/* ============================================
   Flow Design System v2.0 — Liquid Glass
   typsilon shared component library
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* --- Tokens --- */
:root {
  /* Backgrounds — warm light base */
  --flow-bg:        #f5f3f0;
  --flow-s1:        rgba(255,255,255,0.55);
  --flow-s2:        rgba(255,255,255,0.35);
  --flow-s3:        rgba(255,255,255,0.65);
  --flow-s4:        rgba(0,0,0,0.03);

  /* Glass */
  --flow-glass:     rgba(255,255,255,0.45);
  --flow-glass-h:   rgba(255,255,255,0.60);
  --flow-glass-blur: 24px;
  --flow-glass-sat:  180%;
  --flow-glass-border: rgba(255,255,255,0.65);
  --flow-glass-shadow: 0 2px 16px rgba(0,0,0,0.06), 0 0 1px rgba(0,0,0,0.08);
  --flow-glass-inner: inset 0 1px 0 rgba(255,255,255,0.7);

  /* Borders */
  --flow-border:    rgba(0,0,0,0.06);
  --flow-border-h:  rgba(0,0,0,0.10);
  --flow-border-f:  rgba(0,0,0,0.14);

  /* Text — muted, warm tones */
  --flow-t1:        #1a1a1a;
  --flow-t2:        #5c5a57;
  --flow-t3:        #8a8885;
  --flow-t4:        #b0aeab;

  /* Accent — muted indigo-blue */
  --flow-accent:    #6b7ae8;
  --flow-accent-h:  #5a68d6;
  --flow-accent-bg: rgba(107,122,232,0.10);
  --flow-accent-glow: rgba(107,122,232,0.12);

  /* Semantic — muted, pastel-ish */
  --flow-success:    #4aba8a;
  --flow-success-bg: rgba(74,186,138,0.10);
  --flow-warning:    #d4963a;
  --flow-warning-bg: rgba(212,150,58,0.10);
  --flow-danger:     #d45c5c;
  --flow-danger-bg:  rgba(212,92,92,0.10);
  --flow-info:       #5aa8d4;
  --flow-info-bg:    rgba(90,168,212,0.10);

  /* Radii — softer, rounder */
  --flow-r-sm: 8px;
  --flow-r:    12px;
  --flow-r-md: 16px;
  --flow-r-lg: 22px;
  --flow-r-full: 9999px;

  /* Shadows */
  --flow-shadow-sm: 0 1px 4px rgba(0,0,0,0.05);
  --flow-shadow:    0 4px 20px rgba(0,0,0,0.06), 0 0 1px rgba(0,0,0,0.08);
  --flow-shadow-lg: 0 8px 40px rgba(0,0,0,0.08), 0 0 1px rgba(0,0,0,0.1);

  /* Timing */
  --flow-ease: cubic-bezier(0.2, 0, 0, 1);
  --flow-dur:  0.2s;

  /* Safe areas */
  --flow-safe-t: env(safe-area-inset-top, 0px);
  --flow-safe-b: env(safe-area-inset-bottom, 0px);
}

/* --- Reset --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--flow-bg);
  color: var(--flow-t1);
  min-height: 100vh;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  font-size: 14px;
}

/* --- Ambient gradient background --- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(107,122,232,0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(212,150,58,0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 0%, rgba(90,168,212,0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* --- Glass mixin via utility class --- */
.flow-glass {
  background: var(--flow-glass);
  backdrop-filter: blur(var(--flow-glass-blur)) saturate(var(--flow-glass-sat));
  -webkit-backdrop-filter: blur(var(--flow-glass-blur)) saturate(var(--flow-glass-sat));
  border: 1px solid var(--flow-glass-border);
  box-shadow: var(--flow-glass-shadow), var(--flow-glass-inner);
}

/* ============ LAYOUT ============ */

.flow-app {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
}

/* Header / navbar — liquid glass */
.flow-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.50);
  backdrop-filter: blur(28px) saturate(var(--flow-glass-sat));
  -webkit-backdrop-filter: blur(28px) saturate(var(--flow-glass-sat));
  border-bottom: 1px solid rgba(255,255,255,0.6);
  box-shadow: 0 1px 12px rgba(0,0,0,0.04), inset 0 -1px 0 rgba(0,0,0,0.03);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.flow-header-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--flow-t1);
}

.flow-header-icon {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--flow-accent), var(--flow-accent-h));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  box-shadow: 0 2px 8px rgba(107,122,232,0.25);
  flex-shrink: 0;
}

.flow-header-title {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.flow-header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.flow-header-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.flow-header-nav a {
  color: var(--flow-t3);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 500;
  transition: color var(--flow-dur);
}

.flow-header-nav a:hover { color: var(--flow-t2); }
.flow-header-nav a.active { color: var(--flow-accent); }

.flow-content {
  flex: 1;
  padding: 1rem;
  padding-bottom: calc(1rem + var(--flow-safe-b));
}

@media (min-width: 768px) {
  .flow-header { padding: 0.85rem 2rem; }
  .flow-content { padding: 1.5rem 2rem; }
}

