/**
 * Site Portrait - 主樣式
 * 風格：復古打字機 (Wabi-sabi + Retro-Digital)
 */

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

/* Variables */
:root {
  --paper: #F4EFE6;
  --ink: #2C2416;
  --ink-faded: #6B5D4F;
  --accent: #8B4513;
  --border: #D4C4B0;
  --shadow: rgba(44, 36, 22, 0.15);
  --font-typewriter: 'Courier Prime', monospace;
  --font-title: 'Special Elite', cursive;
  --font-sans: 'Noto Sans TC', sans-serif;
  /* 海報用字體（保留給 poster.css） */
  --font-mono: 'Courier Prime', monospace;
  --font-serif: 'Playfair Display', Georgia, serif;
}

/* Base */
html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-typewriter);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.8;
  min-height: 100vh;
  position: relative;
}

/* 紙張紋理背景 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200"><filter id="n"><feTurbulence type="fractalNoise" baseFrequency="0.9" numOctaves="4" /><feColorMatrix values="0 0 0 0 0, 0 0 0 0 0, 0 0 0 0 0, 0 0 0 0.03 0" /></filter><rect width="200" height="200" filter="url(%23n)" /></svg>');
  opacity: 0.6;
  pointer-events: none;
  z-index: 0;
}

/* App Layout */
.app {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 2rem;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

/* 紙張摺痕效果 */
.app::after {
  content: '';
  position: absolute;
  top: 20%;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(44, 36, 22, 0.05), transparent);
  pointer-events: none;
}

/* Header - 打字機標題效果 */
.header {
  text-align: center;
  margin-bottom: 3rem;
  padding: 2rem 1rem;
  border-bottom: 3px double var(--border);
  position: relative;
}

/* 打字機孔洞裝飾 */
.header::before,
.header::after {
  content: '';
  position: absolute;
  bottom: -8px;
  width: 12px;
  height: 12px;
  background: var(--paper);
  border: 2px solid var(--border);
  border-radius: 50%;
}

.header::before {
  left: 20px;
}

.header::after {
  right: 20px;
}

.logo {
  font-family: var(--font-title);
  font-size: 2.5rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--ink);
  text-shadow: 2px 2px 0 rgba(44, 36, 22, 0.1);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.logo-icon {
  display: inline-block;
  filter: sepia(0.4);
}

.tagline {
  font-family: var(--font-sans);
  color: var(--ink-faded);
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* Input Section */
.input-section {
  margin-bottom: 3rem;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.4);
  border: 1px solid var(--border);
  box-shadow:
    0 2px 8px var(--shadow),
    inset 0 0 0 1px rgba(255, 255, 255, 0.5);
}

.url-form {
  width: 100%;
}

.input-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

#urlInput {
  width: 100%;
  background: white;
  border: none;
  border-bottom: 2px solid var(--ink);
  outline: none;
  color: var(--ink);
  font-size: 1rem;
  font-family: var(--font-typewriter);
  font-weight: 400;
  padding: 0.75rem 0.5rem;
  letter-spacing: 0.05em;
  transition: border-color 0.2s ease;
  box-shadow: 0 1px 0 rgba(44, 36, 22, 0.1);
}

#urlInput:focus {
  border-bottom-color: var(--accent);
}

#urlInput::placeholder {
  color: var(--ink-faded);
  font-style: italic;
}

.submit-btn {
  align-self: flex-start;
  background: var(--ink);
  color: var(--paper);
  border: 3px solid var(--ink);
  padding: 0.875rem 2rem;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  font-family: var(--font-typewriter);
  transition: all 0.2s ease;
  box-shadow:
    3px 3px 0 rgba(44, 36, 22, 0.2),
    0 2px 4px var(--shadow);
  position: relative;
}

.submit-btn:hover:not(:disabled) {
  transform: translate(1px, 1px);
  box-shadow:
    2px 2px 0 rgba(44, 36, 22, 0.2),
    0 1px 2px var(--shadow);
}

