/* ========================================
   AI Secure Paste - Windows XP Style
   ======================================== */

/* ========================================
   CSS Variables (Windows XP Luna Theme)
   ======================================== */
:root {
    /* XP Luna Colors */
    --xp-title-bar-top: #0058EE;
    --xp-title-bar-bottom: #3285FF;
    --xp-bg-main: #ECE9D8;
    /* あの懐かしいベージュ */
    --xp-window-bg: #FFFFFF;
    --xp-button-green-top: #4CAF50;
    --xp-button-green-bottom: #2E7D32;
    --xp-button-green-border: #1B5E20;
    --xp-button-gray-top: #F9F9F9;
    --xp-button-gray-bottom: #D5D5D5;
    --xp-button-gray-border: #999999;
    --xp-text: #222222;
    --xp-border: #0058EE;
    --xp-shadow: rgba(0, 0, 0, 0.3);

    /* Typography */
    --font-xp: "MS UI Gothic", "Meiryo", "Hiragino Kaku Gothic ProN", sans-serif;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

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

html {
    font-size: 16px;
}

body {
    font-family: var(--font-xp);
    font-size: var(--font-size-base);
    line-height: 1.8;
    color: var(--xp-text);
    background-color: var(--xp-bg-main);
    background-image:
        linear-gradient(45deg, #E0DDD5 25%, transparent 25%),
        linear-gradient(-45deg, #E0DDD5 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #E0DDD5 75%),
        linear-gradient(-45deg, transparent 75%, #E0DDD5 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

/* ========================================
   Container
   ======================================== */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* ========================================
   XP Window Structure
   ======================================== */
.xp-window {
    background-color: var(--xp-window-bg);
    border: 3px solid var(--xp-border);
    border-radius: 8px 8px 0 0;
    box-shadow: 4px 4px 10px var(--xp-shadow);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
}

.xp-titlebar {
    background: linear-gradient(to bottom, var(--xp-title-bar-top), var(--xp-title-bar-bottom));
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.xp-titlebar-text {
    color: white;
    font-weight: bold;
    font-size: var(--font-size-lg);
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.xp-titlebar-buttons {
    display: flex;
    gap: var(--spacing-xs);
}

.xp-titlebar-buttons span {
    width: 21px;
    height: 21px;
    background: linear-gradient(to bottom, #F0F0F0, #D0D0D0);
    border: 1px solid #999;
    border-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    color: #000;
    cursor: default;
    user-select: none;
}

.xp-btn-close {
    background: linear-gradient(to bottom, #FF6B6B, #DC3545) !important;
    color: white !important;
}

.xp-content {
    padding: var(--spacing-lg);
}

/* ========================================
   Instruction Box
   ======================================== */
.instruction-box {
    background: linear-gradient(to bottom, #FFFFCC, #FFFFAA);
    border: 2px solid #CCCC99;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border-radius: 4px;
}

.instruction-title {
    font-size: var(--font-size-xl);
    font-weight: bold;
    color: #333;
    margin-bottom: var(--spacing-sm);
}

.instruction-list {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.instruction-list li {
    margin-bottom: var(--spacing-xs);
}

.instruction-note {
    background-color: #E8F4F8;
    border-left: 4px solid #0078D7;
    padding: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    font-size: 14px;
    line-height: 1.6;
}

/* ========================================
   Control Panel
   ======================================== */
.control-panel {
    background: linear-gradient(to bottom, #F0F0F0, #E0E0E0);
    border: 2px groove #999;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.mode-selector {
    margin-bottom: var(--spacing-md);
}

.mode-label {
    font-weight: bold;
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    display: block;
}

.mode-select {
    width: 100%;
    padding: var(--spacing-sm);
    font-size: var(--font-size-base);
    font-family: var(--font-xp);
    border: 2px inset #999;
    background-color: white;
    color: var(--xp-text);
}

.button-group {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* ========================================
   XP Style Buttons (3D)
   ======================================== */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-lg);
    font-weight: bold;
    font-family: var(--font-xp);
    border: 2px outset #fff;
    cursor: pointer;
    user-select: none;
    box-shadow: 1px 1px 0 rgba(0, 0, 0, 0.2);
    min-width: 120px;
}

.btn:active {
    border-style: inset;
    box-shadow: inset 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.btn-primary {
    background: linear-gradient(to bottom, var(--xp-button-green-top), var(--xp-button-green-bottom));
    color: white;
    border-color: var(--xp-button-green-border);
    text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background: linear-gradient(to bottom, var(--xp-button-gray-top), var(--xp-button-gray-bottom));
    color: var(--xp-text);
    border-color: var(--xp-button-gray-border);
}

