/* ============================================
   ZEN LUXURY BREATHING APP - PREMIUM DESIGN
   ============================================ */

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  background: linear-gradient(135deg, var(--color-gradient-1) 0%, var(--color-bg-primary) 50%, var(--color-gradient-2) 100%);
  background-attachment: fixed;
  color: var(--color-text-primary);
  min-height: 100vh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

/* Ambient Background Effect */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(107, 127, 248, 0.08) 0%, transparent 50%),
              radial-gradient(circle at 70% 50%, rgba(124, 212, 172, 0.05) 0%, transparent 50%);
  animation: ambient-drift 20s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes ambient-drift {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-5%, 5%) scale(1.05); }
}

/* App Container */
.app-container {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  min-height: 100vh;
  padding: var(--space-md) var(--space-lg);
  position: relative;
  z-index: 1;
}

/* ============================================
   STATS HEADER - GLASSMORPHISM
   ============================================ */

.stats-header {
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: 0;
  width: 100%;
  max-width: 480px;
  background: var(--color-bg-card);
  backdrop-filter: blur(var(--blur-glass));
  -webkit-backdrop-filter: blur(var(--blur-glass));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.stat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  min-width: 0; /* Prevent flex overflow */
  padding: var(--space-xs) var(--space-sm);
}

.stat-value {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  white-space: nowrap; /* Prevent wrapping */
  font-family: var(--font-display);
  font-size: var(--font-size-3xl);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.streak-count {
  color: var(--color-success);
}

.today-count,
.goal-count {
  color: var(--color-text-primary);
}

.stat-separator {
  color: var(--color-text-tertiary);
  font-size: var(--font-size-xl);
  margin: 0 0.1rem;
}

.stat-label {
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 400;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  white-space: nowrap; /* Prevent wrapping */
}

.stat-divider {
  width: 1px;
  background: linear-gradient(to bottom,
    transparent 0%,
    rgba(255, 255, 255, 0.12) 20%,
    rgba(255, 255, 255, 0.12) 80%,
    transparent 100%);
  align-self: stretch;
  margin: 0 var(--space-xs);
}

/* ============================================
   BREATHING CONTAINER
   ============================================ */

.breathing-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: var(--space-lg);
  padding: var(--space-xl) 0;
  position: relative;
}

/* Circle Wrapper - Contains SVG Progress Ring and Circle */
.circle-wrapper {
  position: relative;
  width: 340px;
  height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ============================================
   PROGRESS RING (SVG)
   ============================================ */

.progress-ring {
  position: absolute;
  top: 0;
  left: 0;
  transform: rotate(-90deg); /* Start from top */
  filter: drop-shadow(0 0 8px rgba(107, 127, 248, 0.3));
}

.progress-ring-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.05);
  stroke-width: 2;
}

.progress-ring-circle {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 1036.73; /* Exact: 2 * PI * 165 */
  stroke-dashoffset: 1036.73;
  transition: stroke-dashoffset var(--duration-fast) linear;
  filter: drop-shadow(0 0 4px var(--color-accent-glow));
}

/* ============================================
   BREATHING CIRCLE
   ============================================ */

.breathing-circle {
  position: relative;
  width: var(--circle-size);
  height: var(--circle-size);
  border-radius: var(--radius-full);
  background: radial-gradient(circle at 40% 40%,
    rgba(107, 127, 248, 0.25) 0%,
    rgba(107, 127, 248, 0.15) 50%,
    rgba(107, 127, 248, 0.05) 100%);
  border: 1px solid rgba(107, 127, 248, 0.2);
  box-shadow:
    0 0 60px rgba(107, 127, 248, 0.2),
    inset 0 0 60px rgba(107, 127, 248, 0.1);
  will-change: transform;
  transition: box-shadow var(--duration-transition) ease;

  /* Center the text inside */
  display: flex;
  align-items: center;
  justify-content: center;
}

