/* ============================================================
   Google Fonts — Outfit (headings) + JetBrains Mono (time)
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ============================================================
   Design Tokens
   ============================================================ */
:root {
  /* Palette */
  --color-bg:          #080d1a;
  --color-bg-alt:      #0d1526;
  --color-surface:     rgba(15, 28, 58, 0.75);
  --color-surface-alt: rgba(22, 40, 78, 0.6);
  --color-border:      rgba(99, 132, 210, 0.18);
  --color-border-hover:rgba(99, 132, 210, 0.55);
  --color-accent:      #6c8ef5;
  --color-accent-dim:  #3d5fc7;
  --color-accent-glow: rgba(108, 142, 245, 0.28);
  --color-text:        #dde4f5;
  --color-subtext:     #7d8fbb;
  --color-time-fg:     #e8eeff;
  --color-time-pill:   rgba(108, 142, 245, 0.12);
  --color-time-border: rgba(108, 142, 245, 0.22);

  /* Typography */
  --font-ui:   'Outfit', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Mono', 'Cascadia Code', monospace;

  /* Spacing */
  --header-pad-top: 3.5rem;
  --grid-gap:       1.75rem;
  --card-pad:       2rem;

  /* Radii */
  --radius-card:   1.1rem;
  --radius-inner:  0.65rem;
  --radius-select: 0.55rem;

  /* Transitions */
  --t-fast: 0.18s ease;
  --t-std:  0.22s ease;
}

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

/* ============================================================
   Page / Body
   ============================================================ */
html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  /* Radial glow in the center for depth */
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(61, 95, 199, 0.18) 0%, transparent 70%);
  background-attachment: fixed;
  color: var(--color-text);
  font-family: var(--font-ui);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ============================================================
   Header
   ============================================================ */
header {
  width: 100%;
  text-align: center;
  padding: var(--header-pad-top) 1.5rem 2.25rem;
  position: relative;
}

/* Thin accent underline beneath the header */
header::after {
  content: '';
  display: block;
  width: 4rem;
  height: 3px;
  margin: 1.25rem auto 0;
  border-radius: 9999px;
  background: linear-gradient(90deg, var(--color-accent-dim), var(--color-accent), var(--color-accent-dim));
}

header h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  /* Gradient text */
  background: linear-gradient(135deg, #a5b8ff 0%, #6c8ef5 45%, #8db5ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.15;
}

/* ============================================================
   Cards Grid
   ============================================================ */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--grid-gap);
  padding: 3rem 2rem 4rem;
  width: 100%;
  max-width: 1200px;
}

/* ============================================================
   Clock Card — glassmorphism surface
   ============================================================ */
.clock-card {
  background: var(--color-surface);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: var(--card-pad);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.2rem;
  box-shadow:
    0 2px 8px rgba(0, 0, 0, 0.35),
    0 8px 32px rgba(0, 0, 0, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  transition:
    transform var(--t-std),
    box-shadow var(--t-std),
    border-color var(--t-std);
  cursor: default;
}

.clock-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-border-hover);
  box-shadow:
    0 4px 12px rgba(0, 0, 0, 0.4),
    0 16px 48px rgba(0, 0, 0, 0.55),
    0 0 0 1px var(--color-border-hover),
    0 0 28px var(--color-accent-glow),
    inset 0 1px 0 rgba(255, 255, 255, 0.09);
}

/* ============================================================
   City Label
   ============================================================ */
.clock-card__label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-subtext);
  align-self: flex-start;
}

/* ============================================================
   City Select (Dropdown)
   ============================================================ */
.clock-card__select {
  width: 100%;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-color: var(--color-bg-alt);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-select);
  padding: 0.6rem 2.6rem 0.6rem 0.9rem;
  font-size: 0.92rem;
  font-family: var(--font-ui);
  font-weight: 400;
  cursor: pointer;
  outline: none;
  /* SVG chevron caret — matches accent color */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236c8ef5' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.7rem center;
  background-size: 1rem;
  transition:
    border-color var(--t-fast),
    box-shadow var(--t-fast),
    background-color var(--t-fast);
}

.clock-card__select:hover {
  border-color: rgba(108, 142, 245, 0.4);
  background-color: #111c35;
}

.clock-card__select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

/* Best-effort option styling (OS-controlled) */
.clock-card__select option {
  background-color: #0d1526;
  color: var(--color-text);
}