.btn-accent {
    background: linear-gradient(to bottom, #4A90E2, #2E5C8A);
    color: white;
    border-color: #1E3A5F;
    text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.3);
}

.btn-copy {
    background: linear-gradient(to bottom, #F0F0F0, #D0D0D0);
    color: var(--xp-text);
    border: 2px outset #999;
    padding: 4px 12px;
    font-size: 14px;
    font-weight: normal;
    cursor: pointer;
}

.btn-copy:active {
    border-style: inset;
}

/* ========================================
   Processing Area
   ======================================== */
.processing-area {
    margin-bottom: var(--spacing-lg);
}

.area-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.area-card {
    background: linear-gradient(to bottom, #F5F5F5, #E8E8E8);
    border: 2px groove #999;
    padding: var(--spacing-md);
}

.area-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.area-title {
    font-size: var(--font-size-lg);
    font-weight: bold;
    color: var(--xp-text);
}

.area-textarea {
    width: 100%;
    min-height: 300px;
    padding: var(--spacing-sm);
    font-size: var(--font-size-base);
    font-family: var(--font-xp);
    line-height: 1.6;
    border: 2px inset #999;
    background-color: white;
    color: var(--xp-text);
    resize: vertical;
}

.area-textarea:focus {
    outline: 1px dotted #000;
    outline-offset: -3px;
}

/* ========================================
   XP GroupBox (AdSense Container)
   ======================================== */
.xp-groupbox {
    border: 2px groove #999;
    padding: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    background: linear-gradient(to bottom, #FAFAFA, #F0F0F0);
    position: relative;
}

.xp-groupbox-title {
    position: absolute;
    top: -12px;
    left: var(--spacing-md);
    background: var(--xp-bg-main);
    padding: 0 var(--spacing-sm);
    font-weight: bold;
    color: var(--xp-text);
}

.xp-groupbox-content {
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
}

/* ========================================
   Restore Section
   ======================================== */
.restore-section {
    margin-bottom: var(--spacing-lg);
    display: none;
}

.restore-section.active {
    display: block;
}

.restore-card {
    background: linear-gradient(to bottom, #E8F5E9, #C8E6C9);
    border: 3px solid var(--xp-button-green-border);
    padding: var(--spacing-lg);
}

.restore-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.restore-title {
    font-size: var(--font-size-xl);
    font-weight: bold;
    color: var(--xp-text);
}

.restore-description {
    color: #333;
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.restore-textarea {
    width: 100%;
    min-height: 150px;
    padding: var(--spacing-sm);
    font-size: var(--font-size-base);
    font-family: var(--font-xp);
    line-height: 1.6;
    border: 2px inset #999;
    background-color: white;
    color: var(--xp-text);
    resize: vertical;
    margin-bottom: var(--spacing-md);
}

.restore-output-wrapper {
    margin-top: var(--spacing-md);
}

.restore-output-title {
    font-size: var(--font-size-lg);
    font-weight: bold;
    margin-bottom: var(--spacing-sm);
}

/* ========================================
   Features Section
   ======================================== */
.features {
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: bold;
    color: var(--xp-text);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    text-shadow: 1px 1px 0 rgba(255, 255, 255, 0.8);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    background: linear-gradient(to bottom, #FFFFFF, #F0F0F0);
    border: 2px groove #999;
    padding: var(--spacing-md);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-sm);
}

.feature-title {
    font-size: var(--font-size-lg);
    font-weight: bold;
    color: var(--xp-text);
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    font-size: 14px;
    color: #555;
    line-height: 1.7;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: linear-gradient(to bottom, #4A90E2, #2E5C8A);
    color: white;
    padding: var(--spacing-md) 0;
    margin-top: var(--spacing-xl);
    border-top: 3px solid #1E3A5F;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-text {
    font-size: 14px;
}

.footer-nav {
    display: flex;
    gap: var(--spacing-md);
}

.footer-link {
    color: white;
    text-decoration: underline;
    font-size: 14px;
}

.footer-link:hover {
    color: #FFD700;
}

/* ========================================
   Toast Notification
   ======================================== */
.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    background: linear-gradient(to bottom, #333, #000);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px outset #666;
    box-shadow: 3px 3px 8px rgba(0, 0, 0, 0.5);
    font-size: var(--font-size-base);
    font-weight: bold;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1000;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-sm);
    }

