:root {
  color-scheme: light;
  --ink: #0b1220;
  --glow: #e6f7ff;
  --accent: #ff9a62;
  --accent-deep: #f45b69;
  --panel: rgba(10, 16, 26, 0.86);
  --panel-border: rgba(255, 255, 255, 0.2);
  --menu: rgba(6, 10, 20, 0.75);
  --menu-border: rgba(255, 255, 255, 0.15);
  --blur: saturate(120%) blur(16px);
  --dock-height: 52px;
  --bg-spot-1-color: rgba(255, 169, 76, 0.4);
  --bg-spot-1-position: 12% 20%;
  --bg-spot-2-color: rgba(48, 205, 255, 0.35);
  --bg-spot-2-position: 82% 18%;
  --bg-spot-3-color: rgba(250, 89, 167, 0.3);
  --bg-spot-3-position: 70% 80%;
  --bg-base-1: #0a1120;
  --bg-base-2: #090516;
  --bg-base-3: #0e111e;
  --bg-base-4: #151127;
  font-family: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
}

body {
  color: var(--glow);
  background: #05070f;
  overflow: hidden;
}

.os {
  position: relative;
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-rows: auto 1fr;
  background:
    radial-gradient(circle at var(--bg-spot-1-position), var(--bg-spot-1-color), transparent 48%),
    radial-gradient(circle at var(--bg-spot-2-position), var(--bg-spot-2-color), transparent 40%),
    radial-gradient(circle at var(--bg-spot-3-position), var(--bg-spot-3-color), transparent 46%),
    linear-gradient(125deg, var(--bg-base-1), var(--bg-base-2) 45%, var(--bg-base-3) 70%, var(--bg-base-4));
}

.os::before,
.os::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.os::before {
  background: linear-gradient(140deg, rgba(255, 255, 255, 0.08), transparent 60%);
  opacity: 0.6;
}

.os::after {
  background-image: radial-gradient(rgba(255, 255, 255, 0.15) 1px, transparent 1px);
  background-size: 120px 120px;
  mix-blend-mode: screen;
  opacity: 0.16;
}

.menu-bar {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0;
  background: var(--menu);
  border-bottom: 1px solid var(--menu-border);
  backdrop-filter: var(--blur);
}

.menu-item {
  position: relative;
  height: 100%;
  display: flex;
  align-items: stretch;
}

.menu-button {
  appearance: none;
  border: 1px solid transparent;
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  border-right: 1px solid rgba(0, 0, 0, 0.35);
  background: transparent;
  color: var(--glow);
  padding: 10px 18px;
  border-radius: 0;
  letter-spacing: 0.06em;
  font-weight: 600;
  cursor: pointer;
  transition: border 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.menu-button:hover,
.menu-button:focus-visible {
  border-color: transparent;
  background: rgba(255, 255, 255, 0.9);
  color: #0b1220;
  transform: none;
}

.menu-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 160px;
  background: rgba(10, 12, 20, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 0;
  padding: 0;
  display: none;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}

.menu-item.is-open .menu-dropdown {
  display: grid;
  gap: 0;
}

.menu-category {
  position: relative;
}

.menu-category > .menu-option {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.menu-category > .menu-option::after {
  content: "›";
  opacity: 0.7;
}

.menu-submenu {
  position: absolute;
  top: 0;
  left: 100%;
  min-width: 180px;
  background: rgba(10, 12, 20, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: none;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}

.menu-category:hover .menu-submenu,
.menu-category:focus-within .menu-submenu {
  display: grid;
}

.menu-submenu .menu-option {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.menu-option {
  appearance: none;
  width: 100%;
  border: 1px solid transparent;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.04);
  color: var(--glow);
  padding: 10px 16px;
  border-radius: 0;
  text-align: left;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, border 0.2s ease;
}

.menu-option:hover,
.menu-option:focus-visible {
  border-color: transparent;
  background: rgba(255, 255, 255, 0.9);
  color: #0b1220;
}

.menu-spacer {
  flex: 1;
}

.menu-clock {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.7;
  padding: 0 18px;
}

.menu-user {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0 16px;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.85;
}

.menu-user-icon {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  display: inline-block;
  position: relative;
}

.menu-user-icon::before {
  content: "";
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.75);
  top: 3px;
  left: 50%;
  transform: translateX(-50%);
}

.menu-user-icon::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 6px;
  border-radius: 8px 8px 4px 4px;
  background: rgba(255, 255, 255, 0.3);
  bottom: 3px;
  left: 50%;
  transform: translateX(-50%);
}

.desktop {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  padding: 48px 24px calc(48px + var(--dock-height));
}

.desktop-stage {
  width: min(1080px, 100%);
  min-height: 60vh;
  border-radius: 30px;
  border: none;
  background: transparent;
  display: grid;
  place-items: center;
  text-align: center;
  backdrop-filter: blur(6px);
}