.submit-btn:active:not(:disabled) {
  transform: translate(3px, 3px);
  box-shadow: none;
}

.submit-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.submit-btn .btn-loading {
  display: none;
}

.submit-btn.loading .btn-text {
  display: none;
}

.submit-btn.loading .btn-loading {
  display: inline;
}

/* 進度指示 */
.submit-btn[data-progress]::after {
  content: attr(data-progress);
  position: absolute;
  bottom: -1.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--ink-faded);
  white-space: nowrap;
}

.spinner {
  width: 16px;
  height: 16px;
  animation: spin 1s linear infinite;
}

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

/* Error Message */
.error-msg {
  margin-top: 1.5rem;
  padding: 1rem;
  background: rgba(139, 69, 19, 0.1);
  border-left: 4px solid var(--accent);
  color: var(--accent);
  font-size: 0.875rem;
  font-family: var(--font-typewriter);
}

.error-msg:not([hidden]) {
  display: block;
}

/* Result Section */
.result-section {
  display: none;
}

.result-section:not([hidden]) {
  display: block;
}

/* Controls - 老式按鈕組 */
.controls {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.3);
  border: 1px dashed var(--border);
}

.regenerate-btn,
.download-btn {
  background: white;
  border: 2px solid var(--ink);
  color: var(--ink);
  padding: 0.75rem 1.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  font-family: var(--font-typewriter);
  transition: all 0.2s ease;
  box-shadow: 2px 2px 0 var(--ink);
}

.regenerate-btn:hover,
.download-btn:hover {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 var(--ink);
}

.regenerate-btn:active,
.download-btn:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

.download-btn {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  box-shadow: 2px 2px 0 rgba(139, 69, 19, 0.5);
}

.download-btn:hover {
  box-shadow: 1px 1px 0 rgba(139, 69, 19, 0.5);
}

/* Poster Wrapper - 相框效果 */
.poster-wrapper {
  display: flex;
  justify-content: center;
  padding: 2.5rem;
  background: white;
  border: 8px solid var(--border);
  margin-bottom: 2rem;
  box-shadow:
    0 4px 12px var(--shadow),
    inset 0 0 0 2px white,
    inset 0 0 0 3px var(--ink-faded);
  position: relative;
}

.poster-wrapper::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  bottom: 12px;
  border: 1px solid rgba(44, 36, 22, 0.1);
  pointer-events: none;
}

.poster-container {
  box-shadow: 0 8px 16px rgba(44, 36, 22, 0.2);
}

/* Site Info - 打字機資訊卡 */
.site-info {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--border);
  font-family: var(--font-typewriter);
}

.info-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px dotted var(--border);
}

.info-item:last-child {
  border-bottom: none;
}

.info-label {
  font-size: 0.625rem;
  color: var(--ink-faded);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 700;
}

.info-label::before {
  content: '> ';
  color: var(--accent);
}

.info-value {
  font-size: 0.875rem;
  color: var(--ink);
  word-break: break-word;
  padding-left: 1rem;
}

.color-palette {
  display: flex;
  gap: 0.5rem;
  padding-left: 1rem;
}

.color-swatch {
  width: 36px;
  height: 36px;
  border: 2px solid var(--ink);
  box-shadow: 2px 2px 0 rgba(44, 36, 22, 0.2);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--ink);
  color: var(--paper);
  padding: 1rem 2rem;
  font-size: 0.875rem;
  font-family: var(--font-typewriter);
  letter-spacing: 0.05em;
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
  z-index: 1000;
  box-shadow: 0 4px 12px rgba(44, 36, 22, 0.4);
  border: 2px solid var(--ink);
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
  .app {
    padding: 2rem 1.25rem;
  }

  .logo {
    font-size: 1.75rem;
  }

  .input-section {
    padding: 1.5rem;
  }

  .submit-btn {
    width: 100%;
  }

  .controls {
    flex-direction: column;
    gap: 1rem;
  }

  .regenerate-btn,
  .download-btn {
    width: 100%;
  }

  .poster-wrapper {
    padding: 1.5rem;
  }
}