    .xp-titlebar-text {
        font-size: var(--font-size-base);
    }

    .area-grid {
        grid-template-columns: 1fr;
    }

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

    .btn {
        width: 100%;
    }

    .restore-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .toast {
        left: var(--spacing-sm);
        right: var(--spacing-sm);
        bottom: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    body {
        font-size: 14px;
    }

    .xp-window {
        border-width: 2px;
    }

    .instruction-title {
        font-size: var(--font-size-lg);
    }

    .section-title {
        font-size: var(--font-size-xl);
    }
}

/* ========================================
   XP Style Alert Boxes
   ======================================== */
.xp-alert-box {
    display: flex;
    align-items: flex-start;
    padding: 10px;
    margin-bottom: 15px;
    font-size: 0.9rem;
    border: 1px solid;
    border-radius: 2px;
    /* XP風のわずかな角丸 */
}

.xp-alert-box .alert-icon {
    font-size: 1.5rem;
    margin-right: 10px;
    line-height: 1;
}

.xp-alert-box .alert-content strong {
    display: block;
    margin-bottom: 3px;
    font-size: 0.95rem;
}

.xp-alert-box .alert-content p {
    margin: 0;
    line-height: 1.4;
    font-size: 0.85rem;
}

/* Warning Style (Data Loss) - 薄い黄色 */
.xp-alert-box.warning {
    background-color: #FFFFE1;
    /* XP tooltip yellow */
    border-color: #ACA899;
    color: #000;
}

/* Info Style (Number Hint) - 薄い青 */
.xp-alert-box.info {
    background-color: #EFF7FF;
    border-color: #8BA8CC;
    color: #000;
}

/* ========================================
   Subtitle & Font Size Control
   ======================================== */
.subtitle {
    text-align: center;
    font-size: var(--font-size-lg);
    color: var(--xp-text);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
}

.font-size-control {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-sm);
    background: linear-gradient(to bottom, #F0F0F0, #E0E0E0);
    border: 2px groove #999;
    border-radius: 4px;
}

.control-label {
    font-weight: bold;
    font-size: var(--font-size-base);
}

.btn-font {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: normal;
    font-family: var(--font-xp);
    border: 2px outset #999;
    background: linear-gradient(to bottom, #F9F9F9, #D5D5D5);
    color: var(--xp-text);
    cursor: pointer;
    min-width: 80px;
}

.btn-font.active {
    background: linear-gradient(to bottom, #4A90E2, #2E5C8A);
    color: white;
    border-style: inset;
}

.btn-font:hover:not(.active) {
    background: linear-gradient(to bottom, #FFFFFF, #E0E0E0);
}

/* Font Size Small Mode */
body.font-small {
    font-size: 14px;
}

body.font-small .area-textarea,
body.font-small .restore-textarea,
body.font-small .tool-textarea {
    font-size: 14px;
}

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

body.font-small .xp-menu-item {
    font-size: 13px;
    padding: 6px 10px;
}

/* Font Size Large Mode */
body.font-large {
    font-size: 18px;
}

body.font-large .area-textarea,
body.font-large .restore-textarea,
body.font-large .tool-textarea {
    font-size: 20px;
}

body.font-large .btn {
    font-size: 18px;
    padding: 10px 20px;
}

body.font-large .mode-select {
    font-size: 18px;
}

body.font-large .xp-radio {
    padding: 12px;
}

body.font-large .xp-menubar {
    flex-wrap: wrap;
}

body.font-large .xp-menu-item {
    font-size: 14px;
    padding: 8px 12px;
}

body.font-large .xp-tab {
    font-size: 15px;
    padding: 8px 16px;
}

/* ========================================
   Guide Section (AdSense対策)
   ======================================== */
.guide-section {
    padding: 0;
}

.guide-article {
    margin-bottom: var(--spacing-2xl);
    line-height: 1.9;
}

.guide-article h3 {
    font-size: var(--font-size-xl);
    font-weight: bold;
    color: var(--xp-text);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--xp-border);
    padding-left: var(--spacing-md);
    background: linear-gradient(to right, #E8F4F8, transparent);
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
}

.guide-article p {
    margin-bottom: var(--spacing-md);
    color: #333;
    font-size: var(--font-size-base);
}

.guide-article ul {
    margin-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.guide-article li {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.guide-article strong {
    color: var(--xp-border);
    font-weight: bold;
}