.window-layer {
  position: absolute;
  inset: 0;
  pointer-events: auto;
}

.window {
  position: absolute;
  width: 560px;
  height: 380px;
  min-width: 320px;
  min-height: 240px;
  background: rgba(8, 12, 22, 0.86);
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
  display: grid;
  grid-template-rows: auto 1fr;
  resize: both;
  overflow: auto;
  pointer-events: auto;
}

.window.is-minimized {
  opacity: 0;
  pointer-events: none;
}

.window.is-maximized {
  border-radius: 0;
  resize: none;
}

.window-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: rgba(4, 7, 14, 0.8);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  cursor: grab;
  user-select: none;
  position: relative;
  z-index: 2;
}

.window-header:active {
  cursor: grabbing;
}

.window-title {
  font-weight: 600;
}

.window-titlebar {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.window-menu {
  position: relative;
}

.window-menu-button {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  color: var(--glow);
  width: 28px;
  height: 22px;
  display: grid;
  place-items: center;
  cursor: pointer;
}

.window-menu-button:hover,
.window-menu-button:focus-visible {
  background: rgba(255, 255, 255, 0.9);
  color: #0b1220;
  border-color: transparent;
}

.window-menu-dropdown {
  position: absolute;
  top: 28px;
  left: 0;
  min-width: 180px;
  background: rgba(10, 12, 20, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: none;
  z-index: 20;
}

.window-menu.is-open .window-menu-dropdown {
  display: grid;
}

.window-menu-item {
  position: relative;
}

.window-menu-option {
  appearance: none;
  width: 100%;
  border: none;
  background: rgba(255, 255, 255, 0.04);
  color: var(--glow);
  padding: 10px 16px;
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  cursor: pointer;
}

.window-menu-option:hover,
.window-menu-option:focus-visible {
  background: rgba(255, 255, 255, 0.9);
  color: #0b1220;
}

.window-menu-parent > .window-menu-option::after {
  content: "›";
  float: right;
  opacity: 0.7;
}

.window-menu-submenu {
  position: absolute;
  top: 0;
  left: 100%;
  min-width: 180px;
  background: rgba(10, 12, 20, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.12);
  display: none;
}

.window-menu-parent:hover .window-menu-submenu,
.window-menu-parent:focus-within .window-menu-submenu {
  display: grid;
}

.window-controls {
  display: inline-flex;
  gap: 6px;
}

.window-control {
  appearance: none;
  width: 26px;
  height: 22px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  color: var(--glow);
  font-size: 0.7rem;
  cursor: pointer;
}

.window-control:hover,
.window-control:focus-visible {
  background: rgba(255, 255, 255, 0.9);
  color: #0b1220;
  border-color: transparent;
}

.window-body {
  padding: 18px;
  overflow: auto;
  position: relative;
  z-index: 1;
}

.settings-layout {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 18px;
  height: 100%;
}

.settings-nav {
  border-right: 1px solid rgba(255, 255, 255, 0.15);
  padding-right: 12px;
}

.settings-nav button {
  appearance: none;
  width: 100%;
  border: none;
  background: rgba(255, 255, 255, 0.08);
  color: var(--glow);
  padding: 10px 12px;
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
}

.settings-nav button.is-active {
  background: rgba(255, 255, 255, 0.9);
  color: #0b1220;
}

.settings-panel h2 {
  margin: 0 0 10px;
  font-size: 1.2rem;
}

.settings-panel.is-hidden {
  display: none;
}

.settings-field {
  display: grid;
  gap: 8px;
  max-width: 320px;
}

.settings-field label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  opacity: 0.8;
}

.settings-field select {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.1);
  color: var(--glow);
  padding: 10px 12px;
}

.settings-field input {
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.1);
  color: var(--glow);
  padding: 10px 12px;
}

.settings-field select option {
  color: #0b1220;
}

.settings-actions {
  margin-top: 12px;
}

.settings-button {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.12);
  color: var(--glow);
  padding: 10px 16px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  cursor: pointer;
}

.settings-button:hover,
.settings-button:focus-visible {
  background: rgba(255, 255, 255, 0.9);
  color: #0b1220;
  border-color: transparent;
}

.window-modal-layer {
  position: absolute;
  inset: 0;
  padding: 12px;
  display: grid;
  place-items: start center;
  background: rgba(4, 6, 12, 0.6);
  z-index: 999;
}

.window-modal {
  width: min(800px, 100%);
  max-height: 100%;
  background: rgba(10, 14, 24, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: grid;
  grid-template-rows: auto 1fr;
}

.window-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.window-modal-close {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  color: var(--glow);
  width: 26px;
  height: 22px;
  cursor: pointer;
}

.window-modal-close:hover,
.window-modal-close:focus-visible {
  background: rgba(255, 255, 255, 0.9);
  color: #0b1220;
  border-color: transparent;
}

