/* ================================================================
   SUMMER PUZZLE  ·  Design System
   ----------------------------------------------------------------
   Re-theme for any event by editing the variables below.
   Everything else adapts automatically.
   ================================================================ */

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

/* Raise the root so all rem values scale up */
html {
  font-size: 16px;
}

:root {
  /* Palette */
  --primary:       #FF6B4A;
  --primary-dk:    #E5512F;
  --secondary:     #26C6DA;
  --secondary-dk:  #0097A7;
  --accent:        #FFB347;
  --bg:            #F8F6F0;
  --card:          #FFFFFF;
  --sidebar-bg:    #1A3C54;
  --text:          #2D3748;
  --text-muted:    #718096;
  --solved:        #38A169;

  /* Shape & depth */
  --radius:        14px;
  --radius-sm:     8px;
  --radius-pill:   50px;
  --shadow:        0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-sm:     0 2px 10px rgba(0, 0, 0, 0.06);
  --shadow-lift:   0 8px 32px rgba(0, 0, 0, 0.13);
}


/* ── 1. Base ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif !important;
  font-size: 16px !important;
  color: var(--text) !important;
}


/* ── 2. Header ────────────────────────────────────────────────── */
.main-header .navbar,
.skin-blue .main-header .navbar {
  background: var(--primary) !important;
  border-bottom: none !important;
  box-shadow: 0 2px 12px rgba(255, 107, 74, 0.28) !important;
}
.main-header .logo,
.skin-blue .main-header .logo {
  background: var(--primary-dk) !important;
  font-family: 'Inter', sans-serif !important;
  font-weight: 700 !important;
  font-size: 1.25rem !important;
  letter-spacing: 0.3px;
  color: #fff !important;
  border-right: 1px solid rgba(0,0,0,0.12) !important;
}
.main-header .navbar .nav > li > a,
.main-header .navbar .sidebar-toggle {
  color: rgba(255, 255, 255, 0.92) !important;
  font-size: 1.1rem !important;
}
.main-header .navbar .nav > li > a:hover,
.main-header .navbar .sidebar-toggle:hover {
  background: rgba(0, 0, 0, 0.1) !important;
  color: #fff !important;
}


/* ── 3. Sidebar ───────────────────────────────────────────────── */
.main-sidebar {
  background: var(--sidebar-bg) !important;
  box-shadow: 2px 0 16px rgba(0, 0, 0, 0.14) !important;
}
.sidebar-menu > li > a {
  font-family: 'Inter', sans-serif !important;
  font-size: 1.05rem !important;
  color: rgba(176, 196, 208, 0.88) !important;
  border-left: 3px solid transparent !important;
  padding: 13px 14px 13px 20px !important;
  transition: background 0.14s, color 0.14s, border-color 0.14s;
}
.sidebar-menu > li > a .fa {
  color: var(--secondary) !important;
  font-size: 1.2rem !important;
  width: 22px;
  text-align: center;
}
.sidebar-menu > li:hover > a {
  background: rgba(255, 107, 74, 0.13) !important;
  color: #fff !important;
  border-left-color: var(--primary) !important;
}
.sidebar-menu > li.active > a,
.sidebar-menu > li.active > a:hover {
  background: rgba(255, 107, 74, 0.2) !important;
  color: #fff !important;
  border-left-color: var(--primary) !important;
  font-weight: 600 !important;
}
/* Solved level indicator */
.solved-level {
  color: var(--solved) !important;
  font-weight: 600 !important;
}
.solved-level::before {
  content: '✓  ';
  font-weight: 700;
}
/* Section headers inside sidebar */
.sidebar-menu > li.header {
  color: rgba(176, 196, 208, 0.45) !important;
  font-size: 0.82rem !important;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  padding: 10px 16px 4px;
}
.sidebar-menu li .user-panel .info a {
  color: #CBD5E0 !important;
}


/* ── 4. Body / content area ───────────────────────────────────── */
.content-wrapper,
.right-side {
  background: var(--bg) !important;
}
.content {
  padding: 20px 24px 24px !important;
  font-size: 1rem !important;
}


/* ── 5. Puzzle card ───────────────────────────────────────────── */
.center-div {
  max-width: 860px;
  margin: 1.5rem auto;
  padding: 2.75rem 2.5rem;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
}
.center-div img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0 auto 1.5rem;
  border-radius: var(--radius-sm);
}
.center-div .welcome-image {
  max-width: 100%;
  border-radius: var(--radius-sm);
  margin-bottom: 0;
}
/* Level 16/17 stacked overlay images */
.center-div .image-container {
  position: relative;
  display: block;
  width: 100%;
  max-width: 860px;
  margin: 0 auto 1.5rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.center-div .image-container img {
  display: block;
  width: 100%;
  height: auto;
  margin: 0;
  border-radius: 0;
}
.center-div .image-container img.top {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: auto;
  z-index: 100;
}
.image-container {
  position: relative;
  display: inline-block;
}
.image-container img.top {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 100;
}