/* ========================================
   XP Style Menu Bar (Navigation)
   ======================================== */
.xp-menubar {
    display: flex;
    flex-wrap: wrap;
    gap: 2px;
    background: linear-gradient(to bottom, #F0F0F0, #D8D8D8);
    padding: var(--spacing-xs);
    border: 2px groove #999;
    margin-bottom: var(--spacing-lg);
    border-radius: 4px;
}

.xp-menu-item {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 500;
    font-family: var(--font-xp);
    text-decoration: none;
    color: var(--xp-text);
    background: linear-gradient(to bottom, #F9F9F9, #E5E5E5);
    border: 2px outset #ccc;
    border-radius: 2px;
    cursor: pointer;
    transition: background 0.1s ease;
}

.xp-menu-item:hover:not(.active) {
    background: linear-gradient(to bottom, #FFFFFF, #F0F0F0);
    border-color: #bbb;
}

.xp-menu-item.active {
    background: linear-gradient(to bottom, #E0E0E0, #C8C8C8);
    border-style: inset;
    color: var(--xp-border);
    font-weight: bold;
}

/* Responsive menu */
@media (max-width: 768px) {
    .xp-menubar {
        justify-content: center;
    }

    .xp-menu-item {
        font-size: 14px;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* ========================================
   Password Generator Styles
   ======================================== */
.password-settings {
    background: linear-gradient(to bottom, #F5F5F5, #E8E8E8);
    border: 2px groove #999;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.password-settings-title {
    font-size: var(--font-size-lg);
    font-weight: bold;
    margin-bottom: var(--spacing-md);
    color: var(--xp-text);
}

.setting-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.setting-label {
    font-weight: bold;
    min-width: 100px;
}

/* XP Style Range Slider */
.xp-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 200px;
    height: 20px;
    background: linear-gradient(to bottom, #E0E0E0, #F8F8F8);
    border: 2px inset #999;
    border-radius: 2px;
    cursor: pointer;
}

.xp-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 24px;
    background: linear-gradient(to bottom, #F0F0F0, #D0D0D0);
    border: 2px outset #999;
    border-radius: 2px;
    cursor: pointer;
}

.xp-slider::-moz-range-thumb {
    width: 16px;
    height: 24px;
    background: linear-gradient(to bottom, #F0F0F0, #D0D0D0);
    border: 2px outset #999;
    border-radius: 2px;
    cursor: pointer;
}

.slider-value {
    font-size: var(--font-size-xl);
    font-weight: bold;
    min-width: 50px;
    text-align: center;
    background: white;
    border: 2px inset #999;
    padding: 2px 8px;
}

/* XP Style Checkboxes */
.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.xp-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    user-select: none;
}

.xp-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--xp-border);
    cursor: pointer;
}

/* Password Result Display */
.password-result {
    background: white;
    border: 3px inset #999;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.password-display {
    font-size: var(--font-size-2xl);
    font-family: "Consolas", "Courier New", monospace;
    word-break: break-all;
    letter-spacing: 2px;
    color: var(--xp-text);
    margin-bottom: var(--spacing-md);
    min-height: 40px;
}

/* Strength Meter (XP Progress Bar Style) */
.strength-meter {
    margin-top: var(--spacing-md);
}

.strength-label {
    font-weight: bold;
    margin-bottom: var(--spacing-xs);
}

.strength-bar-container {
    width: 100%;
    height: 24px;
    background: linear-gradient(to bottom, #E0E0E0, #F8F8F8);
    border: 2px inset #999;
    border-radius: 2px;
    overflow: hidden;
}

.strength-bar {
    height: 100%;
    width: 0%;
    transition: width 0.3s ease, background 0.3s ease;
}

.strength-bar.weak {
    background: linear-gradient(to bottom, #FF6B6B, #CC5555);
    width: 33%;
}

.strength-bar.medium {
    background: linear-gradient(to bottom, #FFD700, #CC9900);
    width: 66%;
}

.strength-bar.strong {
    background: linear-gradient(to bottom, #4CAF50, #2E7D32);
    width: 100%;
}

.strength-text {
    text-align: center;
    margin-top: var(--spacing-xs);
    font-weight: bold;
}

.strength-text.weak {
    color: #CC5555;
}

.strength-text.medium {
    color: #CC9900;
}

.strength-text.strong {
    color: #2E7D32;
}

/* ========================================
   Zenkaku/Hankaku Tool Styles
   ======================================== */
.mode-radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.xp-radio {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
    padding: var(--spacing-sm);
    background: linear-gradient(to bottom, #FAFAFA, #F0F0F0);
    border: 2px groove #999;
    border-radius: 2px;
}

