/* ==========================================================================
   NumberPuzzle - Cyber Neon Emerald Style Sheet
   ========================================================================== */

/* Design Tokens & Theme Variables */
:root {
  --bg-dark: #050907;
  --bg-darker: #020403;
  
  /* Cyber Emerald Theme Palette */
  --neon-emerald: #39ff14; /* Cyber Neon Green */
  --neon-cobalt: #00f0ff;  /* Neon Cyan */
  --neon-yellow: #ffff00;  /* Pure Neon Yellow */
  --neon-gold: #ffaa00;    /* Victory Gold */
  --neon-purple: #9400d3;  /* Background accent purple */
  
  /* Text and Accents */
  --text-main: #f0faf4;
  --text-muted: #7f9588;
  --accent-emerald: rgba(57, 255, 20, 0.15);
  --accent-cobalt: rgba(0, 240, 255, 0.15);
  
  /* Glassmorphism */
  --glass-bg: rgba(6, 12, 9, 0.75);
  --glass-border: rgba(57, 255, 20, 0.08);
  --glass-border-hover: rgba(0, 240, 255, 0.3);
  
  /* Layout */
  --viewport-size: 800px;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  user-select: none;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

/* Retro Futuristic Matrix Grid & Glow Orbs */
.grid-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(57, 255, 20, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 20, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  background-position: center center;
  z-index: 1;
  pointer-events: none;
}

.grid-background::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, transparent 20%, var(--bg-dark) 85%);
  pointer-events: none;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.12;
  z-index: 1;
  pointer-events: none;
  animation: float-orbs 25s infinite alternate ease-in-out;
}

.orb-emerald {
  width: 600px;
  height: 600px;
  background-color: var(--neon-emerald);
  top: 5%;
  left: -10%;
}

.orb-cobalt {
  width: 700px;
  height: 700px;
  background-color: var(--neon-cobalt);
  bottom: 5%;
  right: -10%;
  animation-delay: -7s;
}

/* Animations */
@keyframes float-orbs {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(100px, -60px) scale(1.15); }
}

@keyframes pulse-emerald {
  0% { box-shadow: 0 0 15px rgba(57, 255, 20, 0.15); }
  100% { box-shadow: 0 0 35px rgba(57, 255, 20, 0.35); }
}

@keyframes blink {
  0%, 100% { opacity: 0.2; }
  50% { opacity: 1; }
}

.animate-fade-in {
  animation: fadeIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-zoom-in {
  animation: zoomIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes zoomIn {
  from { opacity: 0; transform: scale(0.9) translate(-50%, -45%); }
  to { opacity: 1; transform: scale(1) translate(-50%, -50%); }
}

/* Glassmorphism Preset */
.glassmorphism {
  background: var(--glass-bg);
  backdrop-filter: blur(12px) saturate(160%);
  -webkit-backdrop-filter: blur(12px) saturate(160%);
  border: 1px solid var(--glass-border);
  box-shadow: 0 10px 40px 0 rgba(1, 3, 2, 0.7);
}

/* Main Container Layout */
.app-container {
  position: relative;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 900px;
  padding: 20px;
}

.app-header {
  text-align: center;
  margin-bottom: 25px;
}

.logo {
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  font-size: 2.8rem;
  letter-spacing: 4px;
  color: var(--text-main);
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
  margin-bottom: 5px;
}

.logo span.neon-emerald {
  color: var(--neon-emerald);
  text-shadow: 0 0 10px var(--neon-emerald), 0 0 20px rgba(57, 255, 20, 0.4);
}

.tagline {
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--text-muted);
}

/* Game Wrapper */
.game-wrapper {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
}

/* Top Panel Dashboard */
.control-panel {
  width: var(--viewport-size);
  padding: 15px 35px;
  border-radius: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.control-panel::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 10%;
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-emerald), transparent);
}

.stat-box {
  display: flex;
  flex-direction: column;
}

.stat-label {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 2px;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.stat-value {
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 1.8rem;
  line-height: 1.2;
}

