/* ============================================================
   StudyBloom - Main CSS
   Cute, pastel, fun -- a garden for your mind 
   ============================================================ */

:root {
  /* Core palette */
  --pink:          #FFB3C6;
  --pink-dark:     #FF85A1;
  --pink-soft:     #ffe4ed;
  --peach:         #FFCBA4;
  --peach-soft:    #ffedd5;
  --yellow:        #FFF0A0;
  --yellow-soft:   #fef9c3;
  --mint:          #B5EAD7;
  --mint-dark:     #7ED9B8;
  --mint-soft:     #d1fae5;
  --lavender:      #C4B5FD;
  --lavender-dark: #7c3aed;
  --lavender-soft: #ede9fe;
  --sky:           #BAE6FD;
  --sky-soft:      #e0f2fe;
  --white:         #FFFBFF;

  /* Surfaces */
  --card-bg:    rgba(255,255,255,0.85);
  --sidebar-bg: #FFF0F5;
  --border:     rgba(255,180,210,0.4);
  --shadow:     0 4px 24px rgba(200,100,150,0.10);

  /* Text */
  --text:       #3D2C45;
  --text-soft:  #7A6585;
  --text-dark:  #1f2937;
  --text-muted: #6b7280;

  /* Layout */
  --radius:     18px;
  --radius-sm:  12px;
  --sidebar-w:  240px;
  --transition: all 0.3s cubic-bezier(0.34,1.56,0.64,1);

  /* Fonts */
  --font-main:    'Nunito', sans-serif;
  --font-display: 'Comfortaa', cursive;
  --font-body:    'Quicksand', sans-serif;
}

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

body {
  font-family: var(--font-body);
  background: linear-gradient(135deg, #FFF0F5 0%, #F0FFF8 50%, #FFF8F0 100%);
  min-height: 100vh;
  color: var(--text);
  overflow-x: hidden;
}

/* ---- PETAL BACKGROUND ---- */
#petal-container {
  position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden;
}
.petal {
  position: absolute; top: -40px; border-radius: 50% 50% 30% 70%;
  opacity: 0.18; animation: petalFall linear infinite;
}
@keyframes petalFall {
  0%   { transform: translateY(-50px) rotate(0deg); opacity: 0.18; }
  100% { transform: translateY(110vh) rotate(720deg); opacity: 0; }
}

/* ---- SIDEBAR ---- */
.sidebar {
  position: fixed; left: 0; top: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  border-right: 1.5px solid var(--border);
  display: flex; flex-direction: column;
  z-index: 100;
  box-shadow: 4px 0 20px rgba(200,100,150,0.08);
  transition: transform 0.35s ease;
  backdrop-filter: blur(12px);
}
.sidebar.collapsed { transform: translateX(calc(-1 * var(--sidebar-w) + 60px)); }

.sidebar-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 16px 16px;
  border-bottom: 1.5px solid var(--border);
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display); font-size: 1.3rem; font-weight: 700;
  color: var(--pink-dark);
}
.logo-icon { font-size: 1.6rem; animation: spin3d 6s linear infinite; }
@keyframes spin3d { 0%{transform:rotateY(0)} 100%{transform:rotateY(360deg)} }

.sidebar-toggle {
  background: none; border: none; cursor: pointer;
  color: var(--text-soft); font-size: 1.1rem; padding: 4px 6px; border-radius: 8px;
}
.sidebar-toggle:hover { background: var(--pink); color: var(--white); }

.nav-links { list-style: none; padding: 12px 10px; flex: 1; overflow-y: auto; }
.nav-links::-webkit-scrollbar { width: 4px; }
.nav-links::-webkit-scrollbar-thumb { background: var(--pink); border-radius: 4px; }

.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px; border-radius: var(--radius-sm);
  color: var(--text-soft); text-decoration: none;
  font-weight: 600; font-size: 0.88rem;
  transition: var(--transition); margin-bottom: 4px;
  white-space: nowrap;
}
.nav-item i { font-size: 1rem; width: 20px; text-align: center; }
.nav-item:hover, .nav-item.active {
  background: linear-gradient(135deg, var(--pink), var(--peach));
  color: white; transform: translateX(4px);
  box-shadow: 0 4px 12px rgba(255,133,161,0.3);
}
.nav-item.active { font-weight: 700; }

.sidebar-footer {
  padding: 14px; border-top: 1.5px solid var(--border);
}
.xp-bar-mini .xp-label {
  font-size: 0.8rem; font-weight: 700; color: var(--text-soft); margin-bottom: 6px; display: block;
}
.xp-track {
  height: 8px; background: rgba(200,150,200,0.2);
  border-radius: 99px; overflow: hidden;
}
.xp-fill {
  height: 100%; background: linear-gradient(90deg, var(--mint-dark), var(--lavender));
  border-radius: 99px; transition: width 0.6s ease;
}

