/**
 * 实况捷径 · Playful Geometric 2.0
 * Shared design tokens & base utilities
 * Mobile-first · safe-area · touch-friendly
 */

:root {
  color-scheme: light dark;

  /* Surfaces */
  --bg: #FFFDF7;
  --bg-elevated: #FFFFFF;
  --card: #FFFFFF;
  --muted: #F4F1EA;
  --bg-input: #F4F1EA;

  /* Text */
  --fg: #1A1A22;
  --fg-secondary: #5C5C66;
  --muted-fg: #5C5C66;

  /* Brand */
  --accent: #7C5CFC;
  --accent-soft: color-mix(in srgb, #7C5CFC 14%, transparent);
  --accent-fg: #FFFFFF;
  --secondary: #F472B6;
  --tertiary: #F5C542;
  --quaternary: #34D399;
  --success: #10B981;
  --error: #EF4444;
  --warn: #F59E0B;

  /* Lines & elevation */
  --border: #E8E2D6;
  --border-strong: #1A1A22;
  --shadow-color: rgba(26, 26, 34, 0.12);
  --shadow-sm: 3px 3px 0 var(--border-strong);
  --shadow-md: 5px 5px 0 var(--border-strong);
  --shadow-lg: 8px 8px 0 var(--border-strong);
  --shadow-soft: 0 8px 28px var(--shadow-color);
  --shadow-accent: 4px 4px 0 var(--accent);

  /* Shape */
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 9999px;
  --radius: var(--radius-lg);

  /* Type */
  --font-display: "Outfit", system-ui, -apple-system, "PingFang SC", "Helvetica Neue", sans-serif;
  --font-body: "Plus Jakarta Sans", system-ui, -apple-system, "PingFang SC", "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.35rem;
  --text-2xl: clamp(1.5rem, 5vw, 2.25rem);
  --text-3xl: clamp(1.75rem, 6vw, 2.5rem);
  --leading: 1.55;
  --leading-tight: 1.2;

  /* Space */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --container-pad-x: max(16px, env(safe-area-inset-left, 0px), env(safe-area-inset-right, 0px));
  --container-pad-y: max(20px, env(safe-area-inset-top, 0px));
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --touch-min: 44px;

  /* Motion */
  --ease-spring: cubic-bezier(0.34, 1.45, 0.64, 1);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 160ms;
  --duration: 280ms;
  --transition: transform var(--duration) var(--ease-spring),
    box-shadow var(--duration) var(--ease-out),
    background-color var(--duration-fast) ease,
    border-color var(--duration-fast) ease,
    color var(--duration-fast) ease,
    opacity var(--duration-fast) ease;

  /* Legacy aliases used by pages */
  --bg-card: var(--card);
  --fg-2: var(--fg-secondary);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0B1220;
    --bg-elevated: #141C2E;
    --card: #141C2E;
    --muted: #1C2640;
    --bg-input: #1C2640;
    --fg: #F1F5F9;
    --fg-secondary: #94A3B8;
    --muted-fg: #94A3B8;
    --accent: #A78BFA;
    --accent-soft: color-mix(in srgb, #A78BFA 18%, transparent);
    --secondary: #F9A8D4;
    --tertiary: #FCD34D;
    --quaternary: #6EE7B7;
    --success: #34D399;
    --error: #F87171;
    --border: #2A3654;
    --border-strong: #E2E8F0;
    --shadow-color: rgba(0, 0, 0, 0.45);
    --shadow-sm: 3px 3px 0 rgba(0, 0, 0, 0.55);
    --shadow-md: 5px 5px 0 rgba(0, 0, 0, 0.55);
    --shadow-lg: 8px 8px 0 rgba(0, 0, 0, 0.55);
    --shadow-soft: 0 12px 40px rgba(0, 0, 0, 0.4);
    --shadow-accent: 4px 4px 0 var(--accent);
  }
}

/* ── Reset & base ─────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading);
  color: var(--fg);
  background-color: var(--bg);
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

img {
  max-width: 100%;
  display: block;
  height: auto;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: var(--accent);
  text-decoration: none;
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 55%, transparent);
  outline-offset: 2px;
}

