@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;700&family=Orbitron:wght@500;700;900&family=Share+Tech+Mono&display=swap");

:root {
  --bg-main: #0a0e10;
  --bg-panel: #11181c;
  --bg-panel-header: #172127;
  --bg-input: #080c0e;
  --color-primary: #00ff66;
  --color-primary-rgb: 0, 255, 102;
  --color-amber: #ffaa00;
  --color-amber-rgb: 255, 170, 0;
  --color-blue: #00e5ff;
  --color-blue-rgb: 0, 229, 255;
  --text-main: #e2e8f0;
  --text-muted: #8492a6;
  --border-color: #202d36;
  --border-active: #00ff66;
  --glow-primary: 0 0 15px rgba(0, 255, 102, 0.45);
  --glow-amber: 0 0 15px rgba(255, 170, 0, 0.45);
  --glow-blue: 0 0 15px rgba(0, 229, 255, 0.45);
  --font-hud: "Share Tech Mono", monospace;
  --font-digital: "Orbitron", sans-serif;
  --font-base: "Noto Sans KR", sans-serif;
}

/* Light / Tan Theme Option */
body.theme-tan {
  --bg-main: #181714;
  --bg-panel: #24221d;
  --bg-panel-header: #2e2b25;
  --bg-input: #12110f;
  --color-primary: #ffaa00;
  --color-primary-rgb: 255, 170, 0;
  --color-amber: #ff5500;
  --color-amber-rgb: 255, 85, 0;
  --color-blue: #ebd29b;
  --color-blue-rgb: 235, 210, 155;
  --text-main: #f5f2eb;
  --text-muted: #a09787;
  --border-color: #3b372f;
  --border-active: #ffaa00;
  --glow-primary: 0 0 15px rgba(255, 170, 0, 0.45);
  --glow-amber: 0 0 15px rgba(255, 85, 0, 0.45);
  --font-hud: "Share Tech Mono", monospace;
  --font-digital: "Orbitron", sans-serif;
  --font-base: "Noto Sans KR", sans-serif;
}

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

body {
  font-family: var(--font-base);
  background-color: var(--bg-main);
  color: var(--text-main);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  padding: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

/* Scanline and HUD grid effect */
body::before {
  content: " ";
  display: block;
  position: fixed;
  top: 0; left: 0; bottom: 0; right: 0;
  background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
  background-size: 100% 4px, 6px 100%;
  z-index: 1000;
  pointer-events: none;
  opacity: 0.45;
}

body::after {
  content: " ";
  display: block;
  position: fixed;
  top: 0; left: 0; bottom: 0; right: 0;
  background: radial-gradient(circle, transparent 60%, rgba(0,0,0,0.6) 100%);
  z-index: 1001;
  pointer-events: none;
}

.hud-wrapper {
  max-width: 600px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 20px;
  z-index: 10;
  margin-bottom: 40px;
}

/* Header */
.hud-header {
  border: 1px solid var(--border-color);
  background-color: var(--bg-panel);
  padding: 15px 20px;
  border-radius: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hud-header::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  box-shadow: var(--glow-primary);
}

.hud-title-area {
  display: flex;
  flex-direction: column;
}

.hud-title {
  font-family: var(--font-digital);
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--color-primary);
  text-shadow: var(--glow-primary);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.hud-subtitle {
  font-family: var(--font-hud);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 1.5px;
}

.hud-status-node {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 6px 12px;
  border-radius: 4px;
}

.status-dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-primary);
  border-radius: 50%;
  box-shadow: var(--glow-primary);
  animation: pulse 2s infinite;
}

.status-text {
  font-family: var(--font-hud);
  font-size: 0.75rem;
  color: var(--color-primary);
  font-weight: bold;
}

/* Tactical Panel/Card */
.hud-panel {
  border: 1px solid var(--border-color);
  background-color: var(--bg-panel);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.hud-panel.active {
  border-color: var(--color-primary);
  box-shadow: 0 0 10px rgba(var(--color-primary-rgb), 0.15);
}

