/**
 * Morse Code Directory Styles
 * All selectors prefixed with .mcd- to avoid theme conflicts
 */

/* =====================================================
   CSS Custom Properties (Scoped)
   ===================================================== */
.mcd-entry,
.mcd-archive {
    --mcd-primary: #2563eb;
    --mcd-primary-dark: #1d4ed8;
    --mcd-primary-light: #dbeafe;
    --mcd-success: #16a34a;
    --mcd-success-light: #dcfce7;
    --mcd-warning: #d97706;
    --mcd-warning-light: #fef3c7;
    --mcd-error: #dc2626;
    --mcd-error-light: #fee2e2;
    --mcd-text: #1f2937;
    --mcd-text-muted: #6b7280;
    --mcd-border: #e5e7eb;
    --mcd-bg: #ffffff;
    --mcd-bg-alt: #f9fafb;
    --mcd-radius: 8px;
    --mcd-radius-lg: 12px;
    --mcd-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --mcd-shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.1);
    --mcd-transition: 0.2s ease;
    --mcd-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --mcd-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
}

/* =====================================================
   Base Entry Styles
   ===================================================== */
.mcd-entry,
.mcd-archive {
    font-family: var(--mcd-font);
    color: var(--mcd-text);
    line-height: 1.6;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 16px;
}

.mcd-entry *,
.mcd-archive * {
    box-sizing: border-box;
}

/* =====================================================
   Hero Section
   ===================================================== */
.mcd-hero {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, var(--mcd-primary-light) 0%, var(--mcd-bg) 100%);
    border-radius: var(--mcd-radius-lg);
    margin-bottom: 32px;
}

.mcd-hero__character,
.mcd-hero__word {
    font-size: 72px;
    font-weight: 700;
    color: var(--mcd-primary);
    line-height: 1;
    margin-bottom: 16px;
}

.mcd-hero__word {
    font-size: 48px;
    letter-spacing: 0.05em;
}

.mcd-hero__pattern {
    font-size: 36px;
    letter-spacing: 0.2em;
    color: var(--mcd-text);
    margin-bottom: 8px;
}

.mcd-hero__morse-text {
    font-family: var(--mcd-font-mono);
    font-size: 18px;
    color: var(--mcd-text-muted);
    margin-bottom: 24px;
}

.mcd-hero__audio-controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.mcd-hero__category {
    margin-bottom: 12px;
}

.mcd-hero__difficulty {
    margin-bottom: 16px;
}

.mcd-hero__copy {
    margin-top: 12px;
}

/* =====================================================
   Buttons
   ===================================================== */
.mcd-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 500;
    font-family: var(--mcd-font);
    color: var(--mcd-text);
    background: var(--mcd-bg);
    border: 1px solid var(--mcd-border);
    border-radius: var(--mcd-radius);
    cursor: pointer;
    transition: all var(--mcd-transition);
    text-decoration: none;
}

.mcd-btn:hover {
    background: var(--mcd-bg-alt);
    border-color: var(--mcd-primary);
}

.mcd-btn:focus {
    outline: 2px solid var(--mcd-primary);
    outline-offset: 2px;
}

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

.mcd-btn--primary:hover {
    background: var(--mcd-primary-dark);
    border-color: var(--mcd-primary-dark);
}

.mcd-btn--small {
    padding: 6px 12px;
    font-size: 14px;
}

.mcd-btn__icon {
    font-size: 14px;
}

/* =====================================================
   Speed Selector
   ===================================================== */
.mcd-speed-selector {
    display: flex;
    align-items: center;
    gap: 8px;
}

.mcd-speed-selector label {
    font-size: 14px;
    color: var(--mcd-text-muted);
}

.mcd-speed-select {
    padding: 8px 12px;
    font-size: 14px;
    font-family: var(--mcd-font);
    border: 1px solid var(--mcd-border);
    border-radius: var(--mcd-radius);
    background: var(--mcd-bg);
    cursor: pointer;
}