.xp-radio:hover {
    background: linear-gradient(to bottom, #FFFFFF, #F5F5F5);
}

.xp-radio.selected {
    background: linear-gradient(to bottom, #E8F4F8, #D0E8F0);
    border-color: var(--xp-border);
}

.xp-radio input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--xp-border);
    cursor: pointer;
    margin-top: 4px;
    flex-shrink: 0;
}

.radio-content {
    flex: 1;
    min-width: 0;
}

/* ラジオボタンのラベルレイアウト調整 */
body.font-large .xp-radio {
    align-items: flex-start;
    padding: 12px;
}

body.font-large .radio-title {
    font-size: 19px;
}

.radio-title {
    font-weight: bold;
    color: var(--xp-text);
}

.radio-description {
    font-size: 14px;
    color: #666;
    margin-top: 2px;
}

.recommended-badge {
    display: inline-block;
    background: linear-gradient(to bottom, #4CAF50, #2E7D32);
    color: white;
    font-size: 12px;
    padding: 2px 6px;
    border-radius: 2px;
    margin-left: var(--spacing-sm);
    vertical-align: middle;
}

/* Textarea for tools */
.tool-textarea {
    width: 100%;
    min-height: 200px;
    padding: var(--spacing-md);
    font-size: var(--font-size-lg);
    font-family: var(--font-xp);
    line-height: 1.6;
    border: 2px inset #999;
    background-color: white;
    color: var(--xp-text);
    resize: vertical;
}

.tool-textarea:focus {
    outline: 1px dotted #000;
    outline-offset: -3px;
}

/* ========================================
   XP Property Tab Style (v2.0)
   ======================================== */
.xp-tab-container {
    margin-bottom: var(--spacing-lg);
}

.xp-tab-list {
    display: flex;
    gap: 2px;
    margin-bottom: -2px;
    position: relative;
    z-index: 1;
}

.xp-tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    font-family: var(--font-xp);
    background: linear-gradient(to bottom, #E8F4FF, #C8E4FF);
    border: 2px solid var(--xp-border);
    border-bottom: none;
    border-radius: 6px 6px 0 0;
    cursor: pointer;
    color: var(--xp-border);
    transition: all 0.15s ease;
    user-select: none;
    box-shadow: 0 -2px 4px rgba(0, 88, 238, 0.1);
}

.xp-tab:hover:not(.active) {
    background: linear-gradient(to bottom, #F8F8F8, #E0E0E0);
    color: #333;
}

.xp-tab.active {
    background: linear-gradient(to bottom, #FFFFFF, #F8F8F8);
    border-color: var(--xp-border);
    color: var(--xp-accent);
    font-weight: bold;
    position: relative;
    z-index: 2;
    box-shadow: 0 -3px 6px rgba(0, 88, 238, 0.2);
}

.xp-tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 4px;
    background: #FFFFFF;
}

.xp-tab-content {
    display: none;
    background: linear-gradient(to bottom, #FFFFFF, #F8F8F8);
    border: 2px solid var(--xp-border);
    border-radius: 0 4px 4px 4px;
    padding: var(--spacing-lg);
}

.xp-tab-content.active {
    display: block;
}

/* Tab icons */
.xp-tab .tab-icon {
    margin-right: var(--spacing-xs);
}

/* 偽装モード（隠しモード）のタブ強調 */
.xp-tab[data-tab="typing-practice"],
.xp-tab[data-tab="memory-test"],
.xp-tab[data-tab="proofread-game"],
.xp-tab[data-tab="retirement-asset-simulator"],
.xp-tab[data-tab="sorting-puzzle"] {
    position: relative;
    background: linear-gradient(to bottom, #FFF0E0, #FFE0C0);
    /* 少し警告色っぽいベージュ */
    border-color: #E68A00;
    color: #CC7A00;
}

.xp-tab[data-tab="typing-practice"]:hover:not(.active),
.xp-tab[data-tab="memory-test"]:hover:not(.active),
.xp-tab[data-tab="proofread-game"]:hover:not(.active),
.xp-tab[data-tab="retirement-asset-simulator"]:hover:not(.active),
.xp-tab[data-tab="sorting-puzzle"]:hover:not(.active) {
    background: linear-gradient(to bottom, #FFF8F0, #FFECD0);
}