/* ---- MAIN CONTENT ---- */
.main-content {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  transition: margin-left 0.35s ease;
  position: relative; z-index: 1;
}

/* ---- TOPBAR ---- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  background: rgba(255,255,255,0.75);
  backdrop-filter: blur(16px);
  border-bottom: 1.5px solid var(--border);
  position: sticky; top: 0; z-index: 50;
  box-shadow: 0 2px 16px rgba(200,100,150,0.07);
}
.topbar-left { display: flex; align-items: center; gap: 14px; }
.mobile-menu-btn {
  display: none; background: none; border: none; font-size: 1.3rem;
  cursor: pointer; color: var(--text-soft);
}
.page-title {
  font-family: var(--font-display); font-size: 1.3rem;
  font-weight: 700; color: var(--text);
}
.topbar-right { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }

.streak-badge, .bloom-points {
  display: flex; align-items: center; gap: 6px;
  background: var(--card-bg); border: 1.5px solid var(--border);
  padding: 6px 14px; border-radius: 99px;
  font-weight: 700; font-size: 0.85rem; color: var(--text);
}
.streak-badge i { color: #FF6B35; }
.bloom-points i { color: var(--yellow); text-shadow: 0 0 8px gold; }

.avatar-wrap { display: flex; align-items: center; gap: 8px; cursor: pointer; }
.avatar {
  width: 38px; height: 38px; border-radius: 50%;
  border: 2.5px solid var(--pink); background: var(--pink);
  box-shadow: 0 0 0 3px rgba(255,180,200,0.3);
}
.avatar-name { font-weight: 700; font-size: 0.88rem; color: var(--text); }

/* ---- PAGE CONTAINER ---- */
.page-container {
  padding: 28px; min-height: calc(100vh - 70px);
}

/* ---- SECTION HEADERS ---- */
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px; flex-wrap: wrap; gap: 12px;
}
.section-title {
  font-family: var(--font-display); font-size: 1.6rem;
  font-weight: 700; color: var(--text);
  display: flex; align-items: center; gap: 10px;
}

/* ---- CARDS ---- */
.card {
  background: var(--card-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 10px 32px rgba(200,100,150,0.14); }

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; }

/* ---- BUTTONS ---- */
.btn-primary {
  background: linear-gradient(135deg, var(--pink-dark), #E879A0);
  color: white; border: none; border-radius: 99px;
  padding: 10px 24px; font-weight: 700; font-family: var(--font-body);
  font-size: 0.9rem; cursor: pointer;
  box-shadow: 0 4px 14px rgba(255,133,161,0.4);
  transition: var(--transition);
}
.btn-primary:hover { transform: scale(1.05); box-shadow: 0 6px 20px rgba(255,133,161,0.5); }

.btn-secondary {
  background: white; color: var(--pink-dark);
  border: 2px solid var(--pink); border-radius: 99px;
  padding: 9px 22px; font-weight: 700; font-size: 0.9rem;
  cursor: pointer; font-family: var(--font-body); transition: var(--transition);
}
.btn-secondary:hover { background: var(--pink); color: white; transform: scale(1.04); }

.btn-mint {
  background: linear-gradient(135deg, var(--mint-dark), #4ECDC4);
  color: white; border: none; border-radius: 99px;
  padding: 10px 22px; font-weight: 700; font-size: 0.9rem;
  cursor: pointer; font-family: var(--font-body); transition: var(--transition);
}
.btn-mint:hover { transform: scale(1.05); box-shadow: 0 4px 14px rgba(78,205,196,0.4); }

.btn-yellow {
  background: linear-gradient(135deg, #FFDA44, #FFC300);
  color: var(--text); border: none; border-radius: 99px;
  padding: 10px 22px; font-weight: 700; font-size: 0.9rem;
  cursor: pointer; font-family: var(--font-body); transition: var(--transition);
}
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }
.btn-icon {
  background: none; border: 1.5px solid var(--border); border-radius: 50%;
  width: 36px; height: 36px; cursor: pointer; font-size: 0.9rem;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition); color: var(--text-soft);
}
.btn-icon:hover { background: var(--pink); color: white; border-color: var(--pink); }

/* ---- INPUTS & FORMS ---- */
.input-field {
  width: 100%; padding: 11px 16px;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.9); color: var(--text);
  font-family: var(--font-body); font-size: 0.92rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  outline: none;
}
.input-field:focus {
  border-color: var(--pink); 
  box-shadow: 0 0 0 3px rgba(255,133,161,0.2);
}

select.input-field { cursor: pointer; }
textarea.input-field { resize: vertical; min-height: 80px; }

.form-group { margin-bottom: 16px; }
.form-label {
  display: block; font-weight: 700; font-size: 0.85rem;
  color: var(--text-soft); margin-bottom: 6px;
}