.panel-header {
  background-color: var(--bg-panel-header);
  border-bottom: 1px solid var(--border-color);
  padding: 10px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.panel-title {
  font-family: var(--font-hud);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 1px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-title-icon {
  width: 8px;
  height: 8px;
  border-left: 2px solid var(--color-primary);
  border-bottom: 2px solid var(--color-primary);
  transform: rotate(-45deg);
}

.panel-desc {
  font-family: var(--font-hud);
  font-size: 0.7rem;
  color: var(--text-muted);
}

.panel-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

/* Forms and Inputs */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

label {
  font-family: var(--font-hud);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 5px;
}

.input-container {
  position: relative;
  width: 100%;
}

input[type="date"],
input[type="number"],
input[type="text"],
select {
  width: 100%;
  padding: 12px 14px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-main);
  font-size: 0.95rem;
  font-family: var(--font-base);
  transition: all 0.2s ease;
  appearance: none;
}

input[type="date"]::-webkit-calendar-picker-indicator {
  filter: invert(1) sepia(1) saturate(5) hue-rotate(90deg); /* Style date picker for dark mode */
  cursor: pointer;
  opacity: 0.6;
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 8px rgba(var(--color-primary-rgb), 0.25);
  background-color: #0c1318;
}

/* Custom styling for select tag */
select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2300ff66'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 16px;
  padding-right: 40px;
}

/* Grid adjustments */
.hidden {
  display: none !important;
}

/* Pulse / Status Glow Animations */
@keyframes pulse {
  0% {
    transform: scale(0.9);
    opacity: 0.6;
    box-shadow: 0 0 0 0 rgba(var(--color-primary-rgb), 0.7);
  }
  70% {
    transform: scale(1);
    opacity: 1;
    box-shadow: 0 0 0 8px rgba(var(--color-primary-rgb), 0);
  }
  100% {
    transform: scale(0.9);
    opacity: 0.6;
    box-shadow: 0 0 0 0 rgba(var(--color-primary-rgb), 0);
  }
}

/* Buttons */
.btn-tactical {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  font-family: var(--font-hud);
  font-weight: 700;
  font-size: 1rem;
  padding: 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 2px;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 0 5px rgba(var(--color-primary-rgb), 0.1);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
}

.btn-tactical::before {
  content: "";
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(var(--color-primary-rgb), 0.15), transparent);
  transition: all 0.5s ease;
}

.btn-tactical:hover {
  background-color: rgba(var(--color-primary-rgb), 0.1);
  box-shadow: var(--glow-primary), inset 0 0 10px rgba(var(--color-primary-rgb), 0.2);
  text-shadow: var(--glow-primary);
  border-color: var(--color-primary);
}

.btn-tactical:hover::before {
  left: 100%;
}

.btn-tactical:active {
  transform: scale(0.98);
  background-color: rgba(var(--color-primary-rgb), 0.2);
}

/* Main Display / Output Section */
.countdown-header-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.d-day-big {
  font-family: var(--font-digital);
  font-size: 4rem;
  font-weight: 900;
  color: var(--color-primary);
  text-shadow: var(--glow-primary);
  line-height: 1.1;
}

.countdown-percentage {
  font-family: var(--font-digital);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-blue);
  text-shadow: var(--glow-blue);
}

/* Live Time Telemetry */
.time-telemetry {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 12px;
  border-radius: 6px;
}

.telemetry-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.telemetry-cell:not(:last-child)::after {
  content: ":";
  position: absolute;
  right: -6px;
  top: 15%;
  font-family: var(--font-digital);
  color: var(--border-color);
  font-size: 1.5rem;
}

.telemetry-value {
  font-family: var(--font-digital);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--color-primary);
  text-shadow: var(--glow-primary);
}

.telemetry-label {
  font-family: var(--font-hud);
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: 2px;
}

.millisecond-container {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 10px;
  font-family: var(--font-digital);
  font-size: 1rem;
  color: var(--color-blue);
  letter-spacing: 1px;
}