.xp-tab[data-tab="typing-practice"].active,
.xp-tab[data-tab="memory-test"].active,
.xp-tab[data-tab="proofread-game"].active,
.xp-tab[data-tab="retirement-asset-simulator"].active,
.xp-tab[data-tab="sorting-puzzle"].active {
    background: linear-gradient(to bottom, #FFFFFF, #FFF0E0);
    border-color: #E68A00;
    color: #D35400;
}

/* 偽装モードタブに「？」マークなどを付けて気付きやすくする */
.xp-tab[data-tab="typing-practice"]::before,
.xp-tab[data-tab="memory-test"]::before,
.xp-tab[data-tab="proofread-game"]::before,
.xp-tab[data-tab="retirement-asset-simulator"]::before,
.xp-tab[data-tab="sorting-puzzle"]::before {
    content: '★ ';
    font-size: 10px;
    color: #E68A00;
    vertical-align: middle;
}

/* Responsive tabs */
@media (max-width: 768px) {
    .xp-tab {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 14px;
    }

    .xp-tab-list {
        flex-wrap: wrap;
    }
}

/* ========================================
   Font Size Control in Header (v2.0)
   ======================================== */
.header-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    /* 日付とボタンを左右に配置 */
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: linear-gradient(to bottom, #E8E8E8, #D0D0D0);
    border: 1px solid #999;
    border-radius: 2px;
    flex-wrap: wrap;
    /* スマホなどで折り返し */
}

.font-size-buttons {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

.btn-font-size {
    padding: 4px 12px;
    font-size: 14px;
    font-family: var(--font-xp);
    border: 2px outset #ccc;
    background: linear-gradient(to bottom, #F5F5F5, #E0E0E0);
    color: var(--xp-text);
    cursor: pointer;
    border-radius: 2px;
}

.btn-font-size:hover {
    background: linear-gradient(to bottom, #FFFFFF, #F0F0F0);
}

.btn-font-size.active {
    background: linear-gradient(to bottom, #4A90E2, #2E5C8A);
    color: white;
    border-style: inset;
}

.btn-font-size:active {
    border-style: inset;
}

/* Today's date display */
.today-display {
    font-size: 14px;
    color: var(--xp-text);
    background: #FFFFCC;
    padding: 4px 8px;
    border: 1px solid #CCCC99;
    border-radius: 2px;
}

/* ========================================
   Date Calculator Styles (v2.0)
   ======================================== */
.date-input-section {
    margin-top: var(--spacing-md);
}

.date-input-group {
    margin-top: var(--spacing-md);
}

.input-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.input-label {
    font-weight: bold;
    min-width: 60px;
}

.date-input {
    width: 100px;
    padding: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-family: var(--font-xp);
    border: 2px inset #999;
    background-color: white;
}

.date-input.small {
    width: 70px;
}

.date-select {
    padding: var(--spacing-sm);
    font-size: var(--font-size-base);
    font-family: var(--font-xp);
    border: 2px inset #999;
    background-color: white;
}

.era-select {
    min-width: 80px;
}

.input-suffix {
    font-size: var(--font-size-base);
}

/* Age Display */
.age-display-box {
    background: linear-gradient(to bottom, #E8F5E9, #C8E6C9);
    border: 2px solid #4CAF50;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-radius: 4px;
}

.age-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.age-info:last-child {
    margin-bottom: 0;
}

.age-label {
    font-weight: bold;
    min-width: 100px;
}

.age-value {
    font-size: var(--font-size-lg);
}

.age-number {
    font-size: var(--font-size-2xl);
    font-weight: bold;
    color: var(--xp-border);
}

/* Timeline Table */
.timeline-table-wrapper {
    overflow-x: auto;
    margin-top: var(--spacing-md);
}

.timeline-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-base);
}

.timeline-table th,
.timeline-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid #999;
    text-align: left;
}

.timeline-table th {
    background: linear-gradient(to bottom, #4A90E2, #2E5C8A);
    color: white;
    font-weight: bold;
}

.timeline-table tr:nth-child(even) {
    background-color: #F5F5F5;
}

.timeline-table tr:hover {
    background-color: #E8F4F8;
}

/* ========================================
   Unique Lines Tool Styles (v2.0)
   ======================================== */
.stats-display {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.stat-card {
    background: linear-gradient(to bottom, #F5F5F5, #E8E8E8);
    border: 2px groove #999;
    padding: var(--spacing-md);
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-2xl);
    font-weight: bold;
    color: var(--xp-border);
}

