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

:root {
  --primary: #667eea;
  --primary-dark: #5a67d8;
  --accent: #764ba2;
  --bg: #f7f8fc;
  --card-bg: #ffffff;
  --text: #1a202c;
  --text-secondary: #718096;
  --border: #e2e8f0;
  --success: #48bb78;
  --error: #f56565;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
  --gradient: linear-gradient(135deg, var(--primary), var(--accent));
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --transition: 0.2s ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1117;
    --card-bg: #1a1d2e;
    --text: #e2e8f0;
    --text-secondary: #a0aec0;
    --border: #2d3748;
    --shadow: 0 4px 24px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.4);
  }
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Layout ===== */
.container {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== Header ===== */
header {
  background: var(--gradient);
  padding: 32px 0 28px;
  text-align: center;
  color: #fff;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}

.logo-icon {
  font-size: 1.8rem;
}

header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.tagline {
  margin-top: 4px;
  font-size: 0.95rem;
  opacity: 0.9;
}

/* ===== Cards ===== */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
  margin-top: 24px;
}

.card h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 20px;
}

/* ===== Form ===== */
.hp-field {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
  overflow: hidden;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.optional {
  font-weight: 400;
  color: var(--text-secondary);
}

select,
input[type="text"],
textarea {
  width: 100%;
  padding: 10px 14px;
  font-size: 0.95rem;
  font-family: var(--font);
  border: 2px solid var(--border);
  border-radius: 8px;
  background: var(--card-bg);
  color: var(--text);
  transition: border-color var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23718096' stroke-width='2.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}

select:focus,
input[type="text"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
}

textarea {
  resize: vertical;
  min-height: 72px;
}

.custom-input {
  margin-top: 8px;
}

.char-count {
  display: block;
  text-align: right;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ===== Chips ===== */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  padding: 8px 16px;
  font-size: 0.85rem;
  font-family: var(--font);
  font-weight: 500;
  border: 2px solid var(--border);
  border-radius: 100px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: all var(--transition);
  user-select: none;
}

.chip:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.chip.selected {
  background: var(--gradient);
  color: #fff;
  border-color: transparent;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  font-size: 0.9rem;
  font-family: var(--font);
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 2px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-icon {
  padding: 8px;
  background: transparent;
  color: var(--text-secondary);
  border-radius: 8px;
}

.btn-icon:hover {
  background: var(--bg);
  color: var(--primary);
}

.btn-small {
  padding: 6px 14px;
  font-size: 0.8rem;
  background: var(--gradient);
  color: #fff;
  border-radius: 6px;
}

.btn-generate {
  width: 100%;
  padding: 14px;
  font-size: 1rem;
  margin-top: 4px;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ===== Loading Dots ===== */
.typing-dots {
  display: inline-flex;
  gap: 4px;
  margin-right: 6px;
}

.typing-dots span {
  width: 6px;
  height: 6px;
  background: #fff;
  border-radius: 50%;
  animation: bounce 1.2s ease-in-out infinite;
}

.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-6px); }
}

/* ===== Result ===== */
.result-card {
  animation: slideUp 0.4s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.result-header h2 {
  margin-bottom: 0;
}

.result-actions {
  display: flex;
  gap: 4px;
}

.greeting-text {
  font-size: 1.05rem;
  line-height: 1.7;
  padding: 20px;
  background: var(--bg);
  border-radius: 8px;
  white-space: pre-wrap;
  word-wrap: break-word;
  min-height: 80px;
}

.greeting-text[contenteditable="true"] {
  outline: 2px dashed var(--primary);
  outline-offset: 2px;
}

.result-footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 20px;
}

.result-footer .btn {
  flex: 1;
}

/* ===== Share Panel ===== */
.share-panel {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  animation: slideUp 0.3s ease;
}

.share-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.share-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.share-btn {
  padding: 8px 16px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #fff;
  border-radius: 6px;
  text-decoration: none;
  transition: opacity var(--transition);
}

.share-btn:hover { opacity: 0.85; }

.whatsapp { background: #25D366; }
.telegram { background: #0088cc; }
.twitter { background: #1DA1F2; }
.email { background: #718096; }

.share-link-group {
  display: flex;
  gap: 8px;
}

.share-link-group input {
  flex: 1;
  font-size: 0.8rem;
  padding: 8px 12px;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  padding: 10px 24px;
  background: var(--text);
  color: var(--bg);
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  animation: toastIn 0.3s ease;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(10px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ===== Footer ===== */
footer {
  margin-top: auto;
  padding: 24px 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* ===== Error ===== */
.error-message {
  color: var(--error);
  font-size: 0.85rem;
  margin-top: 8px;
  padding: 10px 14px;
  background: rgba(245, 101, 101, 0.1);
  border-radius: 8px;
}

/* ===== Utilities ===== */
.hidden {
  display: none !important;
}

/* ===== Responsive ===== */
@media (max-width: 480px) {
  header {
    padding: 24px 0 20px;
  }

  header h1 {
    font-size: 1.5rem;
  }

  .card {
    padding: 20px;
    margin-top: 16px;
    border-radius: 8px;
  }

  .container {
    padding: 0 16px;
  }

  .result-footer {
    flex-direction: column;
  }

  .share-buttons {
    flex-wrap: wrap;
  }

  .share-btn {
    flex: 1;
    text-align: center;
    min-width: calc(50% - 4px);
  }

  .share-link-group {
    flex-direction: column;
  }
}