/* ================================================
   Slug Maker - スタイルシート
   ================================================ */

/* --------------------------------
   CSS Variables
   -------------------------------- */
:root {
    /* Colors */
    --color-primary: #4f46e5;
    --color-primary-hover: #4338ca;
    --color-primary-light: #e0e7ff;
    --color-success: #10b981;
    --color-success-light: #d1fae5;
    --color-error: #ef4444;
    --color-error-light: #fee2e2;
    --color-warning: #f59e0b;

    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-text-lighter: #9ca3af;

    --color-bg: #f9fafb;
    --color-bg-white: #ffffff;
    --color-border: #e5e7eb;
    --color-border-focus: #4f46e5;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;

    /* Font */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

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

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
}

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea {
    font-family: inherit;
    font-size: inherit;
}

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

a:hover {
    text-decoration: underline;
}

/* --------------------------------
   Container
   -------------------------------- */
.container {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-md);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* --------------------------------
   Header
   -------------------------------- */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
}

.header__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

.header__apikey-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.header__apikey-btn:hover {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-color: var(--color-primary-light);
}

.header__apikey-btn svg {
    flex-shrink: 0;
}

/* --------------------------------
   Main Content
   -------------------------------- */
.main {
    flex: 1;
}

/* --------------------------------
   How to Use
   -------------------------------- */
.how-to-use {
    margin-bottom: var(--spacing-md);
}

.how-to-use__steps {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xs);
    list-style: none;
    counter-reset: step-counter;
}

.how-to-use__step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    position: relative;
    counter-increment: step-counter;
}

/* ステップ間の矢印 */
.how-to-use__step:not(:last-child)::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    border-left: 6px solid var(--color-text-lighter);
}

.how-to-use__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 50%;
}

.how-to-use__text {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text-light);
    text-align: center;
    white-space: nowrap;
}

/* --------------------------------
   Input Section
   -------------------------------- */
.input-section {
    background-color: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.input-section__header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: var(--spacing-sm);
}

.input-section__label {
    font-weight: 600;
    color: var(--color-text);
}

.input-section__help-link {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    transition: color var(--transition-fast);
}

.input-section__help-link:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

.input-section__textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    resize: vertical;
    min-height: 80px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-section__textarea:focus {
    outline: none;
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.input-section__textarea::placeholder {
    color: var(--color-text-lighter);
}

.input-section__counter {
    text-align: right;
    font-size: 0.75rem;
    color: var(--color-text-lighter);
    margin-top: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.input-section__submit-btn {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-primary);
    color: white;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.input-section__submit-btn:hover:not(:disabled) {
    background-color: var(--color-primary-hover);
}

.input-section__submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-loading {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.input-section__footer {
    text-align: center;
    margin-top: var(--spacing-md);
}

.input-section__quota-link {
    font-size: 0.75rem;
    color: var(--color-text-lighter);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.input-section__quota-link:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

/* --------------------------------
   Credit
   -------------------------------- */
.credit {
    text-align: center;
    margin-top: var(--spacing-md);
    font-size: 0.75rem;
    color: var(--color-text-lighter);
}

.credit a {
    color: var(--color-text-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.credit a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

/* --------------------------------
   Error Message
   -------------------------------- */
.error-message {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--color-error-light);
    color: var(--color-error);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
}

.error-message__text {
    flex: 1;
}

.error-message__close {
    font-size: 1.25rem;
    color: var(--color-error);
    padding: var(--spacing-xs);
    margin-left: var(--spacing-sm);
}

/* --------------------------------
   Results Section
   -------------------------------- */
.results-section {
    margin-top: var(--spacing-lg);
    background-color: var(--color-bg-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results-section__title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.results-list {
    list-style: none;
}

.result-item {
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    transition: border-color var(--transition-fast);
}

.result-item:last-child {
    margin-bottom: 0;
}

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

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

.result-item__slug {
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-primary);
    word-break: break-all;
}

.result-item__copy-btn {
    flex-shrink: 0;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.result-item__copy-btn:hover {
    background-color: var(--color-primary);
    color: white;
}

.result-item__copy-btn--copied {
    background-color: var(--color-success);
    color: white;
}

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

.result-item__type {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background-color: var(--color-bg);
    color: var(--color-text-light);
}

.result-item__type--simple {
    background-color: #dbeafe;
    color: #1e40af;
}

