:root {
  /* Analog Dark Theme (Default) */
  --bg-color: #121212;
  --bg-gradient: #222222;
  --board-bg: #1e1e1e;
  --board-border: #333333;
  --board-shadow: #000;
  
  --flap-bg: #161616;
  --flap-border: #0a0a0a;
  --flap-hinge: #000;
  
  --text-color: #e8e8e8;
  --input-bg: #262626;
  --input-border: #3a3a3a;
  --btn-bg: #2c2c2c;
  --btn-hover: #404040;
  --btn-active: #1f1f1f;
  
  --glow-color: rgba(255, 255, 255, 0.05);
  --modal-overlay: rgba(0, 0, 0, 0.75);
  --modal-bg: #222222;
}

body[data-theme="blue"] {
  --bg-color: #151e2b;
  --bg-gradient: #223042;
  --board-bg: #2a3b4c;
  --board-border: #3d5066;
  
  --flap-bg: #1c2a38;
  --flap-border: #121b24;
  --flap-hinge: #0a0e14;

  --text-color: #dbe4ef;
  --input-bg: #1f2c3d;
  --input-border: #324559;
  --btn-bg: #2e4157;
  --btn-hover: #445d7a;
  --btn-active: #202e3f;
  
  --glow-color: rgba(150, 180, 220, 0.1);
  --modal-bg: #223042;
}

body[data-theme="green"] {
  --bg-color: #171c15;
  --bg-gradient: #242c20;
  --board-bg: #2c3e2e;
  --board-border: #405743;
  
  --flap-bg: #1e2b20;
  --flap-border: #131c14;
  --flap-hinge: #0a0f0a;

  --text-color: #dce5dc;
  --input-bg: #202d22;
  --input-border: #334535;
  --btn-bg: #304533;
  --btn-hover: #47664c;
  --btn-active: #223024;
  
  --glow-color: rgba(160, 200, 160, 0.1);
  --modal-bg: #242c20;
}

body[data-theme="red"] {
  --bg-color: #211212;
  --bg-gradient: #361b1b;
  --board-bg: #4a2525;
  --board-border: #633333;
  
  --flap-bg: #331a1a;
  --flap-border: #211111;
  --flap-hinge: #120909;

  --text-color: #ebd9d9;
  --input-bg: #361c1c;
  --input-border: #4f2828;
  --btn-bg: #4f2626;
  --btn-hover: #753838;
  --btn-active: #381a1a;
  
  --glow-color: rgba(220, 120, 120, 0.1);
  --modal-bg: #361b1b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-color);
  background-image: radial-gradient(circle at center, var(--bg-gradient) 0%, var(--bg-color) 100%);
  color: var(--text-color);
  font-family: 'Oswald', sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  overflow: hidden;
  transition: all 0.3s ease;
}

.display-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  padding: 2rem;
  width: 100%;
  max-width: 90vw;
}

.board-frame {
  background-color: var(--board-bg);
  padding: 2rem;
  border-radius: 16px;
  border: 4px solid var(--board-border);
  box-shadow: 
    0 30px 60px rgba(0,0,0,0.9),
    inset 0 2px 10px rgba(255,255,255,0.05),
    inset 0 -2px 10px rgba(0,0,0,0.5);
  position: relative;
  transition: all 0.3s ease;
}

/* Add some mechanical details to the board */
.board-frame::before, .board-frame::after {
  content: '';
  position: absolute;
  top: 15px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #333;
  box-shadow: inset 0 2px 3px rgba(0,0,0,0.8), 0 1px 1px rgba(255,255,255,0.1);
}

.board-frame::before { left: 15px; }
.board-frame::after { right: 15px; }

.board {
  display: flex;
  gap: 6px;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 100%;
}

