/* Sky parked at the top of the page, grass and mountains at the end. */

@property --sky-top { syntax: "<color>"; inherits: true; initial-value: #4ea6e6; }
@property --sky-mid { syntax: "<color>"; inherits: true; initial-value: #8ecff2; }
@property --sky-bottom { syntax: "<color>"; inherits: true; initial-value: #d4eef8; }
@property --cloud { syntax: "<color>"; inherits: true; initial-value: #ffffff; }
@property --grass { syntax: "<color>"; inherits: true; initial-value: #62c84a; }
@property --grass-deep { syntax: "<color>"; inherits: true; initial-value: #3da832; }
@property --ridge { syntax: "<color>"; inherits: true; initial-value: #7eafd0; }
@property --ridge-far { syntax: "<color>"; inherits: true; initial-value: #b9d7ea; }
@property --ridge-near { syntax: "<color>"; inherits: true; initial-value: #5d86a6; }
@property --snow { syntax: "<color>"; inherits: true; initial-value: #f7fbff; }
@property --sun-opacity { syntax: "<number>"; inherits: true; initial-value: 1; }
@property --moon-opacity { syntax: "<number>"; inherits: true; initial-value: 0; }
@property --star-opacity { syntax: "<number>"; inherits: true; initial-value: 0; }
@property --rain-opacity { syntax: "<number>"; inherits: true; initial-value: 0; }

html {
  --sky-top: #4ea6e6;
  --sky-mid: #8ecff2;
  --sky-bottom: #d4eef8;
  --cloud: rgba(255, 255, 255, 0.92);
  --sun-opacity: 1;
  --rain-opacity: 0;
  --grass: #62c84a;
  --grass-deep: #3da832;
  --ridge: #7eafd0;
  --ridge-far: #b9d7ea;
  --ridge-near: #5d86a6;
  --snow: #f7fbff;
  --moon-opacity: 0;
  --star-opacity: 0;
  transition:
    --sky-top 0.9s ease,
    --sky-mid 0.9s ease,
    --sky-bottom 0.9s ease,
    --cloud 0.9s ease,
    --grass 0.9s ease,
    --grass-deep 0.9s ease,
    --ridge 0.9s ease,
    --ridge-far 0.9s ease,
    --ridge-near 0.9s ease,
    --snow 0.9s ease,
    --text 0.9s ease,
    --text-2 0.9s ease,
    --text-3 0.9s ease,
    --sun-opacity 0.7s ease,
    --moon-opacity 0.7s ease,
    --star-opacity 0.7s ease,
    --rain-opacity 0.7s ease;
}

html[data-weather="cloudy"] {
  --sky-top: #6f9dbe;
  --sky-mid: #a7c6d8;
  --sky-bottom: #d7e6ee;
  --cloud: rgba(255, 255, 255, 0.97);
  --sun-opacity: 0;
  --grass: #5cbf48;
  --grass-deep: #3a9e32;
  --ridge: #8aafc6;
  --ridge-far: #c5dbe8;
  --ridge-near: #6d93ad;
  --snow: #f4f8fb;
}

html[data-weather="rain"] {
  --sky-top: #4f738c;
  --sky-mid: #7f9eb3;
  --sky-bottom: #c5d5e0;
  --cloud: rgba(236, 243, 247, 0.95);
  --sun-opacity: 0;
  --rain-opacity: 1;
  --grass: #4ea83c;
  --grass-deep: #2f8a28;
  --ridge: #64869c;
  --ridge-far: #8eacbf;
  --ridge-near: #4d6e86;
  --snow: #e4edf3;
}

html[data-time="night"] {
  --sky-top: #0c1730;
  --sky-mid: #163056;
  --sky-bottom: #24456e;
  --cloud: rgba(214, 224, 240, 0.34);
  --sun-opacity: 0;
  --moon-opacity: 1;
  --star-opacity: 1;
  --text: #f3f6fb;
  --text-2: #d7e0ec;
  --text-3: #b7c5d6;
  --border: rgba(243, 246, 251, 0.16);
  --border-2: rgba(243, 246, 251, 0.28);
  --grass: #1c6434;
  --grass-deep: #134826;
  --ridge: #2a3f5c;
  --ridge-far: #3f5d80;
  --ridge-near: #1a2b42;
  --snow: #dce6f2;
}

body {
  position: relative;
  background: linear-gradient(180deg, var(--sky-top) 0%, var(--sky-mid) 56%, var(--sky-bottom) 100%);
  background-attachment: fixed;
}