/* Neon Dynamic Colors */
.neon-yellow {
  color: var(--neon-yellow);
  text-shadow: 0 0 10px rgba(255, 255, 0, 0.5);
}

.neon-emerald {
  color: var(--neon-emerald);
  text-shadow: 0 0 10px rgba(57, 255, 20, 0.5);
}

/* Buttons System */
.btn {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 2px;
  padding: 12px 26px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  outline: none;
  display: inline-flex;
  justify-content: center;
  align-items: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--neon-emerald), var(--neon-cobalt));
  color: var(--bg-darker);
  font-weight: 900;
  font-size: 1.05rem;
  box-shadow: 0 0 15px rgba(57, 255, 20, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 25px rgba(57, 255, 20, 0.5), 0 0 10px rgba(0, 240, 255, 0.3);
  color: #fff;
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-secondary {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--glass-border);
  box-shadow: inset 0 0 5px rgba(255, 255, 255, 0.05);
}

.btn-secondary:hover {
  background: rgba(57, 255, 20, 0.05);
  border-color: var(--neon-emerald);
  box-shadow: 0 0 15px rgba(57, 255, 20, 0.25);
  transform: translateY(-2px);
}

.btn-accent {
  background: linear-gradient(135deg, var(--neon-emerald), #00b300);
  color: var(--bg-darker);
  font-weight: 900;
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.5);
}

.glow-btn-gold {
  background: linear-gradient(135deg, var(--neon-gold), #cc8800) !important;
  color: var(--bg-darker) !important;
}

.glow-btn-gold:hover {
  box-shadow: 0 0 20px rgba(255, 170, 0, 0.6) !important;
}

/* 800x800 Viewport Board */
.board-boundary {
  width: var(--viewport-size);
  height: var(--viewport-size);
  background: #030604;
  border: 2px solid rgba(57, 255, 20, 0.15);
  border-radius: 24px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 0 30px rgba(57, 255, 20, 0.1), inset 0 0 45px rgba(0, 0, 0, 0.95);
  transition: border-color 0.4s ease, box-shadow 0.4s ease;
}

.board-boundary.active {
  border-color: var(--neon-emerald);
  animation: pulse-emerald 2s infinite alternate ease-in-out;
}

/* Board Background Grid Texture */
.board-boundary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(57, 255, 20, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 20, 0.015) 1px, transparent 1px);
  background-size: 20px 20px;
  pointer-events: none;
  z-index: 2;
}

/* Interactive Puzzle Tiles */
.puzzle-tile {
  position: absolute;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: 'Orbitron', sans-serif;
  font-weight: 800;
  cursor: pointer;
  z-index: 10;
  background: rgba(8, 20, 14, 0.8);
  border: 1px solid rgba(57, 255, 20, 0.2);
  border-radius: 12px;
  box-shadow: 
    inset 0 0 15px rgba(57, 255, 20, 0.08),
    0 4px 15px rgba(0, 0, 0, 0.5);
  color: var(--text-main);
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.2);
  transition: 
    transform 0.2s cubic-bezier(0.25, 1, 0.5, 1),
    border-color 0.2s ease,
    background-color 0.2s ease,
    box-shadow 0.2s ease,
    font-size 0.3s ease; /* Fluid dynamic slide and rescale */
}

/* Hover Glowing feedback */
.puzzle-tile:hover:not(.blank) {
  background: rgba(12, 35, 22, 0.85);
  border-color: var(--neon-cobalt);
  box-shadow: 
    inset 0 0 20px rgba(0, 240, 255, 0.15),
    0 0 15px rgba(0, 240, 255, 0.3);
  text-shadow: 0 0 8px var(--neon-cobalt);
  z-index: 12; /* Float above other tiles during interaction */
}

/* Dynamic tile click active feedback */
.puzzle-tile:active:not(.blank) {
  transform: scale(0.95);
}

/* Empty tile slot layout */
.puzzle-tile.blank {
  background: transparent !important;
  border: 1px dashed rgba(57, 255, 20, 0.05) !important;
  box-shadow: none !important;
  pointer-events: none;
  z-index: 1;
}

