7b5ef8);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-hd); font-weight: 700; font-size: 13px;
  cursor: pointer; overflow: hidden; border: 2px solid var(--border);
  transition: border-color .2s; flex-shrink: 0;
}
.nav-avatar:hover { border-color: var(--accent); }
.nav-avatar img { width: 100%; height: 100%; object-fit: cover; }

/* ===== AUTH ===== */
.auth-page {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: 20px; position: relative; z-index: 1;
}
.auth-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 20px; padding: 44px 40px; width: 100%; max-width: 420px;
  box-shadow: var(--shadow);
}
.auth-icon {
  width: 58px; height: 58px; border-radius: 16px;
  background: linear-gradient(135deg, var(--accent), #7b5ef8);
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; margin: 0 auto 18px;
}
.auth-card h1 { text-align: center; margin-bottom: 5px; }
.auth-card .muted { text-align: center; margin-bottom: 26px; }
.auth-switch { text-align: center; margin-top: 16px; font-size: 13px; color: var(--text2); }

/* ===== FORMS ===== */
.form-group { margin-bottom: 15px; }
.form-group label {
  display: block; font-size: 13px; font-weight: 500;
  color: var(--text2); margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 13px;
  color: var(--text); font-family: var(--font); font-size: 14px;
  outline: none; transition: border-color .2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--accent); }
.form-group input.readonly { opacity: .55; cursor: not-allowed; }
.form-group textarea { resize: vertical; min-height: 70px; }
.form-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-start; }

/* Input with icon / password toggle */
.input-wrap {
  position: relative; display: flex; align-items: center;
}
.input-wrap input { padding-left: 36px; padding-right: 40px; }
.input-icon {
  position: absolute; left: 11px; font-size: 14px;
  pointer-events: none; user-select: none;
}
.pw-toggle {
  position: absolute; right: 8px;
  background: none; border: none; cursor: pointer;
  font-size: 14px; padding: 4px; opacity: .6;
  transition: opacity .15s;
}
.pw-toggle:hover { opacity: 1; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px; padding: 10px 18px; border-radius: 10px; border: none;
  cursor: pointer; font-family: var(--font); font-size: 13.5px;
  font-weight: 600; transition: all .15s; white-space: nowrap;
}
.btn-primary   { background: var(--accent); color: #fff; }
.btn-primary:hover   { background: #3a6ae8; transform: translateY(-1px); box-shadow: 0 4px 14px rgba(79,126,248,.3); }
.btn-secondary { background: var(--bg3); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }
.btn-danger    { background: var(--danger); color: #fff; }
.btn-danger:hover    { background: #e04040; }
.btn-success   { background: var(--accent3); color: #071a10; }
.btn-success:hover   { background: #3bc881; }
.btn-sm   { padding: 5px 11px; font-size: 12.5px; border-radius: 8px; }
.btn-full { width: 100%; }

/* ===== PAGE LAYOUT ===== */
.page {
  max-width: 1080px; margin: 0 auto;
  padding: 30px 22px; position: relative; z-index: 1;
}
.page-header {
  display: flex; align-items: flex-start;
  justify-content: space-between; gap: 16px;
  margin-bottom: 22px; flex-wrap: wrap;
}
.page-header h2 { margin-bottom: 3px; }

/* ===== COINS BANNER ===== */
.coins-banner {
  display: flex; align-items: center; gap: 12px;
  background: linear-gradient(135deg, rgba(248,184,79,.1), rgba(248,184,79,.03));
  border: 1px solid rgba(248,184,79,.22);
  border-radius: 14px; padding: 13px 18px;
}
.coins-icon  { font-size: 26px; }
.coins-label { font-size: 11px; color: var(--text2); text-transform: uppercase; letter-spacing: .5px; }
.coins-val   { font-family: var(--font-hd); font-size: 26px; font-weight: 700; color: var(--accent2); }