.sky {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 10.5rem;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.sun-mark {
  position: absolute;
  top: 1.35rem;
  left: calc(var(--sb-w, 220px) + 42%);
  width: 2.7rem;
  height: 2.7rem;
  border-radius: 50%;
  background: #ffe56a;
  box-shadow: 0 0 0 9px rgba(255, 229, 106, 0.28);
  opacity: var(--sun-opacity);
  transform: scale(1);
  transition: opacity 0.7s ease, transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

html:not([data-weather="sunny"]) .sun-mark {
  transform: scale(0.55);
}

.moon-mark {
  position: absolute;
  top: 1.35rem;
  left: calc(var(--sb-w, 220px) + 42%);
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: #f4f1e4;
  box-shadow: 0 0 0 8px rgba(244, 241, 228, 0.16);
  opacity: var(--moon-opacity);
  transform: scale(0.7);
  transition: opacity 0.7s ease, transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

html[data-time="night"] .moon-mark { transform: scale(1); }

.stars {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: var(--star-opacity);
  background-image:
    radial-gradient(1.4px 1.4px at 8% 18%, #fff 60%, transparent 62%),
    radial-gradient(1.2px 1.2px at 18% 42%, #fff 60%, transparent 62%),
    radial-gradient(1.6px 1.6px at 28% 12%, #fff 60%, transparent 62%),
    radial-gradient(1px 1px at 42% 28%, #fff 60%, transparent 62%),
    radial-gradient(1.5px 1.5px at 63% 16%, #fff 60%, transparent 62%),
    radial-gradient(1.1px 1.1px at 74% 34%, #fff 60%, transparent 62%),
    radial-gradient(1.4px 1.4px at 86% 14%, #fff 60%, transparent 62%),
    radial-gradient(1px 1px at 92% 40%, #fff 60%, transparent 62%),
    radial-gradient(1.3px 1.3px at 52% 8%, #fff 60%, transparent 62%);
}

.cloud-track {
  display: flex;
  width: 200%;
  height: 100%;
  animation: cloud-drift 72s linear infinite;
}

.clouds {
  width: 50%;
  height: 9.2rem;
  flex: none;
}

.clouds ellipse { fill: var(--cloud); }

.clouds-more { opacity: 0.2; transition: opacity 0.9s ease; }
html[data-weather="cloudy"] .clouds-more,
html[data-weather="rain"] .clouds-more { opacity: 1; }

.bird {
  position: absolute;
  top: 2.4rem;
  left: 0;
  width: 1.7rem;
  height: 0.7rem;
  animation: bird-glide 32s linear infinite;
}

.bird path {
  fill: none;
  stroke: #1c3348;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.55;
}

html[data-time="night"] .bird path { stroke: #d7e0ec; }

@keyframes cloud-drift {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(-50%, 0, 0); }
}

@keyframes bird-glide {
  0% { transform: translate3d(-3rem, 0, 0); }
  100% { transform: translate3d(105vw, -0.6rem, 0); }
}

.rain {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  opacity: var(--rain-opacity);
}

.drop {
  position: absolute;
  top: -12vh;
  width: 1.5px;
  border-radius: 2px;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.85));
  animation-name: rain-fall;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}

html:not([data-weather="rain"]) .drop { animation-play-state: paused; }

@keyframes rain-fall {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(-18px, 120vh, 0); }
}

.field {
  position: relative;
  z-index: 1;
  height: 22rem;
  pointer-events: none;
}

.mountains {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 5.4rem;
  width: 100%;
  height: 16rem;
  z-index: 0;
}

.ridge-far { fill: var(--ridge-far); }
.ridge { fill: var(--ridge); }
.ridge-near { fill: var(--ridge-near); }
.snow { fill: var(--snow); }

.field-hill {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  height: 7rem;
  background: var(--grass-deep);
  border-radius: 50% 50% 0 0 / 52px 52px 0 0;
}

.field-hill::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3.2rem;
  background: var(--grass);
}

.p-mobile-bar { background: var(--sky-mid); }

.sky-controls {
  position: fixed;
  top: 0.9rem;
  right: 1.15rem;
  z-index: 160;
  display: flex;
  align-items: stretch;
  gap: 0.45rem;
}

.daynight {
  display: grid;
  place-items: center;
  flex: none;
  align-self: center;
  width: 2.15rem;
  height: 2.15rem;
  margin: 0;
  padding: 0;
  border: 1px solid rgba(20, 32, 51, 0.2);
  border-radius: 999px;
  background: rgba(255, 254, 248, 0.78);
  color: #142033;
  backdrop-filter: blur(8px);
  cursor: pointer;
}