.millisecond-container span {
  font-weight: bold;
}

/* Sleek HUD Progress Bar */
.hud-progress-wrapper {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-hud);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.progress-track {
  height: 18px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, rgba(var(--color-primary-rgb), 0.6) 0%, var(--color-primary) 100%);
  box-shadow: 0 0 10px rgba(var(--color-primary-rgb), 0.5);
  border-radius: 2px;
  transition: width 0.1s linear;
  position: relative;
}

/* Diagonal stripes on the progress bar */
.progress-fill::after {
  content: "";
  position: absolute;
  top: 0; left: 0; bottom: 0; right: 0;
  background-image: linear-gradient(
    -45deg,
    rgba(255, 255, 255, 0.15) 25%,
    transparent 25%,
    transparent 50%,
    rgba(255, 255, 255, 0.15) 50%,
    rgba(255, 255, 255, 0.15) 75%,
    transparent 75%,
    transparent
  );
  background-size: 16px 16px;
  animation: progress-stripes 2s linear infinite;
}

@keyframes progress-stripes {
  from { background-position: 0 0; }
  to { background-position: 32px 0; }
}

/* Info Grid (Served Days, Discharge, etc.) */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.stat-box {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 12px;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-box-title {
  font-family: var(--font-hud);
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.stat-box-value {
  font-family: var(--font-digital);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
}

.stat-box-value.highlight {
  color: var(--color-primary);
  text-shadow: 0 0 5px rgba(var(--color-primary-rgb), 0.3);
}

/* Promotion Tracker */
.promotion-track-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.rank-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.rank-badge-display {
  display: flex;
  align-items: center;
  gap: 10px;
}

.rank-badge {
  background-color: var(--color-primary);
  color: var(--bg-main);
  font-family: var(--font-hud);
  font-weight: 900;
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 4px;
  box-shadow: var(--glow-primary);
  letter-spacing: 0.5px;
}

.rank-title {
  font-family: var(--font-base);
  font-size: 0.95rem;
  font-weight: 700;
}

.next-rank-info {
  font-family: var(--font-hud);
  font-size: 0.75rem;
  color: var(--color-amber);
  text-shadow: var(--glow-amber);
}

/* Rank Milestones Line */
.rank-milestones {
  display: flex;
  justify-content: space-between;
  position: relative;
  padding: 25px 0 10px 0;
  margin-top: 10px;
}

.rank-milestones::before {
  content: "";
  position: absolute;
  top: 29px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--border-color);
  z-index: 1;
}

.milestone-fill {
  position: absolute;
  top: 29px;
  left: 0;
  height: 2px;
  background-color: var(--color-primary);
  box-shadow: var(--glow-primary);
  z-index: 2;
  transition: width 0.5s ease;
}

.milestone-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 3;
  width: 50px;
}

.node-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--bg-panel);
  border: 2px solid var(--border-color);
  margin-bottom: 8px;
  transition: all 0.3s ease;
}

.milestone-node.completed .node-dot {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  box-shadow: var(--glow-primary);
}

.milestone-node.active .node-dot {
  border-color: var(--color-primary);
  background-color: var(--bg-main);
  box-shadow: var(--glow-primary);
  transform: scale(1.3);
  animation: pulse-dot 1.5s infinite;
}

@keyframes pulse-dot {
  0% { box-shadow: 0 0 0 0 rgba(var(--color-primary-rgb), 0.7); }
  70% { box-shadow: 0 0 0 6px rgba(var(--color-primary-rgb), 0); }
  100% { box-shadow: 0 0 0 0 rgba(var(--color-primary-rgb), 0); }
}

.node-label {
  font-family: var(--font-base);
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
  font-weight: 500;
}

.milestone-node.completed .node-label,
.milestone-node.active .node-label {
  color: var(--text-main);
  font-weight: 700;
}

.node-date {
  position: absolute;
  top: -20px;
  font-family: var(--font-hud);
  font-size: 0.6rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.milestone-node.active .node-date {
  color: var(--color-primary);
}

/* Vacation Tracker Area */
.vacation-collapsible {
  border-top: 1px solid var(--border-color);
  margin-top: 10px;
  padding-top: 15px;
}