/* =====================================================
   Sections
   ===================================================== */
.mcd-section {
    margin-bottom: 40px;
    padding: 24px;
    background: var(--mcd-bg);
    border: 1px solid var(--mcd-border);
    border-radius: var(--mcd-radius-lg);
}

.mcd-section__title {
    font-size: 20px;
    font-weight: 600;
    color: var(--mcd-text);
    margin: 0 0 16px 0;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--mcd-primary-light);
}

/* =====================================================
   Pattern Breakdown
   ===================================================== */
.mcd-pattern-visual {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-bottom: 20px;
}

.mcd-pattern-element {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.mcd-pattern-element__bar {
    height: 40px;
    border-radius: 4px;
    background: var(--mcd-primary);
}

.mcd-pattern-element--dit .mcd-pattern-element__bar {
    width: 20px;
}

.mcd-pattern-element--dah .mcd-pattern-element__bar {
    width: 60px;
}

.mcd-pattern-element__label {
    font-size: 12px;
    color: var(--mcd-text-muted);
}

.mcd-pattern-element__play {
    padding: 4px 8px;
    font-size: 12px;
    background: var(--mcd-bg-alt);
    border: 1px solid var(--mcd-border);
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--mcd-transition);
}

.mcd-pattern-element__play:hover {
    background: var(--mcd-primary-light);
}

.mcd-pattern-info {
    text-align: center;
    color: var(--mcd-text-muted);
    font-size: 14px;
    margin: 0;
}

/* =====================================================
   Mnemonic
   ===================================================== */
.mcd-mnemonic__content {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 20px;
    background: var(--mcd-bg-alt);
    border-radius: var(--mcd-radius);
    margin-bottom: 16px;
}

.mcd-mnemonic__char {
    font-size: 48px;
    font-weight: 700;
    color: var(--mcd-primary);
    flex-shrink: 0;
}

.mcd-mnemonic__text p {
    font-size: 18px;
    margin: 0;
}

.mcd-mnemonic__tip {
    font-size: 14px;
    color: var(--mcd-text-muted);
    margin: 0;
}

/* =====================================================
   Warning (Confusing Pairs)
   ===================================================== */
.mcd-warning__item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--mcd-warning-light);
    border-radius: var(--mcd-radius);
    margin-bottom: 12px;
}

.mcd-warning__item:last-child {
    margin-bottom: 0;
}

.mcd-warning__link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: inherit;
    flex-shrink: 0;
}

.mcd-warning__link:hover .mcd-warning__char {
    color: var(--mcd-primary);
}

.mcd-warning__char {
    font-size: 32px;
    font-weight: 700;
    transition: color var(--mcd-transition);
}

.mcd-warning__pattern {
    font-size: 18px;
    letter-spacing: 0.1em;
}

.mcd-warning__note {
    font-size: 14px;
    color: var(--mcd-text-muted);
    margin: 0;
}

/* =====================================================
   Practice Widget
   ===================================================== */
.mcd-practice__intro {
    color: var(--mcd-text-muted);
    margin-bottom: 20px;
}

.mcd-practice__widget {
    text-align: center;
}

.mcd-practice__target {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding: 16px;
    background: var(--mcd-bg-alt);
    border-radius: var(--mcd-radius);
}

.mcd-practice__target-label {
    font-size: 14px;
    color: var(--mcd-text-muted);
}

.mcd-practice__target-pattern {
    font-size: 24px;
    letter-spacing: 0.15em;
}

.mcd-practice__progress {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 16px;
}

.mcd-practice__progress-letter {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    background: var(--mcd-bg-alt);
    border: 2px solid var(--mcd-border);
    border-radius: var(--mcd-radius);
    transition: all var(--mcd-transition);
}

.mcd-practice__progress-letter.mcd-progress--active {
    border-color: var(--mcd-primary);
    background: var(--mcd-primary-light);
}

.mcd-practice__progress-letter.mcd-progress--complete {
    border-color: var(--mcd-success);
    background: var(--mcd-success-light);
}