/* ============ BUTTONS ============ */

.flow-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 500;
  line-height: 1;
  padding: 0.5rem 0.85rem;
  border-radius: var(--flow-r);
  border: 1px solid rgba(0,0,0,0.06);
  background: rgba(255,255,255,0.55);
  backdrop-filter: blur(12px) saturate(150%);
  -webkit-backdrop-filter: blur(12px) saturate(150%);
  color: var(--flow-t2);
  cursor: pointer;
  transition: all var(--flow-dur) var(--flow-ease);
  white-space: nowrap;
  text-decoration: none;
  box-shadow: 0 1px 4px rgba(0,0,0,0.04), inset 0 1px 0 rgba(255,255,255,0.6);
}

.flow-btn:hover {
  background: rgba(255,255,255,0.70);
  color: var(--flow-t1);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06), inset 0 1px 0 rgba(255,255,255,0.7);
}

.flow-btn:active { transform: translateY(0); }

.flow-btn-primary {
  background: var(--flow-accent);
  border-color: transparent;
  color: #fff;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow: 0 2px 8px rgba(107,122,232,0.25);
}
.flow-btn-primary:hover { background: var(--flow-accent-h); color: #fff; box-shadow: 0 4px 12px rgba(107,122,232,0.3); }

.flow-btn-ghost {
  background: transparent;
  border-color: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow: none;
}
.flow-btn-ghost:hover { background: rgba(0,0,0,0.04); box-shadow: none; }

.flow-btn-danger {
  background: var(--flow-danger-bg);
  border-color: transparent;
  color: var(--flow-danger);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow: none;
}
.flow-btn-danger:hover { background: rgba(212,92,92,0.18); }

.flow-btn-sm { padding: 0.35rem 0.6rem; font-size: 0.72rem; border-radius: var(--flow-r-sm); }
.flow-btn-lg { padding: 0.65rem 1.2rem; font-size: 0.85rem; }
.flow-btn-icon { padding: 0.45rem; min-width: unset; }

/* ============ CARDS — Liquid Glass ============ */

.flow-card {
  background: var(--flow-glass);
  backdrop-filter: blur(var(--flow-glass-blur)) saturate(var(--flow-glass-sat));
  -webkit-backdrop-filter: blur(var(--flow-glass-blur)) saturate(var(--flow-glass-sat));
  border: 1px solid var(--flow-glass-border);
  border-radius: var(--flow-r-md);
  padding: 1rem;
  box-shadow: var(--flow-glass-shadow), var(--flow-glass-inner);
  transition: all var(--flow-dur) var(--flow-ease);
}

.flow-card:hover {
  background: var(--flow-glass-h);
  box-shadow: var(--flow-shadow), var(--flow-glass-inner);
}

.flow-card-interactive {
  cursor: pointer;
}

.flow-card-interactive:hover {
  transform: translateY(-2px);
}

.flow-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.6rem;
}

.flow-card-title {
  font-size: 0.88rem;
  font-weight: 600;
}

.flow-card-body {
  font-size: 0.82rem;
  color: var(--flow-t2);
  line-height: 1.5;
}

.flow-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.6rem;
  padding-top: 0.6rem;
  border-top: 1px solid rgba(0,0,0,0.05);
}

/* ============ FORMS ============ */

.flow-input {
  width: 100%;
  background: rgba(255,255,255,0.50);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: var(--flow-r);
  padding: 0.55rem 0.8rem;
  color: var(--flow-t1);
  font-family: inherit;
  font-size: 0.82rem;
  outline: none;
  transition: all var(--flow-dur);
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.03);
}

.flow-input::placeholder { color: var(--flow-t4); }
.flow-input:focus {
  border-color: var(--flow-accent);
  box-shadow: 0 0 0 3px var(--flow-accent-glow), inset 0 1px 2px rgba(0,0,0,0.03);
  background: rgba(255,255,255,0.65);
}

.flow-select {
  background: rgba(255,255,255,0.50);
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: var(--flow-r);
  padding: 0.5rem 0.7rem;
  color: var(--flow-t2);
  font-family: inherit;
  font-size: 0.78rem;
  outline: none;
  cursor: pointer;
  transition: border-color var(--flow-dur);
}

.flow-select:focus { border-color: var(--flow-accent); }

.flow-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--flow-t2);
  margin-bottom: 0.3rem;
}

.flow-field { margin-bottom: 0.8rem; }

/* ============ CHIPS / BADGES ============ */

.flow-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.25rem 0.6rem;
  border-radius: var(--flow-r-full);
  background: rgba(255,255,255,0.50);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.6);
  color: var(--flow-t3);
  white-space: nowrap;
  transition: all var(--flow-dur);
  cursor: default;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.flow-chip-interactive { cursor: pointer; }
.flow-chip-interactive:hover {
  background: rgba(255,255,255,0.70);
  color: var(--flow-t2);
}
.flow-chip-active {
  background: var(--flow-accent);
  border-color: var(--flow-accent);
  color: #fff;
  box-shadow: 0 2px 6px rgba(107,122,232,0.2);
}