.breathing-circle.active {
  box-shadow:
    0 0 80px rgba(107, 127, 248, 0.4),
    inset 0 0 80px rgba(107, 127, 248, 0.2);
}

/* ============================================
   BREATH INSTRUCTION TEXT (INSIDE CIRCLE)
   ============================================ */

.breath-instruction {
  font-family: var(--font-body);
  font-size: var(--font-size-2xl);
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--color-text-primary);
  opacity: 0;
  transition: opacity var(--duration-transition) ease,
              font-size var(--duration-breath) ease;
  text-align: center;
  pointer-events: none;
  text-shadow: 0 0 20px rgba(107, 127, 248, 0.5);
}

.breath-instruction.active {
  opacity: 1;
}

/* Scale text with circle */
.breathing-circle.inhale .breath-instruction {
  font-size: var(--font-size-4xl);
}

.breathing-circle.exhale .breath-instruction {
  font-size: var(--font-size-xl);
}

/* ============================================
   BREATH COUNT
   ============================================ */

.breath-count {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: 300;
  color: var(--color-text-secondary);
  letter-spacing: 0.02em;
  margin-top: 0;
}

/* ============================================
   CONTROLS
   ============================================ */

.controls {
  display: flex;
  gap: var(--space-md);
  width: 100%;
  max-width: 480px;
}

/* Buttons */
.btn {
  flex: 1;
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-transition) ease;
  min-height: 56px;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s ease;
}

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

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, rgba(107, 127, 248, 0.8) 100%);
  color: var(--color-text-primary);
  box-shadow:
    0 4px 20px rgba(107, 127, 248, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-primary:hover {
  box-shadow:
    0 6px 30px rgba(107, 127, 248, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--color-bg-card);
  backdrop-filter: blur(var(--blur-glass));
  color: var(--color-text-secondary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-soft);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text-primary);
  transform: translateY(-2px);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablet and Medium Screens */
@media (max-width: 768px) {
  .app-container {
    padding: var(--space-md) var(--space-md);
  }

  .stats-header {
    max-width: 90%;
  }

  .circle-wrapper {
    width: min(340px, 80vw);
    height: min(340px, 80vw);
  }

  .progress-ring {
    width: min(340px, 80vw);
    height: min(340px, 80vw);
  }

  .breathing-circle {
    width: min(var(--circle-size), 65vw);
    height: min(var(--circle-size), 65vw);
  }

  .controls {
    max-width: 90%;
  }
}

/* Mobile Devices */
@media (max-width: 480px) {
  .app-container {
    padding: var(--space-md);
  }

  .stats-header {
    max-width: 100%;
    padding: var(--space-sm) var(--space-md);
  }

  .stat-value {
    font-size: var(--font-size-2xl);
  }

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

  .circle-wrapper {
    width: 300px;
    height: 300px;
  }

  .progress-ring {
    width: 300px;
    height: 300px;
  }

  .progress-ring-bg,
  .progress-ring-circle {
    cx: 150;
    cy: 150;
    r: 145;
  }

  .breathing-circle {
    width: 240px;
    height: 240px;
  }

  .breath-instruction {
    font-size: var(--font-size-lg);
  }

  .breathing-circle.inhale .breath-instruction {
    font-size: var(--font-size-3xl);
  }

  .breathing-circle.exhale .breath-instruction {
    font-size: var(--font-size-base);
  }

  .breath-count {
    font-size: var(--font-size-lg);
  }

  .controls {
    max-width: 100%;
    gap: var(--space-sm);
  }

  .btn {
    font-size: var(--font-size-sm);
    padding: var(--space-sm) var(--space-md);
  }
}

@media (max-width: 360px) {
  .stat-value {
    font-size: var(--font-size-xl);
  }

  .stat-divider {
    margin: 0 var(--space-xs);
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  body::before {
    animation: none;
  }
}

/* Focus States */
.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

/* Loading State */
.loading {
  opacity: 0.5;
  pointer-events: none;
}