.mcd-practice__input-area {
    margin-bottom: 20px;
}

.mcd-practice__tap-btn {
    width: 200px;
    height: 200px;
    font-size: 20px;
    font-weight: 600;
    font-family: var(--mcd-font);
    color: var(--mcd-primary);
    background: var(--mcd-primary-light);
    border: 3px solid var(--mcd-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--mcd-transition);
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
}

.mcd-practice__tap-btn:hover {
    background: var(--mcd-primary);
    color: #fff;
}

.mcd-practice__tap-btn:active,
.mcd-practice__tap-btn.mcd-tap--active {
    transform: scale(0.95);
    background: var(--mcd-primary-dark);
    color: #fff;
}

.mcd-practice__tap-btn--large {
    width: 240px;
    height: 240px;
}

.mcd-practice__feedback {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    min-height: 60px;
}

.mcd-practice__your-input {
    font-size: 14px;
    color: var(--mcd-text-muted);
}

.mcd-practice__output {
    font-size: 20px;
    letter-spacing: 0.1em;
    color: var(--mcd-text);
    min-width: 100px;
    display: inline-block;
}

.mcd-practice__result {
    font-size: 16px;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: var(--mcd-radius);
}

.mcd-practice__result.mcd-result--correct {
    color: var(--mcd-success);
    background: var(--mcd-success-light);
}

.mcd-practice__result.mcd-result--incorrect {
    color: var(--mcd-error);
    background: var(--mcd-error-light);
}

.mcd-practice__controls {
    display: flex;
    justify-content: center;
    gap: 12px;
}

/* =====================================================
   Quiz Widget
   ===================================================== */
.mcd-quiz__widget {
    text-align: center;
}

.mcd-quiz__question {
    font-size: 18px;
    margin-bottom: 20px;
}

.mcd-quiz__question strong {
    font-size: 24px;
    letter-spacing: 0.15em;
}

.mcd-quiz__options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    max-width: 300px;
    margin: 0 auto 20px;
}

.mcd-quiz__option {
    padding: 16px;
    font-size: 24px;
    font-weight: 600;
    font-family: var(--mcd-font);
    background: var(--mcd-bg);
    border: 2px solid var(--mcd-border);
    border-radius: var(--mcd-radius);
    cursor: pointer;
    transition: all var(--mcd-transition);
}

.mcd-quiz__option:hover {
    border-color: var(--mcd-primary);
    background: var(--mcd-primary-light);
}

.mcd-quiz__option.mcd-quiz--correct {
    border-color: var(--mcd-success);
    background: var(--mcd-success-light);
}

.mcd-quiz__option.mcd-quiz--incorrect {
    border-color: var(--mcd-error);
    background: var(--mcd-error-light);
}

.mcd-quiz__option:disabled {
    cursor: default;
    opacity: 0.7;
}

.mcd-quiz__feedback {
    min-height: 40px;
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 16px;
}

.mcd-quiz__feedback.mcd-feedback--correct {
    color: var(--mcd-success);
}

.mcd-quiz__feedback.mcd-feedback--incorrect {
    color: var(--mcd-error);
}

/* =====================================================
   Related Words
   ===================================================== */
.mcd-related-words__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
}

.mcd-related-words__item {
    display: flex;
    flex-direction: column;
    padding: 16px;
    background: var(--mcd-bg-alt);
    border: 1px solid var(--mcd-border);
    border-radius: var(--mcd-radius);
    text-decoration: none;
    color: inherit;
    transition: all var(--mcd-transition);
}

.mcd-related-words__item:hover {
    border-color: var(--mcd-primary);
    transform: translateY(-2px);
    box-shadow: var(--mcd-shadow);
}

.mcd-related-words__word {
    font-weight: 600;
    color: var(--mcd-primary);
    margin-bottom: 4px;
}

.mcd-related-words__pattern {
    font-size: 14px;
    color: var(--mcd-text-muted);
    letter-spacing: 0.1em;
}

/* =====================================================
   Navigation
   ===================================================== */
.mcd-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: var(--mcd-bg-alt);
    border-radius: var(--mcd-radius-lg);
    margin-bottom: 32px;
}