/* ---- PROGRESS BARS ---- */
.progress-wrap { background: rgba(200,150,200,0.15); border-radius: 99px; overflow: hidden; }
.progress-bar {
  height: 100%; border-radius: 99px;
  background: linear-gradient(90deg, var(--pink), var(--lavender));
  transition: width 0.7s cubic-bezier(0.4,0,0.2,1);
}
.progress-bar.mint { background: linear-gradient(90deg, var(--mint-dark), var(--sky)); }
.progress-bar.yellow { background: linear-gradient(90deg, var(--yellow), var(--peach)); }
.progress-bar.multi { background: linear-gradient(90deg, #FF85A1, #C4B5FD, #7ED9B8); }

/* ---- STAT CARDS (dashboard) ---- */
.stat-card {
  background: var(--card-bg); border-radius: var(--radius);
  padding: 20px; text-align: center;
  border: 1.5px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.stat-card:hover { transform: translateY(-4px) scale(1.02); }
.stat-number {
  font-family: var(--font-display); font-size: 2.4rem;
  font-weight: 700; color: var(--pink-dark);
}
.stat-label { font-size: 0.82rem; color: var(--text-soft); font-weight: 600; margin-top: 4px; }
.stat-icon { font-size: 1.8rem; margin-bottom: 8px; }

/* ---- BADGES ---- */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 12px; border-radius: 99px;
  font-size: 0.78rem; font-weight: 700;
}
.badge-pink { background: rgba(255,180,198,0.3); color: var(--pink-dark); border: 1px solid var(--pink); }
.badge-mint { background: rgba(181,234,215,0.3); color: #2A9D8F; border: 1px solid var(--mint-dark); }
.badge-yellow { background: rgba(255,240,160,0.4); color: #B08000; border: 1px solid #FFDA44; }
.badge-purple { background: rgba(196,181,253,0.3); color: #6C3FBE; border: 1px solid var(--lavender); }

/* ---- TAGS ---- */
.tag {
  display: inline-block; padding: 3px 10px; border-radius: 99px;
  font-size: 0.78rem; font-weight: 700; margin: 2px;
  background: rgba(255,179,198,0.2); color: var(--pink-dark);
  border: 1px solid rgba(255,133,161,0.3);
}

/* ---- MODAL ---- */
.modal-overlay {
  position: fixed; inset: 0; z-index: 999;
  background: rgba(60,20,60,0.35); backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  animation: fadeIn 0.25s ease;
}
.modal {
  background: var(--white); border-radius: 24px;
  padding: 32px; max-width: 480px; width: 92%;
  box-shadow: 0 20px 60px rgba(200,100,150,0.25);
  animation: popIn 0.35s cubic-bezier(0.34,1.56,0.64,1);
  position: relative;
}
@keyframes popIn { from{transform:scale(0.7);opacity:0} to{transform:scale(1);opacity:1} }
@keyframes fadeIn { from{opacity:0} to{opacity:1} }

.modal-close {
  position: absolute; top: 14px; right: 16px;
  background: none; border: none; font-size: 1.3rem;
  cursor: pointer; color: var(--text-soft); line-height: 1;
}
.modal h2 { font-family: var(--font-display); margin-bottom: 14px; color: var(--text); }

/* ---- REWARD MODAL ---- */
.reward-modal { text-align: center; overflow: hidden; }
.reward-emoji { font-size: 5rem; animation: bounce 0.7s infinite alternate; }
@keyframes bounce { from{transform:translateY(0)} to{transform:translateY(-14px)} }
.reward-badge {
  margin: 14px auto; padding: 12px 24px;
  background: linear-gradient(135deg, var(--yellow), var(--peach));
  border-radius: var(--radius); font-size: 1rem; font-weight: 700; color: var(--text);
  min-height: 40px;
}

/* ---- TOAST ---- */
.toast-container { position: fixed; bottom: 24px; right: 24px; z-index: 9999; display: flex; flex-direction: column; gap: 10px; }
.toast {
  background: var(--white); border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 18px;
  min-width: 240px; max-width: 320px;
  display: flex; align-items: center; gap: 12px;
  box-shadow: 0 6px 24px rgba(200,100,150,0.2);
  animation: slideInRight 0.35s ease;
  font-weight: 600; font-size: 0.88rem;
}
@keyframes slideInRight { from{transform:translateX(100%);opacity:0} to{transform:translateX(0);opacity:1} }
.toast.success { border-left: 4px solid var(--mint-dark); }
.toast.error   { border-left: 4px solid var(--pink-dark); }
.toast.info    { border-left: 4px solid var(--lavender); }
.toast-icon    { font-size: 1.2rem; }
.toast-fadeout { animation: fadeOut 0.35s ease forwards; }
@keyframes fadeOut { to{opacity:0;transform:translateX(60px)} }