.window-modal-body {
  padding: 16px;
  overflow-y: auto;
}

.system-about {
  display: grid;
  gap: 12px;
  justify-items: center;
  text-align: center;
}

.system-about-logo {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.2);
  border-top-color: var(--accent);
  border-right-color: var(--accent-deep);
  position: relative;
}

.system-about-logo::before,
.system-about-logo::after {
  content: "";
  position: absolute;
  inset: 12px;
  border-radius: 50%;
  border: 3px solid transparent;
  border-top-color: rgba(255, 255, 255, 0.7);
  border-left-color: rgba(255, 255, 255, 0.3);
}

.system-about-logo::after {
  inset: 24px;
  border-width: 2px;
  border-top-color: rgba(255, 255, 255, 0.85);
}

.system-about-meta {
  display: grid;
  gap: 6px;
  font-size: 0.9rem;
  opacity: 0.85;
}


.dock {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: var(--dock-height);
  background: rgba(255, 255, 255, 0.08);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  z-index: 5;
  backdrop-filter: var(--blur);
  transition: opacity 0.2s ease;
}

.dock.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.dock-button {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  color: var(--glow);
  padding: 6px 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  cursor: pointer;
}

.dock-button:hover,
.dock-button:focus-visible {
  background: rgba(255, 255, 255, 0.9);
  color: #0b1220;
  border-color: transparent;
}

.desktop-placeholder h2 {
  margin: 0 0 8px;
  font-size: clamp(2rem, 4vw, 3.4rem);
}

.desktop-placeholder p {
  margin: 0;
  font-size: 1.1rem;
  color: rgba(230, 247, 255, 0.65);
}

.desktop-placeholder {
  opacity: 0;
  pointer-events: none;
}

.welcome-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(7, 10, 18, 0.65);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
  z-index: 6;
}

.welcome-overlay.is-active {
  opacity: 1;
  pointer-events: auto;
}

.welcome-card {
  display: grid;
  gap: 18px;
  align-items: center;
  justify-items: center;
  padding: 28px 36px;
  border-radius: 24px;
  background: rgba(6, 8, 16, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
  transform: translateY(30px) scale(0.95);
  animation: cardFloat 1.2s ease forwards;
}

.welcome-message {
  font-size: 1.4rem;
  letter-spacing: 0.05em;
}

.swirl-loader {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  border: 4px solid rgba(255, 255, 255, 0.15);
  border-top-color: var(--accent);
  border-right-color: var(--accent-deep);
  position: relative;
  animation: spin 1.1s linear infinite;
}

.swirl-loader::before,
.swirl-loader::after {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 50%;
  border: 3px solid transparent;
  border-top-color: rgba(255, 255, 255, 0.5);
  border-left-color: rgba(255, 255, 255, 0.2);
  animation: spinReverse 1.6s linear infinite;
}

.swirl-loader::after {
  inset: 22px;
  border-width: 2px;
  border-top-color: rgba(255, 255, 255, 0.8);
}

.login {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 15% 20%, rgba(84, 255, 197, 0.26), transparent 45%),
    radial-gradient(circle at 80% 20%, rgba(255, 154, 98, 0.4), transparent 40%),
    linear-gradient(135deg, #070a15, #110f1c 48%, #0e1d2f);
  z-index: 8;
  transition: opacity 0.5s ease, transform 0.6s ease;
}

.login.is-hidden {
  opacity: 0;
  pointer-events: none;
  transform: scale(1.02);
}

.login-panel {
  width: min(420px, 90vw);
  padding: 32px 28px;
  border-radius: 26px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
  display: grid;
  gap: 22px;
}

.login-known-user {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 12px 16px;
  text-align: center;
  font-size: 0.95rem;
}

.login-known-user.is-hidden {
  display: none;
}

.login-title {
  display: grid;
  gap: 6px;
}

.login-title span {
  font-size: 2rem;
  font-weight: 700;
}

.login-title small {
  color: rgba(230, 247, 255, 0.7);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.login-form {
  display: grid;
  gap: 18px;
}

.login-form label {
  display: grid;
  gap: 8px;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.login-form label.is-hidden {
  display: none;
}

.login-form input {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 16px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--glow);
  font-size: 1rem;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

.login-form input:focus {
  outline: none;
  border-color: rgba(255, 255, 255, 0.4);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

.login-button {
  appearance: none;
  border: none;
  border-radius: 18px;
  padding: 12px 18px;
  background: linear-gradient(120deg, var(--accent), var(--accent-deep));
  color: #0d0f16;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.login-button:hover,
.login-button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 18px 30px rgba(244, 91, 105, 0.4);
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes spinReverse {
  from {
    transform: rotate(360deg);
  }
  to {
    transform: rotate(0deg);
  }
}

@keyframes cardFloat {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 700px) {
  .menu-bar {
    gap: 10px;
  }

  .desktop-stage {
    min-height: 50vh;
  }
}