.mcd-navigation__prev,
.mcd-navigation__next {
    flex: 1;
}

.mcd-navigation__next {
    text-align: right;
}

.mcd-navigation__center {
    flex: 1;
    text-align: center;
}

.mcd-navigation__link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    text-decoration: none;
    color: var(--mcd-text);
    background: var(--mcd-bg);
    border: 1px solid var(--mcd-border);
    border-radius: var(--mcd-radius);
    transition: all var(--mcd-transition);
}

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

.mcd-navigation__char {
    font-size: 24px;
    font-weight: 700;
}

.mcd-navigation__arrow {
    font-size: 18px;
}

.mcd-navigation__all {
    display: inline-block;
    padding: 12px 24px;
    text-decoration: none;
    color: var(--mcd-primary);
    font-weight: 500;
}

.mcd-navigation__all:hover {
    text-decoration: underline;
}

/* =====================================================
   Internal Links
   ===================================================== */
.mcd-internal-links__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.mcd-internal-links__item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--mcd-bg-alt);
    border: 1px solid var(--mcd-border);
    border-radius: var(--mcd-radius);
    text-decoration: none;
    color: inherit;
    transition: all var(--mcd-transition);
}

.mcd-internal-links__item:hover {
    border-color: var(--mcd-primary);
    background: var(--mcd-primary-light);
}

.mcd-internal-links__icon {
    font-size: 24px;
}

.mcd-internal-links__text {
    font-weight: 500;
}

/* =====================================================
   Tables
   ===================================================== */
.mcd-table-wrapper {
    overflow-x: auto;
}

.mcd-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.mcd-table th,
.mcd-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--mcd-border);
}

.mcd-table th {
    font-weight: 600;
    background: var(--mcd-bg-alt);
}

.mcd-table tbody tr:hover {
    background: var(--mcd-bg-alt);
}

.mcd-table__row--active {
    background: var(--mcd-primary-light) !important;
}

.mcd-table a {
    color: var(--mcd-primary);
    text-decoration: none;
}

.mcd-table a:hover {
    text-decoration: underline;
}

.mcd-table code {
    font-family: var(--mcd-font-mono);
    font-size: 13px;
    padding: 2px 6px;
    background: var(--mcd-bg-alt);
    border-radius: 4px;
}

/* =====================================================
   Letter Breakdown (Word Page)
   ===================================================== */
.mcd-letter-breakdown__visual {
    font-size: 18px;
    letter-spacing: 0.15em;
}

.mcd-letter-link {
    color: var(--mcd-primary);
    text-decoration: none;
    font-size: 20px;
}

.mcd-letter-link:hover {
    text-decoration: underline;
}

/* =====================================================
   Timing Visualization
   ===================================================== */
.mcd-timing__intro {
    color: var(--mcd-text-muted);
    margin-bottom: 20px;
}

.mcd-timing__visualization {
    padding: 24px;
    background: var(--mcd-bg-alt);
    border-radius: var(--mcd-radius);
    overflow-x: auto;
}

.mcd-timing__timeline {
    display: flex;
    align-items: flex-end;
    gap: 0;
    min-width: max-content;
}

.mcd-timing__letter-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.mcd-timing__letter-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--mcd-text-muted);
}

.mcd-timing__elements {
    display: flex;
    align-items: center;
    gap: 4px;
}

.mcd-timing__element {
    height: 24px;
    background: var(--mcd-primary);
    border-radius: 2px;
}

.mcd-timing__element--dit {
    width: 12px;
}

.mcd-timing__element--dah {
    width: 36px;
}

.mcd-timing__gap--element {
    width: 4px;
}

.mcd-timing__letter-gap {
    width: 24px;
    flex-shrink: 0;
}

.mcd-timing__legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
    margin-top: 20px;
    font-size: 13px;
    color: var(--mcd-text-muted);
}

.mcd-timing__legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.mcd-timing__legend-dit,
.mcd-timing__legend-dah {
    height: 12px;
    background: var(--mcd-primary);
    border-radius: 2px;
}

.mcd-timing__legend-dit {
    width: 12px;
}

.mcd-timing__legend-dah {
    width: 36px;
}

.mcd-timing__legend-gap {
    width: 24px;
    height: 12px;
    background: var(--mcd-border);
    border-radius: 2px;
}