/* ---- SUBJECT COLORS ---- */
.subject-math     { --subj-color: #FF85A1; --subj-bg: rgba(255,133,161,0.12); }
.subject-physics  { --subj-color: #7EC8E3; --subj-bg: rgba(126,200,227,0.12); }
.subject-chem     { --subj-color: #7ED9B8; --subj-bg: rgba(126,217,184,0.12); }
.subject-bio      { --subj-color: #A8E6A3; --subj-bg: rgba(168,230,163,0.12); }
.subject-english  { --subj-color: #C4B5FD; --subj-bg: rgba(196,181,253,0.12); }
.subject-history  { --subj-color: #FFCBA4; --subj-bg: rgba(255,203,164,0.12); }
.subject-default  { --subj-color: #FF85A1; --subj-bg: rgba(255,133,161,0.12); }

.subject-pill {
  background: var(--subj-bg); color: var(--subj-color);
  border: 1.5px solid var(--subj-color);
  padding: 4px 12px; border-radius: 99px;
  font-size: 0.8rem; font-weight: 700;
}

/* ---- TABS ---- */
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 20px; }
.tab-btn {
  padding: 8px 18px; border-radius: 99px;
  background: rgba(255,179,198,0.15);
  border: 1.5px solid var(--border);
  font-weight: 700; font-size: 0.85rem; cursor: pointer;
  transition: var(--transition); color: var(--text-soft);
}
.tab-btn.active, .tab-btn:hover {
  background: linear-gradient(135deg, var(--pink), var(--peach));
  color: white; border-color: transparent;
  box-shadow: 0 3px 10px rgba(255,133,161,0.3);
}
.tab-pane { display: none; }
.tab-pane.active { display: block; animation: fadeIn 0.3s ease; }

/* ---- EMPTY STATE ---- */
.empty-state {
  text-align: center; padding: 50px 20px;
  color: var(--text-soft);
}
.empty-state .empty-icon { font-size: 3.5rem; margin-bottom: 14px; }
.empty-state h3 { font-family: var(--font-display); margin-bottom: 8px; }
.empty-state p { font-size: 0.9rem; }

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--pink); border-radius: 99px; }

/* ---- CHECKBOX CUSTOM ---- */
.custom-check { display: flex; align-items: flex-start; gap: 12px; cursor: pointer; }
.custom-check input { display: none; }
.check-box {
  width: 22px; height: 22px; border-radius: 7px;
  border: 2px solid var(--pink); flex-shrink: 0; margin-top: 1px;
  background: white; transition: var(--transition);
  display: flex; align-items: center; justify-content: center;
}
.custom-check input:checked ~ .check-box {
  background: linear-gradient(135deg, var(--pink), var(--peach));
  border-color: var(--pink-dark);
}
.custom-check input:checked ~ .check-box::after {
  content: '?'; color: white; font-weight: 900; font-size: 0.85rem;
}
.custom-check input:checked ~ .check-label { text-decoration: line-through; color: var(--text-soft); }

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .mobile-menu-btn { display: flex; }
  .topbar { padding: 12px 16px; }
  .page-container { padding: 16px; }
  .topbar-right { gap: 8px; }
  .streak-badge span, .bloom-points span { }
  .avatar-name { display: none; }
}
@media (max-width: 480px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section-title { font-size: 1.3rem; }
}

/* ---- ANIMATIONS ---- */
.fade-in { animation: fadeIn 0.4s ease; }
.slide-up { animation: slideUp 0.4s ease; }
@keyframes slideUp { from{transform:translateY(20px);opacity:0} to{transform:translateY(0);opacity:1} }

.pop-in { animation: popIn 0.35s cubic-bezier(0.34,1.56,0.64,1); }

/* ---- DIVIDER ---- */
.divider {
  height: 1.5px; background: var(--border);
  margin: 16px 0; border-radius: 99px;
}

/* ---- COLOR PICKER SWATCHES ---- */
.color-swatch-wrap { display: flex; gap: 8px; flex-wrap: wrap; }
.color-swatch {
  width: 28px; height: 28px; border-radius: 50%; cursor: pointer;
  border: 2.5px solid transparent; transition: var(--transition);
}
.color-swatch.selected, .color-swatch:hover {
  transform: scale(1.2); border-color: var(--text);
}

/* ---- DIFFICULTY LABELS ---- */
.diff-easy   { color: #2A9D8F; background: rgba(42,157,143,0.12); }
.diff-medium { color: #E9C46A; background: rgba(233,196,106,0.15); }
.diff-hard   { color: #E76F51; background: rgba(231,111,81,0.12); }