/* ── 6. Answer text input ─────────────────────────────────────── */
.center-div .form-group,
.center-div .shiny-input-container {
  text-align: center !important;
  display: block !important;
  width: 62% !important;
  margin: 0 auto 0.25rem !important;
}
.center-div input[type="text"],
.center-div .form-control {
  font-family: 'Inter', sans-serif !important;
  border: 2px solid #E2E8F0 !important;
  border-radius: var(--radius-pill) !important;
  padding: 0.75rem 1.5rem !important;
  font-size: 1.1rem !important;
  color: var(--text) !important;
  background: #fff !important;
  width: 100% !important;
  transition: border-color 0.18s, box-shadow 0.18s;
  box-shadow: none !important;
}
.center-div input[type="text"]:focus,
.center-div .form-control:focus {
  border-color: var(--secondary) !important;
  box-shadow: 0 0 0 3px rgba(38, 198, 218, 0.18) !important;
  outline: none !important;
}
.center-div label {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}


/* ── 7. Submit button  (.starry-night-button) ─────────────────── */
.btn.starry-night-button,
.starry-night-button {
  display: block !important;
  margin: 1.1rem auto 0 !important;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%) !important;
  color: #fff !important;
  border: none !important;
  border-radius: var(--radius-pill) !important;
  padding: 0.85rem 3.25rem !important;
  font-size: 1.2rem !important;
  font-weight: 600 !important;
  font-family: 'Inter', sans-serif !important;
  letter-spacing: 0.02em;
  cursor: pointer !important;
  box-shadow: 0 4px 16px rgba(255, 107, 74, 0.32) !important;
  transition: transform 0.12s ease, box-shadow 0.18s ease, opacity 0.15s ease !important;
  text-shadow: none !important;
}
.btn.starry-night-button:hover,
.starry-night-button:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 24px rgba(255, 107, 74, 0.42) !important;
  opacity: 0.93 !important;
  color: #fff !important;
}
.btn.starry-night-button:active,
.starry-night-button:active {
  transform: translateY(0) !important;
  box-shadow: 0 3px 10px rgba(255, 107, 74, 0.28) !important;
}


/* ── 8. Back / Next button  (.red-button) ─────────────────────── */
.btn.red-button,
.red-button {
  display: block !important;
  margin: 1.25rem auto 0 !important;
  background: linear-gradient(135deg, var(--secondary) 0%, #4DD0E1 100%) !important;
  color: #fff !important;
  border: none !important;
  border-radius: var(--radius-pill) !important;
  padding: 0.85rem 3.25rem !important;
  font-size: 1.2rem !important;
  font-weight: 600 !important;
  font-family: 'Inter', sans-serif !important;
  letter-spacing: 0.02em;
  cursor: pointer !important;
  box-shadow: 0 4px 16px rgba(38, 198, 218, 0.30) !important;
  transition: transform 0.12s ease, box-shadow 0.18s ease, opacity 0.15s ease !important;
  text-shadow: none !important;
}
.btn.red-button:hover,
.red-button:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 24px rgba(38, 198, 218, 0.40) !important;
  opacity: 0.93 !important;
  color: #fff !important;
}
.btn.red-button:active,
.red-button:active {
  transform: translateY(0) !important;
}


/* ── 9. Level 5 — scrollable language box ─────────────────────── */
.custom-box {
  border: 1px solid #EDF2F7 !important;
  border-radius: var(--radius) !important;
  background: var(--card) !important;
  box-shadow: var(--shadow-sm) !important;
  padding: 1.25rem !important;
  font-size: 1rem !important;
}