/* =====================================================
   Context Block
   ===================================================== */
.mcd-context__content {
    padding: 20px;
    background: var(--mcd-bg-alt);
    border-left: 4px solid var(--mcd-primary);
    border-radius: 0 var(--mcd-radius) var(--mcd-radius) 0;
}

.mcd-context__content p {
    margin: 0;
    line-height: 1.7;
}

/* =====================================================
   Number Rule Overview
   ===================================================== */
.mcd-number-rule__content p {
    margin-bottom: 16px;
}

.mcd-number-rule__visual {
    display: flex;
    gap: 24px;
    padding: 16px;
    background: var(--mcd-bg-alt);
    border-radius: var(--mcd-radius);
}

.mcd-number-rule__row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.mcd-number-rule__label {
    font-weight: 500;
}

.mcd-number-rule__count {
    font-size: 24px;
    font-weight: 700;
    color: var(--mcd-primary);
}

/* =====================================================
   Use Cases
   ===================================================== */
.mcd-use-cases__list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.mcd-use-cases__list li {
    padding: 12px 16px;
    border-bottom: 1px solid var(--mcd-border);
}

.mcd-use-cases__list li:last-child {
    border-bottom: none;
}

/* =====================================================
   Badges
   ===================================================== */
.mcd-category-badge,
.mcd-difficulty {
    display: inline-block;
    padding: 4px 12px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 20px;
    text-decoration: none;
}

.mcd-category-badge--emergency {
    background: #fecaca;
    color: #991b1b;
}

.mcd-category-badge--ham-radio {
    background: #dbeafe;
    color: #1e40af;
}

.mcd-category-badge--prosigns {
    background: #fef3c7;
    color: #92400e;
}

.mcd-category-badge--common {
    background: #d1fae5;
    color: #065f46;
}

.mcd-category-badge--military {
    background: #e5e7eb;
    color: #374151;
}

.mcd-difficulty--easy {
    background: var(--mcd-success-light);
    color: var(--mcd-success);
}

.mcd-difficulty--medium {
    background: var(--mcd-warning-light);
    color: var(--mcd-warning);
}

.mcd-difficulty--hard {
    background: var(--mcd-error-light);
    color: var(--mcd-error);
}

/* =====================================================
   Archive Pages
   ===================================================== */
.mcd-archive__header {
    text-align: center;
    margin-bottom: 32px;
}

.mcd-archive__title {
    font-size: 32px;
    font-weight: 700;
    color: var(--mcd-text);
    margin: 0 0 12px 0;
}

.mcd-archive__intro {
    font-size: 18px;
    color: var(--mcd-text-muted);
    max-width: 700px;
    margin: 0 auto;
}

.mcd-archive__section {
    margin-top: 48px;
}

.mcd-archive__section h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 20px;
}

.mcd-archive__empty {
    text-align: center;
    color: var(--mcd-text-muted);
    padding: 40px;
}

/* Letters Grid */
.mcd-letters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 16px;
}

.mcd-letter-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 16px;
    background: var(--mcd-bg);
    border: 1px solid var(--mcd-border);
    border-radius: var(--mcd-radius);
    text-decoration: none;
    color: inherit;
    transition: all var(--mcd-transition);
}

.mcd-letter-card:hover {
    border-color: var(--mcd-primary);
    transform: translateY(-4px);
    box-shadow: var(--mcd-shadow-lg);
}

.mcd-letter-card__char {
    font-size: 36px;
    font-weight: 700;
    color: var(--mcd-primary);
    line-height: 1;
    margin-bottom: 8px;
}

.mcd-letter-card__pattern {
    font-size: 16px;
    letter-spacing: 0.1em;
    margin-bottom: 4px;
}

.mcd-letter-card__morse {
    font-family: var(--mcd-font-mono);
    font-size: 12px;
    color: var(--mcd-text-muted);
}

.mcd-letter-card__play {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    padding: 0;
    font-size: 12px;
    background: var(--mcd-bg-alt);
    border: 1px solid var(--mcd-border);
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--mcd-transition);
}