/* Mesh background (subtle, mobile-safe) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 100% -10%, color-mix(in srgb, var(--tertiary) 35%, transparent), transparent 55%),
    radial-gradient(ellipse 70% 45% at -10% 90%, color-mix(in srgb, var(--secondary) 28%, transparent), transparent 50%),
    radial-gradient(ellipse 50% 40% at 90% 80%, color-mix(in srgb, var(--quaternary) 18%, transparent), transparent 50%),
    radial-gradient(ellipse 40% 30% at 50% 0%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 60%);
}

/* Optional geometric blobs (pages that include .geo-bg) */
.geo-bg {
  position: fixed;
  pointer-events: none;
  z-index: 0;
  opacity: 0.18;
  filter: blur(2px);
}

.circle-yellow {
  width: min(280px, 55vw);
  height: min(280px, 55vw);
  background: var(--tertiary);
  border-radius: 50%;
  top: -80px;
  right: -60px;
}

.circle-pink {
  width: min(220px, 48vw);
  height: min(220px, 48vw);
  background: var(--secondary);
  border-radius: 50%;
  bottom: 80px;
  left: -70px;
}

.triangle {
  width: 0;
  height: 0;
  border-left: 70px solid transparent;
  border-right: 70px solid transparent;
  border-bottom: 120px solid var(--quaternary);
  opacity: 0.15;
  bottom: 28%;
  right: 8%;
}

.square {
  width: min(100px, 22vw);
  height: min(100px, 22vw);
  background: var(--quaternary);
  bottom: 28%;
  right: 6%;
  transform: rotate(15deg);
  border-radius: 12px;
}

/* Layout shell */
.container {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: var(--container-pad-y) var(--container-pad-x) calc(40px + var(--safe-bottom));
  position: relative;
  z-index: 1;
}

/* Typography */
h1,
.h1 {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: var(--leading-tight);
  color: var(--fg);
}

.subtitle {
  font-size: var(--text-sm);
  color: var(--muted-fg);
  font-weight: 500;
  margin-top: var(--space-2);
}

.card-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-5);
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 1.3;
}

/* Cards */
.card {
  background: color-mix(in srgb, var(--card) 92%, transparent);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: clamp(18px, 4.5vw, 28px);
  margin-bottom: var(--space-5);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

@media (hover: hover) and (pointer: fine) {
  .card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
  }
}

/* Forms */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg);
  margin-bottom: var(--space-2);
}

.input-field,
.form-input,
textarea {
  width: 100%;
}

.input-field,
.form-input,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="search"],
textarea {
  min-height: var(--touch-min);
  padding: 12px 16px;
  background: var(--bg-input);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 16px; /* prevent iOS zoom */
  color: var(--fg);
  transition: var(--transition);
  -webkit-appearance: none;
  appearance: none;
}

.input-field:focus,
.form-input:focus,
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="search"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--card);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.input-field::placeholder,
.form-input::placeholder,
input::placeholder,
textarea::placeholder {
  color: var(--muted-fg);
  opacity: 0.85;
}

/* Buttons */
.btn {
  width: 100%;
  min-height: 52px;
  padding: 14px 20px;
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-pill);
  font-size: var(--text-base);
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-body);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
  user-select: none;
  -webkit-user-select: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-fg);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background: var(--quaternary);
  color: #064e3b;
  box-shadow: var(--shadow-sm);
  margin-top: var(--space-3);
}

.btn-outline {
  background: transparent;
  color: var(--fg);
  box-shadow: none;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: 2px 2px 0 var(--border) !important;
  background: var(--muted) !important;
  color: var(--muted-fg) !important;
}

@media (hover: hover) and (pointer: fine) {
  .btn-primary:hover:not(:disabled),
  .btn-secondary:hover:not(:disabled) {
    transform: translate(-2px, -2px);
    box-shadow: var(--shadow-md);
  }
}

.btn:active:not(:disabled) {
  transform: translate(1px, 1px);
  box-shadow: 2px 2px 0 var(--border-strong);
}

/* Contact / tool grids */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.contact-item {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-min);
  padding: 12px 10px;
  background: var(--bg-input);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-pill);
  color: var(--fg);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 700;
  transition: var(--transition);
  box-shadow: 2px 2px 0 var(--border-strong);
  text-align: center;
  word-break: keep-all;
}

@media (hover: hover) and (pointer: fine) {
  .contact-item:hover {
    transform: translate(-2px, -2px);
    box-shadow: 4px 4px 0 var(--border-strong);
    background: var(--tertiary);
    color: var(--fg);
  }
}