/* ===== TABS ===== */
.tabs-row {
  display: flex;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 12px; padding: 4px; gap: 2px;
  overflow-x: auto; margin-bottom: 18px; flex-shrink: 0;
}
.tab-btn {
  flex: 1; padding: 8px 10px; border-radius: 8px;
  background: none; border: none; color: var(--text2);
  cursor: pointer; font-family: var(--font); font-size: 13px;
  font-weight: 500; transition: all .15s; white-space: nowrap; min-width: 70px;
}
.tab-btn:hover  { color: var(--text); background: var(--bg3); }
.tab-btn.active { background: var(--card); color: var(--text); font-weight: 600;
  box-shadow: 0 2px 8px rgba(0,0,0,.3); }
.tab-btn.today  { color: var(--accent); }
.tab-btn.vacation { color: #f87 !important; }

/* ===== CARDS ===== */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px;
}
.card-title {
  font-family: var(--font-hd); font-weight: 700; font-size: 14.5px;
  margin-bottom: 16px; display: flex; align-items: center; gap: 7px;
}

/* ===== LESSON CARDS ===== */
.lessons-list { display: flex; flex-direction: column; gap: 8px; }
.lesson-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 15px 17px;
  display: flex; align-items: flex-start; gap: 13px; transition: border-color .2s;
}
.lesson-card:hover { border-color: rgba(79,126,248,.25); }
.lesson-card.is-current { border-color: var(--accent); background: rgba(79,126,248,.04); }
.lesson-time {
  font-family: var(--font-hd); font-size: 12px; font-weight: 600;
  color: var(--text3); white-space: nowrap; padding-top: 2px; min-width: 42px;
}
.lesson-thumb {
  width: 46px; height: 46px; border-radius: 9px;
  background: var(--bg3); flex-shrink: 0;
  overflow: hidden; display: flex; align-items: center; justify-content: center;
  font-size: 20px;
}
.lesson-thumb img { width: 100%; height: 100%; object-fit: cover; }
.lesson-body { flex: 1; min-width: 0; }
.lesson-title-row {
  display: flex; align-items: center; flex-wrap: wrap;
  gap: 7px; margin-bottom: 3px;
}
.lesson-title   { font-weight: 700; font-size: 14.5px; }
.lesson-subject { font-size: 13px; color: var(--text2); }
.lesson-question{ font-size: 13.5px; margin-top: 4px; }
.lesson-actions { display: flex; gap: 7px; align-items: center; flex-shrink: 0; }

/* Badges */
.badge {
  display: inline-flex; align-items: center;
  padding: 2px 8px; border-radius: 20px;
  font-size: 11px; font-weight: 600; letter-spacing: .1px;
}
.badge-open    { background: rgba(79,216,158,.1); color: var(--accent3); border: 1px solid rgba(79,216,158,.28); }
.badge-closed  { background: rgba(100,110,140,.1); color: var(--text3); border: 1px solid var(--border); }
.badge-results { background: rgba(248,184,79,.1); color: var(--accent2); border: 1px solid rgba(248,184,79,.28); }
.badge-now     { background: rgba(79,126,248,.12); color: var(--accent); border: 1px solid rgba(79,126,248,.28); }

.bets-mini { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 7px; }
.bet-chip {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 20px; padding: 2px 8px; font-size: 11.5px; color: var(--text2);
}
.bet-chip.winner { border-color: rgba(79,216,158,.35); color: var(--accent3); background: rgba(79,216,158,.06); }

.result-block {
  background: linear-gradient(135deg, rgba(79,216,158,.06), rgba(79,216,158,.02));
  border: 1px solid rgba(79,216,158,.18);
  border-radius: 9px; padding: 11px 14px; margin-top: 9px;
}
.result-val { font-family: var(--font-hd); font-size: 28px; font-weight: 700; color: var(--accent3); }

/* vacation */
.vacation-banner {
  background: linear-gradient(135deg, rgba(248,95,95,.07), rgba(248,95,95,.02));
  border: 1px solid rgba(248,95,95,.18);
  border-radius: var(--radius); padding: 32px; text-align: center;
}
.vacation-banner h3 { color: #f87; margin-bottom: 7px; font-size: 20px; }