.mcd-letter-card:hover .mcd-letter-card__play {
    opacity: 1;
}

.mcd-letter-card__play:hover {
    background: var(--mcd-primary-light);
}

/* Numbers Grid */
.mcd-numbers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 16px;
}

.mcd-number-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 24px 16px;
    background: var(--mcd-bg);
    border: 1px solid var(--mcd-border);
    border-radius: var(--mcd-radius);
    text-decoration: none;
    color: inherit;
    transition: all var(--mcd-transition);
}

.mcd-number-card:hover {
    border-color: var(--mcd-primary);
    transform: translateY(-4px);
    box-shadow: var(--mcd-shadow-lg);
}

.mcd-number-card__char {
    font-size: 42px;
    font-weight: 700;
    color: var(--mcd-primary);
    line-height: 1;
    margin-bottom: 12px;
}

.mcd-number-card__pattern {
    font-size: 18px;
    letter-spacing: 0.1em;
    margin-bottom: 4px;
}

.mcd-number-card__morse {
    font-family: var(--mcd-font-mono);
    font-size: 12px;
    color: var(--mcd-text-muted);
}

.mcd-number-card__play {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    padding: 0;
    font-size: 12px;
    background: var(--mcd-bg-alt);
    border: 1px solid var(--mcd-border);
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--mcd-transition);
}

.mcd-number-card:hover .mcd-number-card__play {
    opacity: 1;
}

/* Words Grid */
.mcd-words-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.mcd-word-card {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 20px;
    background: var(--mcd-bg);
    border: 1px solid var(--mcd-border);
    border-radius: var(--mcd-radius);
    text-decoration: none;
    color: inherit;
    transition: all var(--mcd-transition);
}

.mcd-word-card:hover {
    border-color: var(--mcd-primary);
    transform: translateY(-4px);
    box-shadow: var(--mcd-shadow-lg);
}

.mcd-word-card__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
}

.mcd-word-card__word {
    font-size: 20px;
    font-weight: 700;
    color: var(--mcd-primary);
}

.mcd-word-card__category {
    font-size: 10px;
    padding: 2px 8px;
}

.mcd-word-card__pattern {
    font-size: 14px;
    color: var(--mcd-text-muted);
    letter-spacing: 0.1em;
    margin-bottom: 8px;
    word-break: break-all;
}

.mcd-word-card__difficulty {
    align-self: flex-start;
}

.mcd-word-card__play {
    position: absolute;
    bottom: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    padding: 0;
    font-size: 14px;
    background: var(--mcd-bg-alt);
    border: 1px solid var(--mcd-border);
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--mcd-transition);
}

.mcd-word-card:hover .mcd-word-card__play {
    opacity: 1;
}

/* Category Filter */
.mcd-category-filter {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    padding: 16px;
    background: var(--mcd-bg-alt);
    border-radius: var(--mcd-radius);
}

.mcd-category-filter__label {
    font-weight: 500;
    color: var(--mcd-text-muted);
}

.mcd-category-filter__buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.mcd-category-filter__btn {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    color: var(--mcd-text);
    background: var(--mcd-bg);
    border: 1px solid var(--mcd-border);
    border-radius: var(--mcd-radius);
    transition: all var(--mcd-transition);
}

.mcd-category-filter__btn:hover {
    border-color: var(--mcd-primary);
}

.mcd-category-filter__btn--active {
    color: #fff;
    background: var(--mcd-primary);
    border-color: var(--mcd-primary);
}

/* Category Cards */
.mcd-categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.mcd-category-card {
    padding: 24px;
    background: var(--mcd-bg);
    border: 2px solid var(--mcd-border);
    border-radius: var(--mcd-radius-lg);
    text-decoration: none;
    color: inherit;
    transition: all var(--mcd-transition);
}

.mcd-category-card:hover {
    border-color: var(--mcd-primary);
    transform: translateY(-4px);
    box-shadow: var(--mcd-shadow-lg);
}