.stat-label {
    font-size: 14px;
    color: #666;
}

.ranking-list {
    background: white;
    border: 2px inset #999;
    padding: var(--spacing-md);
    max-height: 200px;
    overflow-y: auto;
}

.ranking-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-xs) 0;
    border-bottom: 1px dotted #ccc;
}

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

.ranking-position {
    font-weight: bold;
    color: var(--xp-border);
    min-width: 30px;
}

.ranking-text {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ranking-count {
    font-weight: bold;
    min-width: 50px;
    text-align: right;
}

/* Trash box */
.trash-box {
    background: linear-gradient(to bottom, #FFF5F5, #FFE8E8);
    border: 2px solid #DC3545;
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    border-radius: 4px;
}

.trash-title {
    font-weight: bold;
    color: #DC3545;
    margin-bottom: var(--spacing-sm);
}

.trash-content {
    max-height: 150px;
    overflow-y: auto;
    font-size: 14px;
    color: #666;
}

/* ========================================
   Typing Practice Styles (v2.0)
   ======================================== */
.typing-container {
    background: white;
    border: 2px groove #999;
    padding: 0;
}

/* Outlook風 Email Header */
.email-header {
    background: linear-gradient(to bottom, #E8EEF4, #D4DCE4);
    border-bottom: 1px solid #999;
    padding: var(--spacing-md);
}

.email-field {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.email-field:last-child {
    margin-bottom: 0;
}

.email-label {
    font-weight: bold;
    min-width: 60px;
    color: #333;
}

.email-value {
    color: var(--xp-border);
}

.typing-settings {
    padding: var(--spacing-md);
    border-bottom: 1px solid #ddd;
    background: #FAFAFA;
}

/* Sample Text Box */
.typing-sample-box {
    padding: var(--spacing-md);
    background: #FFFEF0;
    border-bottom: 1px solid #ddd;
}

.typing-sample-title {
    font-weight: bold;
    margin-bottom: var(--spacing-sm);
    color: #555;
}

.typing-sample-text {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    color: #333;
    padding: var(--spacing-md);
    background: white;
    border: 1px solid #ccc;
    border-radius: 4px;
    min-height: 100px;
}

/* Highlighted characters */
.typing-sample-text .char-correct {
    color: #22C55E;
}

.typing-sample-text .char-wrong {
    color: #EF4444;
    background: #FEE2E2;
    text-decoration: underline;
}

.typing-sample-text .char-current {
    background: #FEF9C3;
    border-bottom: 2px solid var(--xp-border);
}

/* Typing Input Box */
.typing-input-box {
    padding: var(--spacing-md);
}

.typing-input {
    width: 100%;
    min-height: 150px;
    padding: var(--spacing-md);
    font-size: var(--font-size-lg);
    font-family: var(--font-xp);
    line-height: 1.8;
    border: 2px inset #999;
    background-color: white;
    color: var(--xp-text);
    resize: vertical;
}

.typing-input:focus {
    outline: 1px dotted #000;
    outline-offset: -3px;
}

/* Stats Display for Typing */
.typing-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: linear-gradient(to bottom, #F0F0F0, #E0E0E0);
    border-top: 1px solid #ccc;
}

@media (max-width: 768px) {
    .typing-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Typing Result */
.typing-result {
    margin-top: var(--spacing-md);
    padding: var(--spacing-lg);
    background: linear-gradient(to bottom, #E8F5E9, #C8E6C9);
    border: 2px solid #4CAF50;
    border-radius: 4px;
    text-align: center;
}

.typing-result h4 {
    font-size: var(--font-size-xl);
    color: #2E7D32;
    margin-bottom: var(--spacing-sm);
}

.typing-result p {
    font-size: var(--font-size-lg);
}

/* ========================================
   Memory Test Styles (v2.0)
   ======================================== */
.memory-container {
    background: linear-gradient(to bottom, #1a1a2e, #16213e);
    border: 3px solid #0058EE;
    border-radius: 8px;
    padding: var(--spacing-xl);
    text-align: center;
    color: white;
}

.memory-display {
    font-size: 48px;
    font-family: 'Courier New', monospace;
    letter-spacing: 8px;
    padding: var(--spacing-xl);
    margin: var(--spacing-lg) 0;
    background: #000;
    border: 2px solid #0058EE;
    border-radius: 4px;
    color: #00FF00;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.memory-input {
    font-size: 32px;
    font-family: 'Courier New', monospace;
    letter-spacing: 8px;
    text-align: center;
    padding: var(--spacing-md);
    background: white;
    color: #333;
    border: 2px inset #999;
    width: 300px;
    margin: var(--spacing-md) auto;
}