.result-item__type--descriptive {
    background-color: #fef3c7;
    color: #92400e;
}

.result-item__type--action {
    background-color: #d1fae5;
    color: #065f46;
}

.result-item__reason {
    font-size: 0.8125rem;
    color: var(--color-text-light);
}

/* --------------------------------
   Modal
   -------------------------------- */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal__content {
    position: relative;
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    background-color: var(--color-bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.2s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.modal__title {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal__close-btn {
    font-size: 1.5rem;
    color: var(--color-text-light);
    line-height: 1;
    padding: var(--spacing-xs);
}

.modal__close-btn:hover {
    color: var(--color-text);
}

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

.modal__footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.modal__cancel-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--color-text-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

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

.modal__save-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-primary);
    color: white;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

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

.modal__save-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Modal Footer - Centered */
.modal__footer--center {
    justify-content: center;
}

/* Modal Primary Button */
.modal__primary-btn {
    padding: var(--spacing-sm) var(--spacing-xl);
    background-color: var(--color-primary);
    color: white;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

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

/* --------------------------------
   Slug Explanation (Help Modal)
   -------------------------------- */
.slug-explanation__intro {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.slug-explanation__example {
    background-color: var(--color-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.slug-explanation__example-label {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.slug-explanation__url {
    display: block;
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    font-size: 0.875rem;
    background-color: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    word-break: break-all;
}

.slug-explanation__url mark {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    padding: 1px 4px;
    border-radius: 2px;
}

.slug-explanation__example-desc {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.slug-explanation__benefits,
.slug-explanation__rules {
    margin-bottom: var(--spacing-lg);
}

.slug-explanation__benefits:last-child,
.slug-explanation__rules:last-child {
    margin-bottom: 0;
}

.slug-explanation__subtitle {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.slug-explanation__list {
    list-style: none;
}

.slug-explanation__list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    font-size: 0.875rem;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
}

.slug-explanation__list li:last-child {
    border-bottom: none;
}

.slug-explanation__icon {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    padding: 2px 8px;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    border-radius: var(--radius-sm);
    background-color: var(--color-primary);
    color: white;
}

.slug-explanation__rule-list {
    list-style: none;
    counter-reset: rule-counter;
}

.slug-explanation__rule-list li {
    position: relative;
    padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-xl);
    font-size: 0.875rem;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
    counter-increment: rule-counter;
}

.slug-explanation__rule-list li:last-child {
    border-bottom: none;
}

.slug-explanation__rule-list li::before {
    content: counter(rule-counter);
    position: absolute;
    left: 0;
    top: var(--spacing-sm);
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    background-color: var(--color-bg);
    color: var(--color-text-light);
    border-radius: 50%;
}

/* --------------------------------
   Settings Group
   -------------------------------- */
.settings-group {
    margin-bottom: var(--spacing-lg);
}

.settings-group:last-child {
    margin-bottom: 0;
}

.settings-group__title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.settings-group__label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
}

.settings-group__input-wrapper {
    display: flex;
    gap: var(--spacing-sm);
}

.settings-group__input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.settings-group__input:focus {
    outline: none;
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.settings-group__toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    color: var(--color-text-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

.settings-group__toggle-btn:hover {
    background-color: var(--color-bg);
}

.settings-group__hint {
    font-size: 0.75rem;
    color: var(--color-text-lighter);
    margin-top: var(--spacing-xs);
}

.settings-group__link-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.settings-group__link-btn:hover {
    background-color: var(--color-primary);
    color: white;
    text-decoration: none;
}

.settings-group__link-btn svg {
    flex-shrink: 0;
}

.settings-group__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.settings-group__actions .settings-group__link-btn {
    margin-top: 0;
}

.settings-group__help-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.75rem;
    color: var(--color-text-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.settings-group__help-link:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.settings-group__help-link svg {
    flex-shrink: 0;
}

.settings-group__status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    font-size: 0.8125rem;
}

.status-icon {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-icon--valid {
    background-color: var(--color-success);
}

.status-icon--invalid {
    background-color: var(--color-text-lighter);
}

.status-text--valid {
    color: var(--color-success);
}

/* --------------------------------
   Nested Modal
   -------------------------------- */
.modal--nested {
    z-index: 1100;
}