/* ??????????????????????????????????????????????????????????
   DASHBOARD STYLES
?????????????????????????????????????????????????????????? */
.dashboard-greeting {
  display:flex;justify-content:space-between;align-items:center;
  margin-bottom:1.5rem;flex-wrap:wrap;gap:1rem;
}
.greeting-text { font-family:'Comfortaa',cursive;font-size:1.8rem;font-weight:700;color:var(--pink-dark);margin:0; }
.greeting-date { color:var(--text-muted);font-size:.9rem;margin-top:.2rem; }
.streak-badge-big {
  background:linear-gradient(135deg,#fed7aa,#fde68a);
  padding:.6rem 1.4rem;border-radius:50px;font-weight:800;font-size:1rem;
  color:#92400e;box-shadow:0 2px 12px rgba(251,146,60,.3);
}

.garden-card {
  position:relative;border-radius:20px;overflow:hidden;
  margin-bottom:1.5rem;min-height:200px;
  box-shadow:0 4px 24px rgba(249,168,212,.25);
}
.garden-scene-container { width:100%;min-height:200px; }
.garden-card-overlay {
  position:absolute;bottom:0;left:0;right:0;
  background:linear-gradient(transparent,rgba(255,255,255,.85));
  padding:1rem 1.5rem;
}
.garden-level-info { display:flex;align-items:center;gap:1rem;flex-wrap:wrap; }
.garden-level-label { font-weight:700;color:var(--mint-dark);font-size:.9rem; }
.garden-xp-bar { flex:1;min-width:100px;height:8px;background:#e5e7eb;border-radius:50px;overflow:hidden; }
.garden-xp-fill { height:100%;background:linear-gradient(90deg,var(--mint-dark),#34d399);border-radius:50px;transition:width .6s ease; }
.garden-minutes { font-size:.8rem;color:var(--text-muted); }

.quick-stats { display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-bottom:1.5rem; }
@media(max-width:768px){ .quick-stats { grid-template-columns:repeat(2,1fr); } }

.stat-card {
  background:#fff;border-radius:16px;padding:1.2rem 1rem;text-align:center;
  cursor:pointer;transition:transform .2s,box-shadow .2s;
  box-shadow:0 2px 12px rgba(0,0,0,.06);
}
.stat-card:hover { transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,.1); }
.stat-card.pink { border-top:4px solid var(--pink-dark); }
.stat-card.yellow { border-top:4px solid #f59e0b; }
.stat-card.mint { border-top:4px solid var(--mint-dark); }
.stat-card.lavender { border-top:4px solid var(--lavender-dark); }
.stat-icon { font-size:1.5rem;margin-bottom:.3rem; }
.stat-value { font-size:1.4rem;font-weight:800;color:var(--text-dark); }
.stat-label { font-size:.8rem;font-weight:600;color:var(--text-muted); }
.stat-sub { font-size:.75rem;color:#9ca3af; }

.xp-card { margin-bottom:1.5rem; }

.dash-two-col { display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;margin-bottom:1.5rem; }
@media(max-width:768px){ .dash-two-col { grid-template-columns:1fr; } }

.next-exam-box { display:flex;gap:1rem;align-items:center; }

.week-chart { display:flex;gap:.4rem;height:80px;align-items:flex-end; }
.week-bar-col { flex:1;display:flex;flex-direction:column;align-items:center;gap:.3rem; }
.week-bar-wrapper { flex:1;width:100%;display:flex;align-items:flex-end; }
.week-bar { width:100%;min-height:4px;border-radius:6px 6px 0 0;transition:height .4s ease; }
.week-bar-label { font-size:.7rem;color:var(--text-muted); }

.quick-actions { display:flex;gap:.8rem;flex-wrap:wrap; }
.qa-btn {
  flex:1;min-width:120px;padding:.8rem 1rem;border:none;border-radius:12px;
  font-family:'Nunito',sans-serif;font-weight:700;font-size:.9rem;cursor:pointer;
  transition:transform .15s,box-shadow .15s;
}
.qa-btn:hover { transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.12); }
.qa-btn.pink { background:var(--pink-soft);color:var(--pink-dark); }
.qa-btn.yellow { background:var(--yellow-soft);color:#92400e; }
.qa-btn.mint { background:var(--mint-soft);color:var(--mint-dark); }
.qa-btn.lavender { background:var(--lavender-soft);color:var(--lavender-dark); }

.shimmer { position:relative;overflow:hidden; }
.shimmer::after {
  content:'';position:absolute;top:0;left:-100%;width:50%;height:100%;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);
  animation:shimmerMove 2s infinite;
}
@keyframes shimmerMove { to { left:200%; } }