/* ============================================================
   Analog Clock Canvas
   ============================================================ */
.clock-card__analog {
  display: block;
  /* actual dimensions are set by JS (HiDPI-aware); CSS size is a fallback */
  width:  190px;
  height: 190px;
  border-radius: 50%;
  /* subtle outer glow matching the accent palette */
  box-shadow:
    0 0 0 2px rgba(108, 142, 245, 0.18),
    0 4px 24px rgba(0, 0, 0, 0.5),
    0 0 32px rgba(108, 142, 245, 0.1);
  flex-shrink: 0;
}

/* ============================================================
   Color-row — face-color label + picker
   ============================================================ */
.clock-card__color-group {
  display: flex;
  flex-direction: column;
  width: 100%;
  gap: 0.4rem;
}

.clock-card__color-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 0.75rem;
  padding: 0.35rem 0.5rem;
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-inner);
}

.clock-card__color-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-subtext);
  user-select: none;
  white-space: nowrap;
}

.clock-card__color-input {
  -webkit-appearance: none;
  appearance: none;
  width:  2rem;
  height: 2rem;
  border: 1px solid var(--color-border);
  border-radius: 0.45rem;
  background: none;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}

.clock-card__color-input:hover {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.clock-card__color-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

/* Swatch-wrapper padding removal (Chromium) */
.clock-card__color-input::-webkit-color-swatch-wrapper {
  padding: 2px;
}

.clock-card__color-input::-webkit-color-swatch {
  border: none;
  border-radius: 0.3rem;
}

/* Firefox swatch */
.clock-card__color-input::-moz-color-swatch {
  border: none;
  border-radius: 0.3rem;
}

/* ============================================================
   Time Display — pill badge with gradient bg
   ============================================================ */
.clock-card__time {
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 2.2vw, 1.7rem);
  font-weight: 500;
  letter-spacing: 0.07em;
  color: var(--color-time-fg);
  text-align: center;
  line-height: 1;
  /* Prevent layout jump while JS populates the first value */
  min-height: 5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  align-items: center;
  justify-content: center;
  width: 100%;
  /* Pill / badge look */
  background: linear-gradient(
    135deg,
    rgba(61, 95, 199, 0.22) 0%,
    var(--color-time-pill) 60%,
    rgba(108, 142, 245, 0.08) 100%
  );
  border: 1px solid var(--color-time-border);
  border-radius: 9999px;
  padding: 0.8rem 1.25rem;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 2px 12px rgba(0, 0, 0, 0.3);
  transition: color var(--t-fast);
}

/* Subtle brightening of the pill on card hover */
.clock-card:hover .clock-card__time {
  border-color: rgba(108, 142, 245, 0.38);
  background: linear-gradient(
    135deg,
    rgba(61, 95, 199, 0.3) 0%,
    rgba(108, 142, 245, 0.18) 60%,
    rgba(108, 142, 245, 0.1) 100%
  );
}

/* ============================================================
   Time spans — stacked layout inside the pill
   ============================================================ */
.clock-card__time .time-hms {
  font-size: inherit;
  white-space: nowrap;
  font-weight: 600;
  letter-spacing: 0.07em;
}

.clock-card__time .time-date {
  font-size: 0.72rem;
  font-family: var(--font-ui);
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-subtext);
}

/* ============================================================
   Responsive — two columns on tablet
   ============================================================ */
@media (min-width: 601px) and (max-width: 899px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    padding: 2.5rem 1.5rem 3rem;
  }
}

/* ============================================================
   Responsive — single column on mobile
   ============================================================ */
@media (max-width: 600px) {
  :root {
    --header-pad-top: 2.5rem;
    --card-pad: 1.5rem;
    --grid-gap: 1.25rem;
  }

  header h1 {
    font-size: 1.75rem;
    letter-spacing: 0.04em;
  }

  .cards-grid {
    grid-template-columns: 1fr;
    gap: var(--grid-gap);
    padding: 2rem 1rem 3rem;
  }

  .clock-card__time {
    font-size: 1.9rem;
    min-height: 3.4rem;
  }
}

/* ============================================================
   Wide viewport — constrain max card width for readability
   ============================================================ */
@media (min-width: 1400px) {
  .cards-grid {
    max-width: 1320px;
    padding: 3.5rem 2.5rem 5rem;
  }
}

/* ============================================================
   Accessibility — respect reduced-motion preference
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}