.memory-level {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

.memory-score {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.memory-score-item {
    text-align: center;
}

.memory-score-number {
    font-size: var(--font-size-2xl);
    font-weight: bold;
    color: #FFD700;
}

.memory-score-label {
    font-size: 14px;
    color: #aaa;
}

/* ========================================
   Proofreading Game Styles (v2.0)
   ======================================== */
.proofread-container {
    background: white;
    border: 2px groove #999;
    padding: var(--spacing-lg);
}

.proofread-document {
    font-size: var(--font-size-lg);
    line-height: 2;
    padding: var(--spacing-lg);
    background: #FEFEFE;
    border: 1px solid #ddd;
    min-height: 300px;
}

.proofread-word {
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 2px;
    transition: all 0.1s ease;
    /* すべての文字に同じスタイルを適用 */
}

.proofread-word:hover {
    background: #FEF9C3;
    /* すべての文字に同じホバーエフェクト */
}

.proofread-word.error {
    /* 間違った文字も見た目は同じ */
}

.proofread-word.found {
    background: #86EFAC !important;
    color: #166534;
    font-weight: bold;
}

.proofread-word.clicked {
    background: #FCA5A5 !important;
    animation: shake 0.3s ease;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}

.proofread-stats {
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-md);
    background: linear-gradient(to bottom, #F0F0F0, #E0E0E0);
    border-top: 1px solid #ccc;
    margin-top: var(--spacing-md);
}

/* ========================================
   Asset Simulator Styles (v2.0)
   ======================================== */
.simulator-container {
    background: white;
    border: 2px groove #999;
}

.simulator-header {
    background: linear-gradient(to bottom, #217346, #1D6A3E);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: bold;
}

.simulator-grid {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 1px;
    background: #ccc;
    border: 1px solid #ccc;
}

.simulator-label {
    background: #E8E8E8;
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: bold;
    border-bottom: 1px solid #ccc;
}

.simulator-input-cell {
    background: white;
    padding: var(--spacing-xs);
    border-bottom: 1px solid #ccc;
}

.simulator-input {
    width: 100%;
    padding: var(--spacing-xs);
    font-size: var(--font-size-base);
    font-family: var(--font-xp);
    border: 1px solid #ccc;
    text-align: right;
}

.simulator-chart {
    padding: var(--spacing-lg);
    background: white;
    min-height: 300px;
}

/* ========================================
   Sorting Puzzle Styles (v2.0)
   ======================================== */
.puzzle-container {
    background: white;
    border: 2px groove #999;
    padding: var(--spacing-lg);
}

.puzzle-area {
    min-height: 400px;
    padding: var(--spacing-lg);
    background: #FAFAFA;
    border: 2px inset #999;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
    justify-content: center;
}

.puzzle-area.active {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.puzzle-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    width: 100%;
    min-height: 60px;
    padding: var(--spacing-sm);
    background: white;
    border: 1px dashed #ccc;
    border-radius: 4px;
}

.puzzle-item {
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(to bottom, #4A90E2, #2E5C8A);
    color: white;
    font-weight: bold;
    font-size: var(--font-size-lg);
    border: 2px outset #999;
    border-radius: 4px;
    cursor: grab;
    user-select: none;
    transition: all 0.2s ease;
    min-width: 80px;
    text-align: center;
}

.puzzle-item:hover {
    background: linear-gradient(to bottom, #5AA0F2, #3E6C9A);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.puzzle-item:active {
    cursor: grabbing;
}

.puzzle-item.dragging {
    opacity: 0.5;
}

.puzzle-item.correct {
    background: linear-gradient(to bottom, #4CAF50, #2E7D32);
    border-color: #1B5E20;
}

.puzzle-item.incorrect {
    background: linear-gradient(to bottom, #DC3545, #A02834);
    border-color: #721C24;
}

.puzzle-item.selected {
    background: linear-gradient(to bottom, #FFD700, #FFA500);
    border-color: #FF8C00;
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .puzzle-item {
        font-size: var(--font-size-base);
        padding: var(--spacing-sm) var(--spacing-md);
        min-width: 60px;
    }
}

background: linear-gradient(to bottom, #FCA5A5, #F87171);
border-color: #EF4444;
}