.modal--nested .modal__overlay {
    background-color: rgba(0, 0, 0, 0.6);
}

/* --------------------------------
   API Guide (Help Modal)
   -------------------------------- */
.api-guide__steps {
    list-style: none;
    margin-bottom: var(--spacing-lg);
}

.api-guide__step {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
}

.api-guide__step:last-child {
    border-bottom: none;
}

.api-guide__step-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.api-guide__step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    font-size: 0.8125rem;
    font-weight: 700;
    color: white;
    background-color: var(--color-primary);
    border-radius: 50%;
}

.api-guide__step-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text);
}

.api-guide__step-desc {
    font-size: 0.875rem;
    color: var(--color-text-light);
    line-height: 1.6;
    padding-left: calc(24px + var(--spacing-sm));
}

.api-guide__step-desc code {
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    font-size: 0.8125rem;
    background-color: var(--color-bg);
    padding: 1px 6px;
    border-radius: var(--radius-sm);
    color: var(--color-primary);
}

.api-guide__note {
    display: block;
    font-size: 0.8125rem;
    color: var(--color-text-lighter);
    margin-top: var(--spacing-xs);
}

.api-guide__external-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    margin-left: calc(24px + var(--spacing-sm));
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.api-guide__external-link:hover {
    background-color: var(--color-primary);
    color: white;
    text-decoration: none;
}

.api-guide__note-box {
    background-color: var(--color-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border-left: 3px solid var(--color-warning);
}

.api-guide__note-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.api-guide__note-title svg {
    color: var(--color-warning);
}

.api-guide__note-list {
    list-style: none;
}

.api-guide__note-list li {
    position: relative;
    padding-left: var(--spacing-md);
    font-size: 0.8125rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

.api-guide__note-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-text-lighter);
}

/* API Guide - Quota Box */
.api-guide__quota-box {
    background-color: var(--color-primary-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    border-left: 3px solid var(--color-primary);
}

.api-guide__quota-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.api-guide__quota-title svg {
    color: var(--color-primary);
}

.api-guide__quota-desc {
    font-size: 0.8125rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.api-guide__quota-list {
    list-style: none;
}

.api-guide__quota-list li {
    position: relative;
    padding-left: var(--spacing-md);
    font-size: 0.8125rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

.api-guide__quota-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

/* --------------------------------
   Quota Explanation (Help Modal)
   -------------------------------- */
.quota-explanation__intro {
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.quota-explanation__section {
    margin-bottom: var(--spacing-lg);
}

.quota-explanation__section:last-of-type {
    margin-bottom: var(--spacing-lg);
}

.quota-explanation__subtitle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.quota-explanation__subtitle svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

.quota-explanation__list {
    list-style: none;
}

.quota-explanation__list li {
    position: relative;
    padding-left: var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

.quota-explanation__list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 600;
}

.quota-explanation__note {
    background-color: var(--color-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border-left: 3px solid var(--color-warning);
}

.quota-explanation__note p {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin: 0;
}

.quota-explanation__note strong {
    color: var(--color-text);
}

/* --------------------------------
   Toast
   -------------------------------- */
.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-text);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.3s ease;
    z-index: 1001;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* --------------------------------
   Utility: Hidden
   -------------------------------- */
[hidden] {
    display: none !important;
}

/* --------------------------------
   Responsive
   -------------------------------- */
@media (max-width: 480px) {
    .container {
        padding: var(--spacing-sm);
    }

    .header {
        padding: var(--spacing-sm) 0;
        margin-bottom: var(--spacing-md);
    }

    .header__title {
        font-size: 1.25rem;
    }

    .how-to-use__step {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .how-to-use__icon {
        width: 32px;
        height: 32px;
    }

    .how-to-use__icon svg {
        width: 16px;
        height: 16px;
    }

    .how-to-use__text {
        font-size: 0.6875rem;
    }

    .input-section,
    .results-section {
        padding: var(--spacing-md);
    }

    .result-item__header {
        flex-direction: column;
        align-items: flex-start;
    }

    .result-item__copy-btn {
        align-self: flex-end;
        margin-top: var(--spacing-xs);
    }

    .modal__content {
        max-height: 85vh;
    }

    .modal__footer {
        flex-direction: column;
    }

    .modal__cancel-btn,
    .modal__save-btn {
        width: 100%;
        text-align: center;
    }
}