/* ??????????????????????????????????????????????????????????
   REWARDS PAGE STYLES
?????????????????????????????????????????????????????????? */
.rewards-grid {
  display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));
  gap:1rem;margin-top:1rem;
}
.reward-card {
  background:#fff;border-radius:16px;padding:1.2rem 1rem;text-align:center;
  box-shadow:0 2px 12px rgba(0,0,0,.06);animation:fadeInUp .3s ease both;
  transition:transform .2s;
}
.reward-card:hover { transform:translateY(-4px); }
.reward-card.earned { border:2px solid var(--pink-soft);background:linear-gradient(135deg,#fff5f8,#fff); }
.reward-card.library { border:2px solid var(--lavender-soft); }
.reward-emoji { font-size:2.5rem;margin-bottom:.5rem; }
.reward-name { font-weight:700;font-size:.95rem;margin-bottom:.5rem;color:var(--text-dark); }
.reward-meta { display:flex;gap:.4rem;justify-content:center;flex-wrap:wrap;margin-bottom:.4rem; }
.reward-date { font-size:.75rem;color:var(--text-muted); }
.reward-for { font-size:.75rem;color:var(--text-muted);font-style:italic; }

.difficulty-badge {
  padding:.15rem .6rem;border-radius:50px;font-size:.7rem;font-weight:700;
}
.diff-easy { background:#d1fae5;color:#065f46; }
.diff-medium { background:#fef3c7;color:#92400e; }
.diff-hard { background:#fce7f3;color:#9d174d; }

.reward-category { padding:.15rem .6rem;border-radius:50px;font-size:.7rem;font-weight:600;background:#f3f4f6;color:#4b5563; }

.manage-reward-item {
  display:flex;align-items:center;gap:.8rem;padding:.6rem 0;
  border-bottom:1px solid #f3f4f6;flex-wrap:wrap;
}
.reward-emoji-sm { font-size:1.2rem; }
.reward-name-sm { flex:1;font-weight:600;font-size:.9rem; }
.btn-icon-danger { background:none;border:none;cursor:pointer;font-size:1rem;padding:.2rem; }

.form-grid { display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:.8rem; }

/* ??????????????????????????????????????????????????????????
   EXAM TRACKER STYLES
?????????????????????????????????????????????????????????? */
.exams-grid { display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1.5rem; }

.exam-card {
  background:#fff;border-radius:20px;padding:1.5rem;
  box-shadow:0 2px 16px rgba(0,0,0,.07);animation:fadeInUp .3s ease both;
  border-left:5px solid var(--mint-dark);
}
.exam-card.urgency-critical { border-left-color:#ef4444; }
.exam-card.urgency-soon { border-left-color:#f59e0b; }
.exam-card.urgency-ok { border-left-color:var(--mint-dark); }

.exam-card-header { display:flex;gap:1rem;align-items:flex-start;margin-bottom:1rem; }
.exam-icon { font-size:2.5rem;flex-shrink:0; }
.exam-info { flex:1; }
.exam-name { font-weight:800;font-size:1.05rem;color:var(--text-dark); }
.exam-meta { display:flex;gap:.5rem;margin-top:.3rem;flex-wrap:wrap; }
.exam-category { background:var(--lavender-soft);color:var(--lavender-dark);padding:.15rem .6rem;border-radius:50px;font-size:.72rem;font-weight:700; }
.exam-date-label { font-size:.8rem;color:var(--text-muted); }
.exam-status-col { flex-shrink:0; }

.status-days { padding:.3rem .8rem;border-radius:50px;font-weight:700;font-size:.82rem;background:#f3f4f6;color:#374151; }
.status-days.urgency-critical { background:#fef2f2;color:#ef4444; }
.status-days.urgency-soon { background:#fffbeb;color:#d97706; }
.status-today { background:#fef2f2;color:#ef4444;padding:.3rem .8rem;border-radius:50px;font-weight:800; }
.status-past { background:#f0fdf4;color:#16a34a;padding:.3rem .8rem;border-radius:50px;font-weight:700;font-size:.82rem; }

.exam-desc { font-size:.85rem;color:var(--text-muted);margin-bottom:.8rem; }
.exam-progress-section { margin-bottom:.8rem; }
.progress-slider { width:100%;accent-color:var(--pink-dark); }

.exam-subjects { display:flex;flex-direction:column;gap:.4rem; }
.exam-subject-item { display:flex;align-items:center;gap:.5rem;font-size:.85rem; }
.exam-subject-item input[type="checkbox"] { accent-color:var(--pink-dark);width:15px;height:15px; }

.btn-danger-sm { background:#fef2f2;color:#ef4444;border:1px solid #fca5a5;padding:.35rem .8rem;border-radius:8px;font-size:.8rem;font-weight:600;cursor:pointer; }
.btn-danger-sm:hover { background:#ef4444;color:#fff; }