.vacation-toggle {
  font-family: var(--font-hud);
  font-size: 0.75rem;
  color: var(--color-blue);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  user-select: none;
}

.vacation-toggle::before {
  content: "▶";
  font-size: 0.65rem;
  transition: transform 0.2s ease;
}

.vacation-toggle.open::before {
  transform: rotate(90deg);
}

.vacation-drawer {
  display: none;
  flex-direction: column;
  gap: 15px;
  margin-top: 15px;
  animation: slideDown 0.25s ease-out;
}

.vacation-drawer.open {
  display: flex;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.vacation-countdown-card {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  padding: 15px;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.vacation-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.vacation-name {
  font-family: var(--font-base);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-blue);
  text-shadow: var(--glow-blue);
}

.vacation-dday {
  font-family: var(--font-digital);
  font-size: 1.4rem;
  color: var(--color-blue);
  text-shadow: var(--glow-blue);
  font-weight: bold;
}

.vacation-countdown-text {
  font-family: var(--font-hud);
  font-size: 0.75rem;
  color: var(--text-main);
  text-align: center;
  padding: 6px;
  background-color: rgba(var(--color-blue-rgb), 0.05);
  border: 1px dashed rgba(var(--color-blue-rgb), 0.3);
  border-radius: 4px;
}

/* Fun Section (Meals / Payday) */
.hud-fun-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.fun-stat-box {
  background-color: var(--bg-input);
  border: 1px dashed var(--border-color);
  padding: 12px;
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 8px;
}

.fun-label {
  font-family: var(--font-hud);
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.fun-desc {
  font-family: var(--font-base);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: -4px;
}

.fun-value {
  font-family: var(--font-digital);
  font-size: 1.15rem;
  color: var(--color-amber);
  text-shadow: var(--glow-amber);
  font-weight: bold;
}

/* System Details/Footer */
.hud-footer {
  text-align: center;
  font-family: var(--font-hud);
  font-size: 0.7rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 10px 0 20px 0;
}

.hud-footer-line {
  height: 1px;
  background-color: var(--border-color);
  width: 100%;
}

.hud-credits a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: bold;
  transition: all 0.2s ease;
}

.hud-credits a:hover {
  text-shadow: var(--glow-primary);
  text-decoration: underline;
}

/* Theme Switcher Button */
.theme-switch-btn {
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  color: var(--color-primary);
  padding: 6px 12px;
  font-family: var(--font-hud);
  font-size: 0.7rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: bold;
}

.theme-switch-btn:hover {
  border-color: var(--color-primary);
  box-shadow: var(--glow-primary);
  color: var(--bg-main);
  background-color: var(--color-primary);
}

/* Reset / Recalculate panel button */
.btn-reset {
  background-color: transparent;
  border: 1px solid var(--color-amber);
  color: var(--color-amber);
  font-family: var(--font-hud);
  font-size: 0.75rem;
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  align-self: flex-end;
}

.btn-reset:hover {
  background-color: rgba(var(--color-amber-rgb), 0.1);
  box-shadow: var(--glow-amber);
  text-shadow: var(--glow-amber);
}

/* Media Queries for Mobile Responsiveness */
@media (max-width: 480px) {
  body {
    padding: 10px;
  }

  .hud-wrapper {
    gap: 15px;
  }

  .hud-header {
    padding: 12px 15px;
  }

  .hud-title {
    font-size: 1.25rem;
  }

  .panel-body {
    padding: 15px;
  }

  .d-day-big {
    font-size: 3.2rem;
  }

  .time-telemetry {
    padding: 8px;
  }

  .telemetry-value {
    font-size: 1.4rem;
  }

  .telemetry-cell:not(:last-child)::after {
    font-size: 1.2rem;
    right: -5px;
  }

  .stat-grid {
    grid-template-columns: 1fr;
  }

  .hud-fun-stats {
    grid-template-columns: 1fr;
  }

  .node-label {
    font-size: 0.65rem;
  }

  .node-date {
    font-size: 0.55rem;
  }
}