:root {
  --bg-color: #1A1C1E;
  --surface-color: #25282D;
  --accent-color: #BDC7DC;
  --text-color: #FFFFFF;
  --text-muted: rgba(255, 255, 255, 0.4);
  --font-main: 'Google Sans', 'Inter', -apple-system, sans-serif;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --border-color: rgba(255, 255, 255, 0.1);
  --success-color: #388E3C;
  --danger-color: #D32F2F;
  --warning-color: #FBC02D;
  
  --fs-h1: 24px;
  --fs-h2: 20px;
  --fs-main: 15px;
  --fs-small: 13px;
  --fs-label: 12px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-color);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.5;
  overflow-x: hidden;
}

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

.fadeIn {
  animation: fadeInPage 0.6s var(--ease-out) forwards;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
  background: var(--surface-color);
  border-radius: 4px;
  border: 1px solid var(--border-color);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-color);
}

/* Generic Inputs */
.input-field {
  width: 100%;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 14px 18px;
  color: var(--text-color);
  font-family: var(--font-main);
  font-size: var(--fs-main);
  outline: none;
  transition: border-color 0.3s var(--ease-out), background-color 0.3s;
}

.input-field:focus {
  border-color: var(--accent-color);
  background-color: rgba(255, 255, 255, 0.06);
}

/* Primary Pill Buttons */
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  padding: 16px 28px;
  background: var(--accent-color);
  color: var(--bg-color);
  border: 1px solid var(--accent-color);
  border-radius: 100px;
  font-weight: 700;
  font-family: var(--font-main);
  font-size: var(--fs-label);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: background-color 0.3s var(--ease-out), color 0.3s var(--ease-out), border-color 0.3s var(--ease-out), opacity 0.2s;
}

.button:hover:not(:disabled) {
  background-color: transparent;
  color: var(--accent-color);
}

.button:active:not(:disabled) {
  opacity: 0.8;
}

.button:disabled {
  background-color: #383b40;
  border-color: #383b40;
  color: var(--text-muted);
  cursor: not-allowed;
}

.button-secondary {
  background: transparent;
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.button-secondary:hover:not(:disabled) {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.button-danger {
  background: var(--danger-color);
  border-color: var(--danger-color);
  color: #fff;
}

.button-danger:hover:not(:disabled) {
  background: transparent;
  color: var(--danger-color);
}

/* Modals Overlay & Box */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 24px;
  backdrop-filter: blur(5px);
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 28px;
  width: 100%;
  max-width: 480px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  animation: modalIn 0.4s var(--ease-out) forwards;
  max-height: 90vh;
  overflow-y: auto;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-title {
  font-size: var(--fs-h2);
  font-weight: 500;
  margin-bottom: 16px;
  text-align: left;
}

.modal-buttons {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 24px;
}

/* Global Loading Spinner overlay */
.loader-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease-out);
}

.loader-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.md-spinner {
  width: 48px;
  height: 48px;
  animation: rotate 2s linear infinite;
}

.md-spinner .path {
  stroke: var(--accent-color);
  stroke-width: 4;
  stroke-linecap: round;
  fill: none;
  animation: dash 1.5s ease-in-out infinite;
}

@keyframes rotate {
  100% {
    transform: rotate(360deg);
  }
}

@keyframes dash {
  0% {
    stroke-dasharray: 1, 150;
    stroke-dashoffset: 0;
  }
  50% {
    stroke-dasharray: 90, 150;
    stroke-dashoffset: -35;
  }
  100% {
    stroke-dasharray: 90, 150;
    stroke-dashoffset: -124;
  }
}

/* Header Utilities */
.header-clock-section {
  display: flex;
  align-items: center;
  gap: 16px;
}

.realtime-clock {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent-color);
  letter-spacing: 0.5px;
  font-family: monospace;
}

.fullscreen-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
  border-radius: 8px;
  transition: background-color 0.2s, color 0.2s;
}

.fullscreen-btn:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--accent-color);
}

.fullscreen-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}