/* ??????????????????????????????????????????????????????????
   MODAL STYLES
?????????????????????????????????????????????????????????? */
.modal-overlay {
  display:none;position:fixed;inset:0;background:rgba(0,0,0,.5);
  z-index:1000;align-items:center;justify-content:center;
  backdrop-filter:blur(4px);
}
.modal-overlay.active { display:flex; }
.modal-box {
  background:#fff;border-radius:24px;padding:2rem;max-width:420px;width:90%;
  animation:bounceIn .4s cubic-bezier(.34,1.56,.64,1);
  box-shadow:0 24px 80px rgba(0,0,0,.15);
}
@keyframes bounceIn {
  from { transform:scale(.7);opacity:0; }
  to { transform:scale(1);opacity:1; }
}

.reward-modal-box { text-align:center; }
.reward-modal-sparkles { font-size:1.5rem;letter-spacing:.5rem;margin-bottom:.5rem; }
.reward-modal-emoji { font-size:5rem;margin:.5rem 0;animation:pulse 1s infinite; }
@keyframes pulse { 0%,100%{transform:scale(1)} 50%{transform:scale(1.1)} }
.reward-modal-title { font-size:1.4rem;font-weight:800;color:var(--pink-dark);margin-bottom:.5rem; }
.reward-modal-name { font-size:1.2rem;font-weight:700;color:var(--text-dark);margin-bottom:.4rem; }
.reward-modal-goal { font-size:.9rem;color:var(--text-muted);margin-bottom:.3rem; }
.reward-modal-diff { font-size:.85rem;color:var(--lavender-dark);font-weight:600; }

/* ??????????????????????????????????????????????????????????
   TOAST STYLES
?????????????????????????????????????????????????????????? */
.toast-container {
  position:fixed;bottom:1.5rem;right:1.5rem;z-index:2000;
  display:flex;flex-direction:column;gap:.5rem;
}
.toast {
  display:flex;align-items:center;gap:.6rem;
  padding:.7rem 1.2rem;border-radius:12px;
  background:#fff;box-shadow:0 4px 16px rgba(0,0,0,.12);
  font-weight:600;font-size:.9rem;
  transform:translateX(120%);transition:transform .3s cubic-bezier(.34,1.56,.64,1);
  max-width:320px;
}
.toast.show { transform:translateX(0); }
.toast-success { border-left:4px solid var(--mint-dark); }
.toast-error { border-left:4px solid #ef4444; }
.toast-info { border-left:4px solid var(--lavender-dark); }
.toast-warning { border-left:4px solid #f59e0b; }
.toast-icon { font-size:1.1rem; }

/* ??????????????????????????????????????????????????????????
   SHARED UTILITY STYLES
?????????????????????????????????????????????????????????? */
.page-header { margin-bottom:1.5rem; }
.page-title { font-family:'Comfortaa',cursive;font-size:1.6rem;font-weight:700;color:var(--pink-dark); }
.page-subtitle { color:var(--text-muted);margin-top:.3rem;font-size:.9rem; }

.empty-state { text-align:center;padding:3rem 1rem;color:var(--text-muted); }

.card-title { font-weight:800;font-size:1rem;color:var(--text-dark);margin-bottom:1rem; }

.input-sm { padding:.4rem .8rem;font-size:.85rem; }
.btn-sm { padding:.4rem .8rem;font-size:.82rem; }

@keyframes fadeInUp {
  from { opacity:0;transform:translateY(16px); }
  to { opacity:1;transform:translateY(0); }
}

.btn-mint {
  background:var(--mint-soft);color:var(--mint-dark);border:none;
  padding:.6rem 1.2rem;border-radius:10px;font-family:'Nunito',sans-serif;
  font-weight:700;cursor:pointer;transition:background .2s;
}
.btn-mint:hover { background:var(--mint-dark);color:#fff; }

/* ??????????????????????????????????????????????????????????
   LAYOUT -- Main wrapper, sidebar logo, topbar, nav links
?????????????????????????????????????????????????????????? */
.main-layout {
  margin-left: var(--sidebar-w);
  display: flex; flex-direction: column; min-height: 100vh;
}
@media(max-width:768px){
  .main-layout { margin-left:0; }
}

.sidebar-logo {
  display:flex;align-items:center;gap:.6rem;
  padding:1.2rem 1rem;border-bottom:1.5px solid var(--border);
  font-family:'Comfortaa',cursive;font-size:1.2rem;font-weight:700;color:var(--pink-dark);
}
.logo-icon { font-size:1.5rem; }
.logo-text { font-weight:800; }

.sidebar-nav { flex:1;overflow-y:auto;padding:.8rem .5rem; }
.sidebar-nav::-webkit-scrollbar { width:3px; }
.sidebar-nav::-webkit-scrollbar-thumb { background:var(--pink);border-radius:4px; }