/* Welcome Overlay */
.board-overlay-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 25;
  background: rgba(3, 5, 4, 0.88);
  transition: opacity 0.4s ease;
}

.overlay-card {
  max-width: 500px;
  padding: 40px;
  border-radius: 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 20px;
  border-color: rgba(57, 255, 20, 0.1);
}

.overlay-card h3 {
  font-family: 'Orbitron', sans-serif;
  letter-spacing: 2px;
  color: var(--neon-emerald);
  font-size: 1.5rem;
  text-shadow: 0 0 10px rgba(57, 255, 20, 0.3);
}

.overlay-card p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.blink-text {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--neon-yellow);
  animation: blink 1.5s infinite;
  font-size: 0.9rem;
}

/* Bottom Footer Area */
.footer-panel {
  width: var(--viewport-size);
  display: flex;
  justify-content: center;
  margin-top: 5px;
}

.footer-panel button {
  width: 280px;
}

/* ==========================================================================
   Modals & Glassmorphic Popups
   ========================================================================== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 100;
  display: none;
  justify-content: center;
  align-items: center;
}

.modal.active {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(2, 4, 3, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.modal-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  max-width: 480px;
  padding: 40px;
  border-radius: 24px;
  z-index: 110;
  border-color: rgba(57, 255, 20, 0.12);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.9);
  overflow: hidden;
}

.modal-glow {
  position: absolute;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 300px;
  pointer-events: none;
}

.glow-emerald {
  background: radial-gradient(circle, rgba(57, 255, 20, 0.18) 0%, transparent 70%);
}

.glow-gold {
  background: radial-gradient(circle, rgba(255, 170, 0, 0.18) 0%, transparent 70%);
}

.modal-title {
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  font-size: 2.2rem;
  letter-spacing: 3px;
  text-align: center;
  margin-bottom: 25px;
}

.neon-emerald-text {
  color: var(--neon-emerald);
  text-shadow: 0 0 10px rgba(57, 255, 20, 0.4);
}

.neon-gold-text {
  color: var(--neon-gold);
  text-shadow: 0 0 12px rgba(255, 170, 0, 0.4);
}

.congrats-tag {
  font-size: 0.9rem;
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 20px;
  letter-spacing: 0.5px;
  line-height: 1.5;
}

.clear-stats {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: rgba(57, 255, 20, 0.02);
  border: 1px solid rgba(57, 255, 20, 0.05);
  padding: 20px;
  border-radius: 12px;
  margin-bottom: 25px;
}

.clear-label {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  letter-spacing: 2px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 5px;
}

.clear-value {
  font-family: 'Orbitron', sans-serif;
  font-weight: 900;
  font-size: 2.6rem;
}

.neon-yellow-text {
  color: var(--neon-yellow);
  text-shadow: 0 0 12px rgba(255, 255, 0, 0.5);
}

.modal-action-row {
  display: flex;
  justify-content: center;
}

.modal-action-row button {
  width: 100%;
  max-width: 240px;
}

/* User Initials Form */
.input-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.input-label {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  letter-spacing: 1.5px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.input-row {
  display: flex;
  gap: 10px;
  width: 100%;
}

.input-row input {
  flex: 1;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(57, 255, 20, 0.15);
  border-radius: 8px;
  color: #fff;
  font-family: 'Poppins', sans-serif;
  font-size: 0.95rem;
  padding: 12px 16px;
  outline: none;
  transition: all 0.3s ease;
}

.input-row input:focus {
  border-color: var(--neon-emerald);
  box-shadow: 0 0 10px rgba(57, 255, 20, 0.2);
}

.input-row button {
  white-space: nowrap;
}

.status-message {
  font-size: 0.8rem;
  text-align: center;
  height: 20px;
}

.status-message.success {
  color: var(--neon-emerald);
}

.status-message.error {
  color: #ff007f;
  text-shadow: 0 0 5px rgba(255, 0, 127, 0.2);
}

/* Leaderboard Modal Overrides */
.rankings-content {
  max-width: 620px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.modal-header .modal-title {
  margin-bottom: 0;
  font-size: 1.8rem;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 2.2rem;
  cursor: pointer;
  transition: color 0.3s ease;
  line-height: 1;
}

