/* =============================================
   アノキャリ チャット形式Webアンケート
   Design System & Styles
   ============================================= */

/* ---------- CSS Variables ---------- */
:root {
    /* Colors */
    --color-accent: #003db8;
    /* BlinkAI Blue */
    --color-accent-hover: #002a80;
    --color-accent-light: #e6ecfa;
    --color-background: #ffffff;
    --color-surface: #f5f5f5;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-border: #e0e0e0;
    --color-success: #4caf50;
    --color-error: #f44336;

    /* Typography */
    --font-family: 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* ---------- 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: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-surface);
    min-height: 100vh;
    min-height: 100dvh;
}

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

input,
select {
    font-family: inherit;
    font-size: var(--font-size-base);
}

/* ---------- App Container ---------- */
.app-container {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    min-height: 100dvh;
    background-color: var(--color-background);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
}

/* ---------- Header ---------- */
.header {
    background: var(--color-background);
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}

.header__logo {
    display: flex;
    align-items: center;
    justify-content: center;
}

.header__logo-img {
    height: 48px;
    width: auto;
}

/* ---------- Stats Section ---------- */
.stats-section {
    background: var(--color-background);
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.stats-card {
    background: linear-gradient(135deg, var(--color-accent-light) 0%, #fff 100%);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid rgba(0, 61, 184, 0.1);
}

.stats-card__title {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.stats-card__items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.stats-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.stats-item__icon {
    font-size: var(--font-size-lg);
}

.stats-item__value {
    font-weight: 700;
    color: var(--color-accent);
}

/* ---------- Live Counter ---------- */
.live-counter {
    background: linear-gradient(90deg, #e6ecfa 0%, #f0f4ff 100%);
    padding: var(--spacing-md);
    text-align: center;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: nowrap;
}

.live-counter__dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
    flex-shrink: 0;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.live-counter__text {
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

.live-counter__number {
    font-weight: 700;
    color: var(--color-accent);
    font-size: var(--font-size-lg);
}

/* ---------- Progress Bar ---------- */
.progress-section {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.progress-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: var(--color-surface);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar__fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent) 0%, #3366cc 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-normal);
}

.progress-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    font-weight: 600;
    white-space: nowrap;
    display: flex;
    align-items: baseline;
    gap: 1px;
}

.progress-number {
    font-size: 1.75rem;
    color: var(--color-accent);
    font-weight: 700;
    line-height: 1;
    position: relative;
    top: -3px;
}

/* ---------- Chat Area ---------- */
.chat-area {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* ---------- Chat Bubble ---------- */
.chat-bubble {
    display: flex;
    gap: var(--spacing-sm);
    animation: fadeSlideIn 0.4s ease forwards;
    opacity: 0;
    will-change: opacity, transform;
}

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translate3d(0, 10px, 0);
    }

    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

.chat-bubble--agent {
    align-items: flex-start;
}

.chat-bubble--user {
    flex-direction: row-reverse;
}

.chat-bubble__avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    flex-shrink: 0;
    background: var(--color-background);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.chat-bubble__avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.chat-bubble__content {
    max-width: 80%;
}

.chat-bubble__name {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xs);
    padding-left: var(--spacing-sm);
}

.chat-bubble__message {
    background: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border-top-left-radius: 4px;
    box-shadow: var(--shadow-sm);
    line-height: 1.5;
}

.chat-bubble--user .chat-bubble__message {
    background: var(--color-accent);
    color: var(--color-background);
    border-radius: var(--radius-lg);
    border-top-right-radius: 4px;
}

/* ---------- Options Grid ---------- */
.options-container {
    animation: fadeSlideIn 0.4s ease 0.2s forwards;
    opacity: 0;
    will-change: opacity, transform;
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.options-grid--single {
    grid-template-columns: 1fr;
}

.option-btn {
    background: var(--color-background);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-text);
    transition: all var(--transition-fast);
    text-align: center;
}