.flow-badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.68rem;
  font-weight: 500;
  padding: 0.15rem 0.5rem;
  border-radius: var(--flow-r-full);
  background: rgba(0,0,0,0.04);
  color: var(--flow-t3);
}

.flow-badge-accent  { background: var(--flow-accent-bg); color: var(--flow-accent); }
.flow-badge-success { background: var(--flow-success-bg); color: var(--flow-success); }
.flow-badge-warning { background: var(--flow-warning-bg); color: var(--flow-warning); }
.flow-badge-danger  { background: var(--flow-danger-bg);  color: var(--flow-danger); }

/* ============ AVATAR ============ */

.flow-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--flow-accent), var(--flow-accent-h));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  color: #fff;
  font-weight: 600;
  flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(107,122,232,0.2);
}

.flow-avatar-sm { width: 18px; height: 18px; font-size: 0.5rem; }
.flow-avatar-lg { width: 32px; height: 32px; font-size: 0.75rem; }

/* ============ MODAL — Liquid Glass ============ */

.flow-modal-bg {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 200;
  align-items: flex-end;
  justify-content: center;
}

.flow-modal-bg.open { display: flex; }

.flow-modal {
  background: rgba(255,255,255,0.70);
  backdrop-filter: blur(32px) saturate(200%);
  -webkit-backdrop-filter: blur(32px) saturate(200%);
  border: 1px solid rgba(255,255,255,0.75);
  border-radius: var(--flow-r-lg) var(--flow-r-lg) 0 0;
  width: 100%;
  max-width: 440px;
  padding: 1.5rem;
  box-shadow: 0 -4px 40px rgba(0,0,0,0.08), inset 0 1px 0 rgba(255,255,255,0.8);
  animation: flow-slideUp 0.25s var(--flow-ease);
}

.flow-modal-title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.flow-modal-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  margin-top: 1rem;
}

@media (min-width: 768px) {
  .flow-modal-bg { align-items: center; }
  .flow-modal { border-radius: var(--flow-r-lg); margin-bottom: 10vh; }
}

/* ============ STATS BAR ============ */

.flow-stats {
  display: flex;
  gap: 0.4rem;
  overflow-x: auto;
  scrollbar-width: none;
  padding: 0.5rem 0;
}

.flow-stats::-webkit-scrollbar { display: none; }

.flow-stat {
  font-size: 0.68rem;
  color: var(--flow-t3);
  font-weight: 500;
  white-space: nowrap;
  padding: 0.25rem 0.6rem;
  background: rgba(255,255,255,0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.5);
  border-radius: var(--flow-r-full);
  flex-shrink: 0;
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}

.flow-stat strong { color: var(--flow-t2); }

/* ============ STATUS DOTS ============ */

.flow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.flow-dot-warning { background: var(--flow-warning); box-shadow: 0 0 8px rgba(212,150,58,0.3); }
.flow-dot-accent  { background: var(--flow-accent);  box-shadow: 0 0 8px rgba(107,122,232,0.3); }
.flow-dot-success { background: var(--flow-success); box-shadow: 0 0 8px rgba(74,186,138,0.3); }
.flow-dot-danger  { background: var(--flow-danger);  box-shadow: 0 0 8px rgba(212,92,92,0.3); }

/* ============ EMPTY STATE ============ */

.flow-empty {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--flow-t3);
  font-size: 0.82rem;
}

.flow-empty-icon {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  opacity: 0.5;
}

/* ============ SCROLLBAR ============ */

.flow-scroll {
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(0,0,0,0.1) transparent;
}

.flow-scroll::-webkit-scrollbar { width: 4px; }
.flow-scroll::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.1); border-radius: 4px; }

/* ============ UTILITIES ============ */

.flow-flex { display: flex; }
.flow-flex-col { flex-direction: column; }
.flow-items-center { align-items: center; }
.flow-justify-between { justify-content: space-between; }
.flow-gap-xs { gap: 0.25rem; }
.flow-gap-sm { gap: 0.5rem; }
.flow-gap { gap: 0.75rem; }
.flow-gap-lg { gap: 1rem; }
.flow-wrap { flex-wrap: wrap; }
.flow-shrink-0 { flex-shrink: 0; }
.flow-grow { flex: 1; }
.flow-text-sm { font-size: 0.78rem; }
.flow-text-xs { font-size: 0.68rem; }
.flow-text-muted { color: var(--flow-t3); }
.flow-text-secondary { color: var(--flow-t2); }
.flow-font-medium { font-weight: 500; }
.flow-font-semibold { font-weight: 600; }
.flow-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.flow-hidden { display: none !important; }
.flow-sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ============ ANIMATIONS ============ */

@keyframes flow-slideIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes flow-slideUp {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}

@keyframes flow-fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes flow-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.4; }
}

.flow-animate-in { animation: flow-slideIn 0.2s var(--flow-ease); }
.flow-animate-fade { animation: flow-fadeIn 0.3s ease; }
.flow-animate-pulse { animation: flow-pulse 2s infinite; }

/* ============ ICONS — simple 2D, monochrome ============ */

.flow-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1em;
  height: 1em;
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}