/* ── 10. Scoreboard ───────────────────────────────────────────── */
.box.box-primary {
  border-top: 3px solid var(--primary) !important;
  border-left: none !important;
  border-right: none !important;
  border-bottom: none !important;
  border-radius: var(--radius) !important;
  box-shadow: var(--shadow) !important;
  background: var(--card) !important;
}
.box-header.with-border {
  border-bottom: 1px solid #EDF2F7 !important;
  padding: 1rem 1.25rem !important;
}
.box-title {
  font-family: 'Inter', sans-serif !important;
  font-weight: 700 !important;
  font-size: 1.35rem !important;
  color: var(--text) !important;
}
.box-body {
  border-radius: 0 0 var(--radius) var(--radius);
}
/* DataTable */
.dataTables_wrapper {
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
}
table.dataTable thead th,
table.dataTable thead td {
  background: #F7FAFC !important;
  color: var(--text-muted) !important;
  font-size: 0.88rem !important;
  font-weight: 600 !important;
  text-transform: uppercase !important;
  letter-spacing: 0.08em !important;
  border-bottom: 2px solid #EDF2F7 !important;
  padding: 13px 16px !important;
}
table.dataTable tbody tr {
  background: var(--card) !important;
  transition: background 0.1s;
}
table.dataTable tbody tr:nth-child(even) {
  background: #FAFAFA !important;
}
table.dataTable tbody tr:hover {
  background: rgba(38, 198, 218, 0.07) !important;
}
table.dataTable tbody td {
  padding: 13px 16px !important;
  font-size: 1rem !important;
  border-top: 1px solid #EDF2F7 !important;
  color: var(--text) !important;
  vertical-align: middle !important;
}
table.dataTable.no-footer {
  border-bottom: 1px solid #EDF2F7 !important;
}
.dataTables_info,
.dataTables_length,
.dataTables_filter,
.dataTables_paginate {
  font-size: 0.95rem !important;
  color: var(--text-muted) !important;
  font-family: 'Inter', sans-serif !important;
  padding: 8px 4px !important;
}
.dataTables_paginate .paginate_button.current,
.dataTables_paginate .paginate_button.current:hover {
  background: var(--primary) !important;
  border-color: var(--primary) !important;
  color: #fff !important;
  border-radius: 6px !important;
}
.dataTables_paginate .paginate_button:hover {
  background: var(--bg) !important;
  border-color: #E2E8F0 !important;
  border-radius: 6px !important;
  color: var(--text) !important;
}


/* ── 11. Auth overlay ─────────────────────────────────────────── */
#auth_overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: linear-gradient(135deg, #FFF8EE 0%, #E0F7FA 55%, #F0FAFE 100%);
  overflow-y: auto;
}
.auth-wrap {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}
.auth-logo {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  margin-bottom: 1.5rem;
  display: block;
}
.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lift);
  overflow: hidden;
}
.auth-card-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: #fff;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
  padding: 1.2rem 1.75rem;
  letter-spacing: 0.02em;
}
.auth-card-body {
  padding: 2rem 2.25rem 2.25rem;
}
.auth-card-body .form-group {
  margin-bottom: 1rem;
}
.auth-card-body label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
  display: block;
  font-family: 'Inter', sans-serif;
}
.auth-card-body .form-control {
  font-family: 'Inter', sans-serif !important;
  border: 2px solid #E2E8F0 !important;
  border-radius: var(--radius-sm) !important;
  padding: 0.72rem 1rem !important;
  font-size: 1rem !important;
  color: var(--text) !important;
  background: #fff !important;
  box-shadow: none !important;
  width: 100% !important;
  transition: border-color 0.18s, box-shadow 0.18s;
}
.auth-card-body .form-control:focus {
  border-color: var(--secondary) !important;
  box-shadow: 0 0 0 3px rgba(38, 198, 218, 0.18) !important;
  outline: none !important;
}
.auth-card-body .btn.starry-night-button {
  width: 100% !important;
  margin-top: 0.5rem !important;
  display: block !important;
}
.auth-switch {
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 1.1rem;
  margin-bottom: 0;
}
.auth-switch .btn-link {
  color: var(--primary) !important;
  font-weight: 600 !important;
  text-decoration: none !important;
  padding: 0 !important;
  border: none !important;
  background: none !important;
  font-size: 0.9rem !important;
  box-shadow: none !important;
}
.auth-switch .btn-link:hover {
  text-decoration: underline !important;
  background: none !important;
  box-shadow: none !important;
}
.auth-error {
  color: #C53030;
  font-size: 0.88rem;
  font-weight: 500;
  margin: 0.5rem 0 0.25rem;
  padding: 0.5rem 0.75rem;
  background: #FFF5F5;
  border-radius: 6px;
  border-left: 3px solid #FC8181;
}
/* ── Logout button in sidebar ─────────────────────────────────── */
.main-sidebar .sidebar-logout-wrap {
  padding: 10px 14px 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  margin-top: 6px;
}
.btn-logout {
  width: 100% !important;
  background: rgba(255, 255, 255, 0.07) !important;
  color: #94A3B0 !important;
  border: 1px solid rgba(176, 196, 208, 0.18) !important;
  border-radius: var(--radius-sm) !important;
  font-family: 'Inter', sans-serif !important;
  font-size: 0.88rem !important;
  font-weight: 500 !important;
  padding: 0.48rem 0.75rem !important;
  text-align: left !important;
  box-shadow: none !important;
  transition: background 0.14s, color 0.14s, border-color 0.14s !important;
}
.btn-logout:hover,
.btn-logout:focus {
  background: rgba(255, 107, 74, 0.14) !important;
  color: #fff !important;
  border-color: rgba(255, 107, 74, 0.28) !important;
  box-shadow: none !important;
}
/* Generic .btn-primary for other AdminLTE elements */
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%) !important;
  border: none !important;
  border-radius: var(--radius-pill) !important;
  font-family: 'Inter', sans-serif !important;
  font-weight: 600 !important;
  box-shadow: 0 4px 14px rgba(255, 107, 74, 0.30) !important;
  transition: opacity 0.18s, transform 0.12s !important;
  text-shadow: none !important;
}
.btn-primary:hover,
.btn-primary:focus {
  background: linear-gradient(135deg, var(--primary-dk) 0%, var(--primary) 100%) !important;
  border: none !important;
  opacity: 0.93 !important;
  transform: translateY(-1px) !important;
  color: #fff !important;
}
.btn-primary:active {
  transform: translateY(0) !important;
  opacity: 1 !important;
}