.option-btn:hover {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
}

.option-btn:active {
    transform: scale3d(0.98, 0.98, 1);
}

.option-btn--selected {
    border-color: var(--color-accent);
    background: var(--color-accent);
    color: var(--color-background);
}

.option-btn--selected:hover {
    background: var(--color-accent-hover);
}

/* ---------- Region Tabs ---------- */
.region-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.region-tab {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-full);
    background: var(--color-surface);
    color: var(--color-text-light);
    transition: all var(--transition-fast);
}

.region-tab:hover {
    background: var(--color-accent-light);
    color: var(--color-accent);
}

.region-tab--active {
    background: var(--color-accent);
    color: var(--color-background);
}

/* ---------- Prefecture Grid ---------- */
.prefecture-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    max-height: 300px;
    overflow-y: auto;
    padding: var(--spacing-xs);
}

/* ---------- Input Group ---------- */
.input-group {
    animation: fadeSlideIn 0.4s ease 0.2s forwards;
    opacity: 0;
    will-change: opacity, transform;
}

.input-field {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
    background: var(--color-background);
}

.input-field:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(0, 61, 184, 0.1);
}

.input-field::placeholder {
    color: #aaa;
}

.input-field--error {
    border-color: var(--color-error);
}

.input-error {
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

/* ---------- Date Selects ---------- */
.date-selects {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.date-select {
    flex: 1;
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    background: var(--color-background);
    transition: all var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.date-select:focus {
    outline: none;
    border-color: var(--color-accent);
}

.date-separator {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

/* ---------- Action Buttons ---------- */
.action-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.btn {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    transition: all var(--transition-fast);
}

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

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

.btn--primary:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.btn--secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

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

/* ---------- Submit Button ---------- */
.submit-btn {
    width: 100%;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-accent) 0%, #3366cc 100%);
    color: var(--color-background);
    font-size: var(--font-size-lg);
    font-weight: 700;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.submit-btn:disabled {
    background: #ccc;
    transform: none;
    box-shadow: none;
    cursor: not-allowed;
}

/* ---------- Selection Counter ---------- */
.selection-counter {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-top: var(--spacing-sm);
}

.selection-counter__current {
    color: var(--color-accent);
    font-weight: 700;
}

/* ---------- Complete Screen ---------- */
.complete-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    text-align: center;
    min-height: 60vh;
    animation: fadeSlideIn 0.5s ease forwards;
}

.complete-screen__icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    animation: bounce 0.6s ease;
}

@keyframes bounce {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.2);
    }
}

.complete-screen__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
}

.complete-screen__message {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    line-height: 1.8;
}

.complete-screen__message strong {
    color: var(--color-accent);
    font-weight: 700;
}

.complete-screen__highlight {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-accent) 0%, #3366cc 100%);
    color: var(--color-background);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-weight: 600;
}

/* ---------- Loading Spinner ---------- */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--color-background);
    animation: spin 0.8s linear infinite;
}

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

/* ---------- Loading Overlay ---------- */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.98);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loading-overlay__content {
    text-align: center;
}

.loading-overlay__spinner {
    width: 60px;
    height: 60px;
    border: 5px solid var(--color-accent-light);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto var(--spacing-lg);
}

.loading-overlay__text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-accent);
}

.loading-dots span {
    animation: dotBlink 1.4s infinite;
    opacity: 0;
}

.loading-dots span:nth-child(1) {
    animation-delay: 0s;
}

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

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

@keyframes dotBlink {

    0%,
    20% {
        opacity: 0;
    }

    40% {
        opacity: 1;
    }

    100% {
        opacity: 1;
    }
}

/* ---------- Utility Classes ---------- */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ---------- Responsive Adjustments ---------- */
@media (max-width: 360px) {
    .options-grid {
        grid-template-columns: 1fr;
    }

    .prefecture-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 481px) {
    .app-container {
        margin-top: var(--spacing-lg);
        margin-bottom: var(--spacing-lg);
        border-radius: var(--radius-lg);
        min-height: calc(100vh - var(--spacing-xl) * 2);
        min-height: calc(100dvh - var(--spacing-xl) * 2);
    }
}