.nav-link {
  display:flex;align-items:center;gap:.7rem;
  padding:.65rem .9rem;border-radius:12px;text-decoration:none;
  color:var(--text);font-weight:600;font-size:.88rem;
  transition:background .18s,color .18s,transform .15s;margin-bottom:.2rem;
}
.nav-link:hover { background:var(--pink-soft);color:var(--pink-dark);transform:translateX(4px); }
.nav-link.active { background:linear-gradient(135deg,var(--pink-soft),var(--lavender-soft));color:var(--pink-dark); }
.nav-icon { font-size:1.1rem;width:22px;text-align:center; }
.nav-label { font-family:'Nunito',sans-serif; }

.sidebar-footer { padding:.8rem;border-top:1.5px solid var(--border); }
.sidebar-garden-meter {}

.sidebar-overlay {
  display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:99;
}
.sidebar-overlay.active { display:block; }

@media(max-width:768px){
  .sidebar { transform:translateX(-100%); }
  .sidebar.open { transform:translateX(0); }
}

/* Topbar */
.topbar {
  display:flex;align-items:center;gap:1rem;
  padding:.8rem 1.5rem;background:rgba(255,255,255,.85);
  border-bottom:1.5px solid var(--border);backdrop-filter:blur(12px);
  position:sticky;top:0;z-index:50;
}
.topbar-title {
  font-family:'Comfortaa',cursive;font-weight:700;font-size:1.1rem;
  color:var(--pink-dark);flex:1;
}
.topbar-stats { display:flex;gap:.6rem;flex-wrap:wrap; }
.topbar-stat {
  background:var(--pink-soft);color:var(--pink-dark);
  padding:.3rem .8rem;border-radius:50px;font-weight:700;font-size:.82rem;
}

.page-content { flex:1;overflow-y:auto; }
.page-container { padding:1.5rem;max-width:1100px;margin:0 auto; }
@media(max-width:768px){ .page-container { padding:1rem; } }

/* Petals */
.petals-container { position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden; }
.petal {
  position:absolute;top:-40px;border-radius:50% 50% 30% 70%;
  opacity:.15;animation:petalFall2 linear infinite;
}
@keyframes petalFall2 {
  0% { transform:translateY(-50px) rotate(0deg);opacity:.15; }
  100% { transform:translateY(110vh) rotate(720deg);opacity:0; }
}

/* Tabs */
.tabs { display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:1rem; }
.tab-btn {
  padding:.5rem 1.1rem;border-radius:50px;border:2px solid var(--pink-soft);
  background:#fff;color:var(--text-muted);font-family:'Nunito',sans-serif;
  font-weight:700;font-size:.85rem;cursor:pointer;transition:all .18s;
}
.tab-btn.active,.tab-btn:hover {
  background:var(--pink-soft);color:var(--pink-dark);border-color:var(--pink-dark);
}

/* Progress bar */
.progress-bar-bg {
  background:#f3f4f6;border-radius:50px;height:10px;overflow:hidden;
}
.progress-bar-fill {
  height:100%;border-radius:50px;background:var(--pink-dark);transition:width .5s ease;
}

/* Inputs */
.input-field {
  width:100%;padding:.6rem .9rem;border:1.5px solid var(--border);border-radius:10px;
  font-family:'Nunito',sans-serif;font-size:.9rem;background:#fff;color:var(--text-dark);
  transition:border-color .2s;
}
.input-field:focus { outline:none;border-color:var(--pink-dark); }

/* Form group */
.form-group { display:flex;flex-direction:column;gap:.3rem; }
.form-group label { font-size:.82rem;font-weight:700;color:var(--text-muted); }

/* Btn primary */
.btn-primary {
  background:linear-gradient(135deg,var(--pink-dark),var(--lavender-dark));
  color:#fff;border:none;padding:.7rem 1.5rem;border-radius:12px;
  font-family:'Nunito',sans-serif;font-weight:800;font-size:.95rem;
  cursor:pointer;transition:transform .15s,box-shadow .15s;
}
.btn-primary:hover { transform:translateY(-2px);box-shadow:0 6px 20px rgba(255,133,161,.4); }

/* Card */
.card {
  background:rgba(255,255,255,.9);border-radius:20px;padding:1.3rem;
  box-shadow:0 2px 16px rgba(0,0,0,.06);margin-bottom:1.2rem;
  backdrop-filter:blur(8px);border:1.5px solid rgba(255,180,210,.2);
}

/* Mobile menu btn */
.mobile-menu-btn {
  display:none;background:none;border:none;font-size:1.4rem;
  cursor:pointer;color:var(--pink-dark);padding:.2rem;
}
@media(max-width:768px){ .mobile-menu-btn { display:block; } }

/* Stats row (rewards page) */
.stats-row { display:flex;gap:1rem;margin-bottom:1.5rem;flex-wrap:wrap; }