/* ===== LEADERBOARD ===== */
.lb-list { display: flex; flex-direction: column; gap: 7px; }
.lb-item {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 13px 17px;
  display: flex; align-items: center; gap: 13px; transition: border-color .2s;
}
.lb-item:hover  { border-color: rgba(79,126,248,.25); }
.lb-item.lb-you { border-color: var(--accent); }
.lb-rank { font-family: var(--font-hd); font-weight: 700; font-size: 19px; width: 30px; text-align: center; }
.lb-rank.gold   { color: #f8b84f; }
.lb-rank.silver { color: #a8b8d0; }
.lb-rank.bronze { color: #cd7c4a; }
.lb-avatar {
  width: 38px; height: 38px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #7b5ef8);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 14px; overflow: hidden; flex-shrink: 0;
}
.lb-avatar img { width: 100%; height: 100%; object-fit: cover; }
.lb-name  { flex: 1; font-weight: 500; }
.lb-coins { font-family: var(--font-hd); font-weight: 700; color: var(--accent2); font-size: 16px; }

/* ===== CHAT ===== */
.chat-wrap {
  display: flex; flex-direction: column;
  height: calc(100vh - 220px); min-height: 300px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
}
.chat-messages {
  flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 8px;
}
.chat-msg {
  display: flex; gap: 9px; align-items: flex-start; animation: msgIn .18s ease;
}
.chat-msg.mine { flex-direction: row-reverse; }
@keyframes msgIn { from { opacity:0; transform: translateY(6px); } to { opacity:1; transform: none; } }
.chat-avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #7b5ef8);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; flex-shrink: 0; overflow: hidden;
}
.chat-avatar img { width: 100%; height: 100%; object-fit: cover; }
.chat-bubble {
  max-width: 65%; background: var(--bg3); border: 1px solid var(--border);
  border-radius: 12px; padding: 8px 12px; font-size: 13.5px; word-break: break-word;
}
.chat-msg.mine .chat-bubble {
  background: rgba(79,126,248,.15); border-color: rgba(79,126,248,.3);
}
.chat-meta {
  font-size: 11px; color: var(--text3); margin-bottom: 3px;
  display: flex; align-items: center; gap: 5px;
}
.chat-msg.mine .chat-meta { flex-direction: row-reverse; }
.chat-name  { font-weight: 600; color: var(--text2); }
.chat-time  { }
.chat-del   { cursor: pointer; opacity: .5; transition: opacity .15s; font-size: 10px; }
.chat-del:hover { opacity: 1; color: var(--danger); }
.chat-input-row {
  display: flex; gap: 8px; padding: 12px 14px;
  border-top: 1px solid var(--border); background: var(--bg2);
}
.chat-input-row input {
  flex: 1; background: var(--bg3); border: 1px solid var(--border);
  border-radius: 10px; padding: 9px 13px; color: var(--text);
  font-family: var(--font); font-size: 14px; outline: none;
}
.chat-input-row input:focus { border-color: var(--accent); }

/* ===== PROFILE ===== */
.profile-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.swatches { display: flex; flex-wrap: wrap; gap: 8px; }
.swatch {
  width: 27px; height: 27px; border-radius: 50%; cursor: pointer;
  border: 2px solid transparent; transition: all .15s;
}
.swatch:hover, .swatch.active { border-color: #fff; transform: scale(1.15); }

/* ===== ADMIN ===== */
.admin-layout { display: grid; grid-template-columns: 190px 1fr; gap: 18px; }
.admin-sidebar { display: flex; flex-direction: column; gap: 2px; }
.admin-nav {
  background: none; border: none; color: var(--text2); cursor: pointer;
  padding: 8px 13px; border-radius: 9px; font-family: var(--font); font-size: 13.5px;
  text-align: left; transition: all .15s; display: flex; align-items: center; gap: 7px;
}
.admin-nav:hover  { background: var(--bg3); color: var(--text); }
.admin-nav.active { background: rgba(79,126,248,.1); color: var(--accent); font-weight: 600; }
.admin-content    { min-width: 0; }
.admin-tab        { display: none; }
.admin-tab.active { display: block; }