.close-btn:hover {
  color: #ff007f;
  text-shadow: 0 0 8px #ff007f;
}

/* Table styles */
.leaderboard-wrapper {
  max-height: 450px;
  overflow-y: auto;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(57, 255, 20, 0.05);
}

/* custom scrollbar */
.leaderboard-wrapper::-webkit-scrollbar {
  width: 8px;
}

.leaderboard-wrapper::-webkit-scrollbar-track {
  background: transparent;
}

.leaderboard-wrapper::-webkit-scrollbar-thumb {
  background: rgba(57, 255, 20, 0.08);
  border-radius: 4px;
}

.leaderboard-wrapper::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 240, 255, 0.3);
}

.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.leaderboard-table th {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 2px;
  color: var(--text-muted);
  padding: 14px 20px;
  border-bottom: 1px solid rgba(57, 255, 20, 0.1);
  position: sticky;
  top: 0;
  background: #09120c;
  z-index: 10;
}

.leaderboard-table td {
  padding: 12px 20px;
  font-size: 0.9rem;
  color: var(--text-main);
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.leaderboard-table tbody tr {
  transition: background-color 0.2s ease;
}

.leaderboard-table tbody tr:hover {
  background-color: rgba(57, 255, 20, 0.03);
}

/* Top 3 rank Highlights */
.leaderboard-table tbody tr:nth-child(1) td:nth-child(1) {
  color: var(--neon-gold);
  font-weight: 900;
  text-shadow: 0 0 8px rgba(255, 170, 0, 0.5);
}

.leaderboard-table tbody tr:nth-child(2) td:nth-child(1) {
  color: #e0e0f0;
  font-weight: 700;
}

.leaderboard-table tbody tr:nth-child(3) td:nth-child(1) {
  color: #cd7f32;
  font-weight: 700;
}

.leaderboard-table tbody tr:nth-child(1) {
  background-color: rgba(255, 170, 0, 0.02);
}

.no-data {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 40px;
  text-align: center;
  gap: 15px;
}

.no-data.hidden {
  display: none !important;
}

.cyber-icon {
  font-family: 'Orbitron', sans-serif;
  font-size: 2rem;
  font-weight: 900;
  color: var(--neon-cobalt);
  text-shadow: 0 0 10px var(--neon-cobalt);
  border: 2px solid var(--neon-cobalt);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.no-data p {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 1.5px;
  color: var(--text-muted);
}

/* Main Horizontal Layout Wrapper */
.main-layout-wrapper {
  display: flex;
  flex-direction: row;
  gap: 30px;
  align-items: flex-start;
  justify-content: center;
  width: 100%;
}

/* Right Side Ad Panel Alignment */
.ad-side-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 800px; /* Perfectly aligned to the 800px game board height */
}

/* Go to Hub Navigation Button */
.home-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 140px;
  padding: 12px 16px;
  margin-bottom: 20px; /* Elegant gap above dynamic ad container */
  border-radius: 12px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 1px;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  text-align: center;
  line-height: 1.2;
}

.home-btn:hover {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.35);
  transform: translateY(-3px);
  color: var(--neon-cyan);
}

.home-btn:active {
  transform: translateY(1px);
}

.home-icon {
  font-size: 1.05rem;
}

/* Coupang Partners Ad Banner Container (140x680 Vertical) */
.ad-banner-container {
  width: 140px;
  height: 680px;
  border-radius: 16px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  border: 1px solid rgba(57, 255, 20, 0.1);
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.05), 0 8px 30px rgba(0, 0, 0, 0.7);
  background: rgba(3, 7, 5, 0.6);
  position: relative;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.ad-banner-container:hover {
  border-color: var(--neon-cobalt);
  box-shadow: 0 0 25px rgba(0, 240, 255, 0.15), 0 8px 30px rgba(0, 0, 0, 0.8);
}

/* Ensure dynamic iframe sits cleanly inside */
.ad-banner-container iframe {
  display: block;
  border: none !important;
  border-radius: 12px;
  max-height: 100%;
}