.mcd-category-card--emergency {
    border-left: 4px solid #dc2626;
}

.mcd-category-card--ham-radio {
    border-left: 4px solid #2563eb;
}

.mcd-category-card--prosigns {
    border-left: 4px solid #d97706;
}

.mcd-category-card--common {
    border-left: 4px solid #16a34a;
}

.mcd-category-card--military {
    border-left: 4px solid #6b7280;
}

.mcd-category-card__title {
    font-size: 18px;
    font-weight: 600;
    margin: 0 0 8px 0;
}

.mcd-category-card__count {
    font-size: 14px;
    color: var(--mcd-text-muted);
    margin: 0 0 12px 0;
}

.mcd-category-card__desc {
    font-size: 14px;
    color: var(--mcd-text-muted);
    margin: 0;
    line-height: 1.5;
}

/* =====================================================
   Tips Section
   ===================================================== */
.mcd-tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.mcd-tip {
    padding: 20px;
    background: var(--mcd-bg-alt);
    border-radius: var(--mcd-radius);
}

.mcd-tip h3 {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 8px 0;
    color: var(--mcd-primary);
}

.mcd-tip p {
    font-size: 14px;
    color: var(--mcd-text-muted);
    margin: 0;
    line-height: 1.5;
}

/* Number Rule Overview (Archive) */
.mcd-number-rule-overview__content {
    padding: 24px;
    background: var(--mcd-bg-alt);
    border-radius: var(--mcd-radius-lg);
}

.mcd-number-rule-overview__content p {
    margin: 0 0 16px 0;
}

.mcd-number-rule-overview__content p:last-child {
    margin-bottom: 0;
}

.mcd-number-rule-overview__list {
    margin: 16px 0;
    padding-left: 24px;
}

.mcd-number-rule-overview__list li {
    margin-bottom: 8px;
}

/* =====================================================
   Copy Button
   ===================================================== */
.mcd-copy-morse {
    background: var(--mcd-bg);
}

.mcd-copy-morse.mcd-copied {
    background: var(--mcd-success-light);
    border-color: var(--mcd-success);
    color: var(--mcd-success);
}

/* =====================================================
   Responsive
   ===================================================== */
@media (max-width: 768px) {
    .mcd-hero__character,
    .mcd-hero__word {
        font-size: 48px;
    }
    
    .mcd-hero__word {
        font-size: 36px;
    }
    
    .mcd-hero__pattern {
        font-size: 24px;
    }
    
    .mcd-hero__audio-controls {
        flex-direction: column;
    }
    
    .mcd-section {
        padding: 16px;
    }
    
    .mcd-practice__tap-btn {
        width: 160px;
        height: 160px;
        font-size: 16px;
    }
    
    .mcd-practice__tap-btn--large {
        width: 180px;
        height: 180px;
    }
    
    .mcd-mnemonic__content {
        flex-direction: column;
        text-align: center;
    }
    
    .mcd-navigation {
        flex-direction: column;
        gap: 16px;
    }
    
    .mcd-navigation__prev,
    .mcd-navigation__center,
    .mcd-navigation__next {
        text-align: center;
    }
    
    .mcd-letters-grid {
        grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
        gap: 12px;
    }
    
    .mcd-letter-card {
        padding: 16px 12px;
    }
    
    .mcd-letter-card__char {
        font-size: 28px;
    }
    
    .mcd-letter-card__play {
        opacity: 1;
    }
    
    .mcd-number-card__play,
    .mcd-word-card__play {
        opacity: 1;
    }
    
    .mcd-category-filter {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .mcd-warning__item {
        flex-direction: column;
        text-align: center;
    }
    
    .mcd-number-rule__visual {
        flex-direction: column;
        gap: 12px;
    }
    
    .mcd-archive__title {
        font-size: 24px;
    }
    
    .mcd-archive__intro {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .mcd-quiz__options {
        grid-template-columns: 1fr 1fr;
        max-width: 100%;
    }
    
    .mcd-internal-links__grid {
        grid-template-columns: 1fr;
    }
    
    .mcd-related-words__grid {
        grid-template-columns: 1fr;
    }
}