.controls {
  width: 100%;
  max-width: 600px;
}

.input-group {
  display: flex;
  gap: 0.5rem;
  background: var(--input-bg);
  border: 2px solid var(--input-border);
  border-radius: 8px;
  padding: 0.5rem;
  box-shadow: 0 10px 20px rgba(0,0,0,0.5);
  align-items: center;
}

input[type="text"], input[type="number"], input[type="datetime-local"] {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-color);
  padding: 0.5rem 1rem;
  font-size: 1.5rem;
  font-family: 'Oswald', sans-serif;
  text-transform: uppercase;
  outline: none;
  letter-spacing: 2px;
}

input[type="number"], input[type="datetime-local"] {
  background: var(--bg-color);
  border: 1px solid var(--input-border);
  border-radius: 4px;
  font-size: 1.2rem;
  letter-spacing: 1px;
}

input::placeholder {
  color: #555;
}

button {
  background: var(--btn-bg);
  color: var(--text-color);
  border: 1px solid #444;
  padding: 0.5rem 1.5rem;
  font-size: 1.2rem;
  font-family: 'Oswald', sans-serif;
  cursor: pointer;
  border-radius: 4px;
  text-transform: uppercase;
  font-weight: 600;
  transition: all 0.2s ease;
  box-shadow: 0 4px 6px rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
}

button:hover {
  background: var(--btn-hover);
  box-shadow: 0 6px 12px rgba(0,0,0,0.4), 0 0 10px var(--glow-color);
  transform: translateY(-1px);
}

button:active {
  background: var(--btn-active);
  transform: translateY(1px);
  box-shadow: 0 2px 4px rgba(0,0,0,0.4);
}

.icon-btn {
  padding: 0.5rem;
  width: 48px;
  height: 48px;
  border-radius: 50%;
}

.full-btn {
  width: 100%;
  margin-top: 1.5rem;
  padding: 1rem;
}

/* Modal Styles */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--modal-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(5px);
  opacity: 1;
  transition: opacity 0.3s ease;
}

.modal.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal-content {
  background-color: var(--modal-bg);
  padding: 2rem;
  border-radius: 12px;
  border: 2px solid var(--input-border);
  box-shadow: 0 20px 40px rgba(0,0,0,0.8);
  width: 90%;
  max-width: 450px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--input-border);
  padding-bottom: 1rem;
}

.modal-header h2 {
  margin: 0;
  font-size: 1.8rem;
  letter-spacing: 2px;
}

.close-btn {
  background: transparent;
  border: none;
  box-shadow: none;
  font-size: 2rem;
  padding: 0;
  line-height: 1;
  width: auto;
  height: auto;
  color: #888;
}

.close-btn:hover {
  color: var(--text-color);
  background: transparent;
  box-shadow: none;
  transform: none;
}

.setting-item {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.setting-item label {
  font-size: 1.2rem;
  letter-spacing: 1px;
  color: #bbb;
}

.theme-options {
  display: flex;
  gap: 1rem;
}

.theme-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid transparent;
  padding: 0;
  transition: transform 0.2s;
}

.theme-btn:hover {
  transform: scale(1.1);
}

.theme-btn.active {
  border-color: #fff;
  box-shadow: 0 0 10px rgba(255,255,255,0.5);
}

.schedule-list-wrapper {
  margin-top: 2rem;
  border-top: 1px solid var(--input-border);
  padding-top: 1.5rem;
}

.schedule-list-wrapper h3 {
  margin-top: 0;
  letter-spacing: 1px;
}

.schedule-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.schedule-item {
  background: var(--input-bg);
  padding: 1rem;
  border-radius: 8px;
  border: 1px solid var(--input-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.schedule-item .time {
  font-size: 0.9rem;
  color: #888;
}

.schedule-item .msg {
  font-size: 1.2rem;
  letter-spacing: 1px;
}

.delete-schedule {
  background: #501515;
  color: white;
  border: none;
  border-radius: 4px;
  padding: 0.25rem 0.5rem;
  font-size: 0.9rem;
}

.no-schedule {
  color: #666;
  font-style: italic;
  text-align: center;
  padding: 1rem 0;
}

@container (max-width: 600px) {
  .board {
    gap: 2px;
  }
}