:root {
  --bg-color: #FAF9F5;
  --card-bg: #FFFFFF;
  --border-color: #E8E5DE;
  --text-main: #22211F;
  --text-muted: #736F68;
  --text-subtle: #A39E96;
  --primary: #CC5A37;
  --primary-hover: #B84B2B;
  --primary-active: #9E3E22;
  --secondary-bg: #F0EDE6;
  --secondary-hover: #E5E0D6;
  --secondary-text: #22211F;
  --input-bg: #FFFFFF;
  --input-border: #E2DDD5;
  --input-focus-ring: rgba(204, 90, 55, 0.18);
  --tag-bg: #F3EFE8;
  --tag-text: #736F68;
  --font-serif: "Tiempos Headline", "Canela", "Newsreader", "Charter", "Georgia", "Cambria", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, Monaco, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: #181716;
    --card-bg: #242321;
    --border-color: #383633;
    --text-main: #ECEAE4;
    --text-muted: #A39E95;
    --text-subtle: #6E6A63;
    --primary: #DA7756;
    --primary-hover: #E58869;
    --primary-active: #C46747;
    --secondary-bg: #2E2C29;
    --secondary-hover: #3B3935;
    --secondary-text: #ECEAE4;
    --input-bg: #1C1B19;
    --input-border: #383633;
    --input-focus-ring: rgba(218, 119, 86, 0.2);
    --tag-bg: #2E2C29;
    --tag-text: #A39E95;
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-sans);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  width: 100%;
  max-width: 580px;
}

.header {
  text-align: center;
  margin-bottom: 2rem;
}

.logo {
  font-family: var(--font-serif);
  font-size: 2.1rem;
  font-weight: 500;
  letter-spacing: -0.025em;
  color: var(--text-main);
}

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: 0 1px 3px rgba(35, 31, 28, 0.04), 0 8px 24px -4px rgba(35, 31, 28, 0.04);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

/* Card Header */
.card-header {
  margin-bottom: 1.25rem;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--text-main);
  margin-bottom: 0.35rem;
}

.card-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Composer / Create View */
.composer-container {
  display: flex;
  flex-direction: column;
}

#secret-input {
  width: 100%;
  min-height: 150px;
  padding: 1.25rem 1.25rem 0.75rem;
  border: none;
  background: transparent;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  line-height: 1.6;
  resize: vertical;
}

#secret-input::placeholder {
  color: var(--text-subtle);
}

#secret-input:focus {
  outline: none;
}

.composer-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem 1rem;
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.composer-options {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.select-wrapper {
  position: relative;
}

select {
  appearance: none;
  -webkit-appearance: none;
  background-color: var(--secondary-bg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23736F68' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.65rem center;
  background-size: 10px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.45rem 1.75rem 0.45rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 500;
  font-family: inherit;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
}

select:hover {
  background-color: var(--secondary-hover);
  color: var(--text-main);
}

select:focus-visible {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--input-focus-ring);
}

.toggle-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.45rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background-color: var(--secondary-bg);
  user-select: none;
  transition: all 0.15s ease;
}

.toggle-label:hover {
  background-color: var(--secondary-hover);
  color: var(--text-main);
}

.toggle-label input[type="checkbox"] {
  accent-color: var(--primary);
  cursor: pointer;
  width: 14px;
  height: 14px;
}

.pwd-drawer {
  padding: 0 1.25rem 1.25rem;
}

input[type="password"],
input[type="text"] {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background-color: var(--input-bg);
  color: var(--text-main);
  font-size: 0.9rem;
  font-family: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input[type="password"]::placeholder,
input[type="text"]::placeholder {
  color: var(--text-subtle);
}

input[type="password"]:focus,
input[type="text"]:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--input-focus-ring);
}

/* Common Section Padding */
#success-view,
#reveal-view {
  padding: 1.75rem;
}

.link-box {
  margin-bottom: 1.25rem;
}

.link-box input[type="text"] {
  background-color: var(--secondary-bg);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-main);
}

.form-group {
  margin-bottom: 1.25rem;
}

#revealed-secret {
  width: 100%;
  min-height: 140px;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background-color: var(--secondary-bg);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  resize: vertical;
}

#revealed-secret:focus {
  outline: none;
  border-color: var(--primary);
}

/* Status Pill */
.status-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 500;
  background-color: var(--tag-bg);
  color: var(--tag-text);
  border: 1px solid var(--border-color);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.15rem;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: inherit;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-0.5px);
}

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

.btn-primary:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--input-focus-ring);
}

.btn-secondary {
  background-color: var(--secondary-bg);
  color: var(--secondary-text);
  border-color: var(--border-color);
}

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

.btn-secondary:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--input-focus-ring);
}

.btn-block {
  width: 100%;
  padding: 0.75rem 1.25rem;
  font-size: 0.95rem;
}

.btn-group {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

/* Error State */
.error-state {
  text-align: center;
  padding: 1rem 0 0.5rem;
}

.field-error {
  color: var(--primary);
  font-size: 0.8125rem;
  margin-top: 0.5rem;
  line-height: 1.4;
}

.create-error {
  padding: 0 1.25rem 0.9rem;
  margin-top: -0.25rem;
}

input.input-error {
  border-color: var(--primary) !important;
  box-shadow: 0 0 0 3px var(--input-focus-ring) !important;
  animation: shake 0.28s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 480px) {
  body {
    padding: 1.25rem 0.75rem;
  }

  .composer-footer {
    flex-direction: column;
    align-items: stretch;
  }

  .composer-options {
    width: 100%;
  }

  .select-wrapper,
  select,
  .toggle-label {
    flex: 1;
  }

  #btn-create {
    width: 100%;
  }

  .btn-group {
    flex-direction: column;
  }

  .btn-group .btn {
    width: 100%;
  }
}