.contact-item:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 var(--border-strong);
}

/* Result boxes */
.result-box {
  margin-top: var(--space-4);
  padding: var(--space-4);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  display: none;
  font-size: var(--text-sm);
  line-height: 1.55;
  font-weight: 600;
  word-break: break-word;
}

.result-box.success {
  display: block;
  background: color-mix(in srgb, var(--success) 14%, var(--card));
  color: var(--success);
  border-color: var(--success);
}

.result-box.error {
  display: block;
  background: color-mix(in srgb, var(--error) 12%, var(--card));
  color: var(--error);
  border-color: var(--error);
}

/* Language toggle */
.lang-toggle {
  position: fixed;
  top: max(12px, env(safe-area-inset-top, 0px));
  right: max(12px, env(safe-area-inset-right, 0px));
  z-index: 1000;
  min-width: 44px;
  min-height: 40px;
  background: color-mix(in srgb, var(--card) 90%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-pill);
  padding: 8px 14px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--fg);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

@media (hover: hover) and (pointer: fine) {
  .lang-toggle:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
    color: var(--accent);
  }
}

/* Header block */
.header {
  text-align: center;
  margin-bottom: clamp(28px, 6vw, 44px);
}

.logo-wrapper {
  display: inline-block;
  position: relative;
  margin-bottom: var(--space-5);
}

.logo {
  width: clamp(72px, 18vw, 84px);
  height: clamp(72px, 18vw, 84px);
  border-radius: 20px;
  border: 3px solid var(--border-strong);
  box-shadow: var(--shadow-md);
  object-fit: cover;
  transition: var(--transition);
}

@media (hover: hover) and (pointer: fine) {
  .logo:hover {
    transform: rotate(-4deg) scale(1.04);
  }
}

/* Modals — 全尺寸垂直水平居中（支付二选一等） */
.modal-overlay {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 18, 28, 0.55);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: max(16px, env(safe-area-inset-top, 0px))
    max(16px, env(safe-area-inset-right, 0px))
    max(16px, env(safe-area-inset-bottom, 0px))
    max(16px, env(safe-area-inset-left, 0px));
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  animation: fadeIn var(--duration) var(--ease-out);
}

.modal-container,
.modal {
  width: 100%;
  max-width: 420px;
  max-height: min(90dvh, 720px);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--card);
  border: 3px solid var(--border-strong);
  border-radius: var(--radius-xl);
  padding: clamp(24px, 5vw, 36px) clamp(20px, 4vw, 32px) clamp(24px, 5vw, 32px);
  box-shadow: var(--shadow-lg);
  animation: popIn var(--duration) var(--ease-spring);
  position: relative;
  margin: auto;
}

.modal-title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
}

.modal-close-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--secondary);
  border: 2px solid var(--border-strong);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: white;
  font-size: 20px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 2px 2px 0 var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

@media (hover: hover) and (pointer: fine) {
  .modal-close-btn:hover {
    transform: rotate(90deg);
  }
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes popIn {
  0% { opacity: 0; transform: scale(0.94) translateY(8px); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}

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

@keyframes bounceIn {
  0% { opacity: 0; transform: scale(0.92) translateY(12px); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}

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

@keyframes wiggle {
  0%, 100% { transform: rotate(0deg); }
  25% { transform: rotate(3deg); }
  75% { transform: rotate(-3deg); }
}

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

/* Selection affordance */
::selection {
  background: color-mix(in srgb, var(--accent) 28%, transparent);
  color: var(--fg);
}

/* Utility: hide decorative blobs on very small / reduced data feel */
@media (max-width: 360px) {
  .contact-grid {
    gap: 8px;
  }

  .contact-item {
    font-size: 0.8rem;
    padding: 10px 6px;
  }

  .card {
    border-radius: 16px;
  }

  .geo-bg {
    opacity: 0.1;
  }
}

/* Large phones / small tablets: slightly wider content */
@media (min-width: 540px) {
  .container {
    padding-left: 24px;
    padding-right: 24px;
  }
}

/* Landscape phone: tighter vertical */
@media (max-height: 480px) and (orientation: landscape) {
  .header {
    margin-bottom: 16px;
  }

  .logo {
    width: 56px;
    height: 56px;
  }
}