/* ── 12. Custom scrollbar ──────────────────────────────────────── */
::-webkit-scrollbar          { width: 6px; height: 6px; }
::-webkit-scrollbar-track    { background: transparent; }
::-webkit-scrollbar-thumb    { background: #CBD5E0; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--secondary); }


/* ── 13. Countdown timer ──────────────────────────────────────── */
.timer-display {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  font-family: 'Inter', sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  white-space: nowrap;
  cursor: default;
  text-decoration: none !important;
  margin-top: 8px;
}
.timer-neutral {
  background: rgba(255,255,255,0.15);
  color: #e8f0f7;
  border: 1px solid rgba(255,255,255,0.3);
}
.timer-active {
  background: var(--accent);
  color: #2D3748;
  border: 1px solid rgba(0,0,0,0.1);
  box-shadow: 0 2px 8px rgba(255,179,71,0.45);
  animation: pulse-timer 2s ease-in-out infinite;
}
.timer-over {
  background: #e53e3e;
  color: #fff;
  border: 1px solid rgba(0,0,0,0.15);
}
@keyframes pulse-timer {
  0%,100% { box-shadow: 0 2px 8px rgba(255,179,71,0.45); }
  50%      { box-shadow: 0 2px 16px rgba(255,179,71,0.80); }
}
/* keep header nav li vertically centered */
.main-header .navbar .navbar-nav > li > .timer-display {
  margin-top: 10px;
}


/* ── 14. Admin panel ──────────────────────────────────────────── */
.btn-admin {
  background: var(--secondary) !important;
  border: none !important;
  color: #fff !important;
  border-radius: 8px !important;
  font-weight: 600 !important;
  padding: 6px 16px !important;
  font-size: 0.875rem !important;
  transition: background 0.18s, box-shadow 0.18s;
}
.btn-admin:hover {
  background: var(--secondary-dk) !important;
  box-shadow: 0 2px 8px rgba(0,151,167,0.4) !important;
}
.btn-admin.btn-admin-apply {
  background: #38A169 !important;
}
.btn-admin.btn-admin-apply:hover {
  background: #276749 !important;
}
.btn-admin.btn-danger {
  background: #e53e3e !important;
}
.btn-admin.btn-danger:hover {
  background: #c53030 !important;
}
/* admin answers verbatim output */
#admin_answers_content {
  background: #1e293b;
  color: #a5f3fc;
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 0.82rem;
  min-height: 80px;
  max-height: 340px;
  overflow-y: auto;
  white-space: pre;
  font-family: 'Courier New', monospace;
}


/* ── 15. Responsive ───────────────────────────────────────────── */
@media (max-width: 992px) {
  .center-div {
    margin: 1rem;
    padding: 1.75rem 1.5rem;
  }
  .center-div .form-group,
  .center-div .shiny-input-container {
    width: 85% !important;
  }
}
@media (max-width: 576px) {
  html { font-size: 15px; }
  .center-div {
    padding: 1.25rem 0.75rem;
    border-radius: var(--radius-sm);
    margin: 0.5rem;
  }
  .center-div .form-group,
  .center-div .shiny-input-container {
    width: 95% !important;
  }
  .btn.starry-night-button,
  .btn.red-button {
    padding: 0.72rem 2rem !important;
  }
}