.admin-lesson-row {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 10px; padding: 13px 15px; margin-bottom: 9px;
}
.admin-lesson-row .row-header {
  font-weight: 600; font-size: 13.5px; color: var(--text2); margin-bottom: 10px;
  display: flex; align-items: center; gap: 8px;
}
.admin-field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }

.admin-question-row {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 10px; padding: 13px 15px; margin-bottom: 9px;
}
.admin-question-row .row-header {
  font-weight: 600; font-size: 13.5px; margin-bottom: 10px;
}
.status-row   { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 9px; }
.apply-row    { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 7px; }

/* Lesson times editor */
.time-row {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 0; border-bottom: 1px solid rgba(37,42,56,.5);
}
.time-row:last-child { border-bottom: none; }
.time-label { font-size: 13px; color: var(--text2); width: 80px; }
.time-input {
  background: var(--bg2); border: 1px solid var(--border); border-radius: 8px;
  padding: 5px 10px; color: var(--text); font-family: var(--font); font-size: 13.5px;
  outline: none; width: 100px;
}
.time-input:focus { border-color: var(--accent); }

/* Table */
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th { text-align: left; padding: 7px 11px; color: var(--text2); font-size: 12px;
     font-weight: 600; letter-spacing: .4px; border-bottom: 1px solid var(--border); }
td { padding: 9px 11px; border-bottom: 1px solid rgba(37,42,56,.4); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
.td-input {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 7px; padding: 5px 8px; color: var(--text);
  font-family: var(--font); font-size: 13px; outline: none; width: 90px;
}
.td-input:focus { border-color: var(--accent); }

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.72); z-index: 200;
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 18px; padding: 26px; width: 100%; max-width: 430px;
  box-shadow: var(--shadow);
}
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 5px; }
.modal-close {
  background: var(--bg3); border: 1px solid var(--border); color: var(--text2);
  cursor: pointer; width: 28px; height: 28px; border-radius: 7px;
  display: flex; align-items: center; justify-content: center; font-size: 12px; transition: all .15s;
}
.modal-close:hover { color: var(--text); }
.modal .muted { margin-bottom: 18px; }
.slider-block { padding: 7px 0; }
.slider-info  { display: flex; justify-content: space-between; font-size: 13px; color: var(--text2); margin-bottom: 6px; }
.slider-val   { font-family: var(--font-hd); font-size: 21px; font-weight: 700; color: var(--accent); }
input[type=range] { width: 100%; accent-color: var(--accent); cursor: pointer; }
.modal-btns   { display: flex; gap: 9px; margin-top: 18px; }

/* ===== TOAST ===== */
#toastContainer { position: fixed; bottom: 22px; right: 22px; z-index: 9999;
  display: flex; flex-direction: column; gap: 7px; }
.toast {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 10px; padding: 11px 16px; font-size: 13.5px;
  box-shadow: var(--shadow); animation: toastIn .2s ease; max-width: 300px;
}
.toast.success { border-color: rgba(79,216,158,.4); }
.toast.error   { border-color: rgba(248,95,95,.4); color: #f87; }
@keyframes toastIn { from { transform: translateX(14px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .admin-layout    { grid-template-columns: 1fr; }
  .profile-grid    { grid-template-columns: 1fr; }
  .admin-sidebar   { flex-direction: row; flex-wrap: wrap; }
  .admin-nav       { padding: 6px 9px; font-size: 12px; }
  .page            { padding: 18px 13px; }
  h2               { font-size: 22px; }
  nav              { padding: 0 10px; gap: 1px; }
  .nav-logo span   { display: none; }
  .auth-card       { padding: 28px 18px; }
  .admin-field-grid{ grid-template-columns: 1fr; }
  .chat-wrap       { height: calc(100vh - 180px); }
}