.daynight-icon {
  position: relative;
  width: 1.15rem;
  height: 1.15rem;
}

.daynight-icon svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transition: opacity 0.45s ease, transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.icon-moon {
  opacity: 0;
  transform: rotate(-28deg) scale(0.55);
}

html[data-time="night"] .icon-sun {
  opacity: 0;
  transform: rotate(36deg) scale(0.55);
}

html[data-time="night"] .icon-moon {
  opacity: 1;
  transform: none;
}

html[data-time="night"] .daynight {
  background: rgba(12, 23, 48, 0.62);
  border-color: rgba(243, 246, 251, 0.28);
  color: #f4f1e4;
}

.weather {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 4.05rem);
  padding: 0.22rem;
  background: rgba(255, 254, 248, 0.78);
  border: 1px solid rgba(20, 32, 51, 0.2);
  border-radius: 999px;
  backdrop-filter: blur(8px);
}

.weather-thumb {
  position: absolute;
  top: 0.22rem;
  bottom: 0.22rem;
  left: 0.22rem;
  width: 4.05rem;
  border-radius: 999px;
  background: #142033;
  transform: translateX(0);
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
  z-index: 0;
}

html[data-weather="cloudy"] .weather-thumb { transform: translateX(4.05rem); }
html[data-weather="rain"] .weather-thumb { transform: translateX(8.1rem); }

.weather-btn {
  position: relative;
  z-index: 1;
  border: 0;
  background: transparent;
  color: var(--text-2, #1c3348);
  font-family: "Nunito", sans-serif;
  font-weight: 700;
  font-size: 0.76rem;
  line-height: 1;
  width: 100%;
  padding: 0.42rem 0;
  text-align: center;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.35s ease;
}

.weather-btn[aria-pressed="true"] { color: #f7fbfe; }
.weather-btn:hover { color: var(--text, #142033); }
.weather-btn[aria-pressed="true"]:hover { color: #f7fbfe; }

html[data-time="night"] .weather {
  background: rgba(12, 23, 48, 0.62);
  border-color: rgba(243, 246, 251, 0.28);
}
html[data-time="night"] .weather-thumb { background: #f4f1e4; }
html[data-time="night"] .weather-btn[aria-pressed="true"],
html[data-time="night"] .weather-btn[aria-pressed="true"]:hover { color: #142033; }
html[data-time="night"] .social-btn {
  background: rgba(12, 23, 48, 0.35);
  border-color: rgba(243, 246, 251, 0.4);
}
html[data-time="night"] ::selection { background: #35557a; color: #f4f7fb; }

.plane {
  position: absolute;
  z-index: 5;
  top: 1.35rem;
  left: calc(var(--sb-w, 220px) + 2rem);
  width: 2.7rem;
  height: 1.75rem;
  padding: 0;
  border: 0;
  background: none;
  cursor: grab;
  pointer-events: auto;
  touch-action: none;
}
.plane svg { width: 100%; height: 100%; display: block; overflow: visible; }
.plane.is-held { cursor: grabbing; }
.plane.is-flying { pointer-events: none; z-index: 180; }
.plane.is-landed { position: absolute; z-index: 4; cursor: grab; }

.flag {
  position: absolute;
  left: 64%;
  bottom: 6.6rem;
  width: 1.15rem;
  height: 2rem;
  z-index: 2;
}
.flag-pole { stroke: #142033; stroke-width: 1.6; }
.flag-fly { fill: #f2c14e; stroke: #142033; stroke-width: 1.2; stroke-linejoin: round; }
html[data-time="night"] .flag-pole { stroke: #f3f6fb; }
html[data-time="night"] .flag-fly { stroke: #f3f6fb; fill: #e7d48a; }

.plane-note {
  position: absolute;
  left: 50%;
  bottom: 10.5rem;
  transform: translateX(-50%);
  z-index: 3;
  margin: 0;
  font-family: "Nunito", sans-serif;
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--text, #142033);
  white-space: nowrap;
  pointer-events: none;
}

@media (max-width: 800px) {
  .sun-mark, .moon-mark { left: 1.1rem; top: 1.05rem; width: 2.1rem; height: 2.1rem; }
  .plane { top: 0.72rem; left: 3.6rem; width: 2.3rem; height: 1.5rem; }
  #about { padding-top: 6.2rem; }
  .p-container { padding-top: 6.2rem; }
  .sky-controls { top: 0.65rem; right: 0.55rem; gap: 0.35rem; }
  .weather-btn { font-size: 0.72rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { transition: none; }
  .cloud-track, .bird, .drop { animation: none; }
  .bird { opacity: 0; }
  .sun-mark, .clouds-more, .weather-thumb, .weather-btn, .daynight-icon svg { transition: none; }
}