:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-secondary: #64748b;
    --color-bg: #f8fafc;
    --color-card: #ffffff;
    --color-border: #e2e8f0;
    --color-text: #1e293b;
    --color-muted: #64748b;
    --color-success: #16a34a;
    --color-warning: #d97706;
    --color-error: #dc2626;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Noto Sans JP", sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 1.5rem;
    width: 100%;
}

body.manage .container { max-width: 1100px; }

.site-header {
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
}

.site-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.site-footer {
    margin-top: auto;
    padding: 1.5rem 0;
    text-align: center;
    color: var(--color-muted);
    font-size: 0.875rem;
}

.card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    margin-bottom: 1.5rem;
}

.text-center { text-align: center; }
.text-muted { color: var(--color-muted); }

/* Forms */
.form-group { margin-bottom: 1.25rem; }
.form-group label { display: block; font-weight: 500; margin-bottom: 0.375rem; }
.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="datetime-local"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
}
.form-group textarea { resize: vertical; min-height: 80px; }
.checkbox-group label { display: flex; align-items: flex-start; gap: 0.5rem; font-weight: normal; }
.form-error { color: var(--color-error); font-size: 0.875rem; margin-top: 0.25rem; }
.help-text { color: var(--color-muted); font-size: 0.875rem; margin-top: 0.25rem; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: background 0.15s;
}
.btn-primary { background: var(--color-primary); color: white; }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-secondary { background: var(--color-secondary); color: white; }
.btn-danger { background: #c0392b; color: white; }
.btn-danger:hover { background: #a93226; }
.btn-sm { padding: 0.375rem 0.75rem; font-size: 0.875rem; }
.inline-form { display: inline; margin: 0; }
.btn-block { display: block; width: 100%; }
.btn-group { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 1rem; }

/* Entry page */
.entry-page { display: flex; justify-content: center; padding-top: 3rem; }
.entry-card { max-width: 420px; width: 100%; }

/* Consent / Disclosure */
.consent-document {
    max-width: 760px;
    margin: 0 auto;
}

.consent-header {
    margin-bottom: 1.25rem;
}

.consent-header h2 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.consent-intro {
    color: var(--color-muted);
    line-height: 1.7;
}

.consent-meta-list {
    display: grid;
    gap: 0.75rem;
}

.consent-meta-item {
    display: grid;
    grid-template-columns: 7rem 1fr;
    gap: 0.75rem;
}

.consent-meta-item dt {
    font-weight: 600;
    color: var(--color-muted);
}

.consent-body {
    max-height: 55vh;
    overflow-y: auto;
}

.consent-section {
    margin-bottom: 1.5rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--color-border);
}

.consent-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.consent-section h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
    color: var(--color-primary);
}

.consent-section p {
    margin-bottom: 0.75rem;
    line-height: 1.8;
}

.consent-section p:last-child {
    margin-bottom: 0;
}

.consent-agreement {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
}

.consent-agreement h3 {
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
}

.consent-checkbox {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 0.875rem 1rem;
    margin-bottom: 0.75rem;
}

.consent-checkbox label {
    line-height: 1.6;
}

.consent-text, .disclosure-box {
    background: var(--color-bg);
    padding: 1.25rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    max-height: 400px;
    overflow-y: auto;
}
.disclosure-box { border-left: 4px solid var(--color-primary); }

/* Countdown */
.countdown {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    text-align: center;
    margin-top: 1.5rem;
}

.early-start-form {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px dashed var(--color-border);
    text-align: center;
}

.early-start-form .help-text {
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: var(--color-muted);
}

/* Chat UI (classai-inspired) */
body.chat-page {
    background: var(--color-bg);
}

body.chat-page .chat-page-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    max-width: none;
    width: 100%;
    margin: 0;
    padding: 0;
    height: 100dvh;
}

.chat-page {
    display: flex;
    flex-direction: column;
    height: 100dvh;
    overflow: hidden;
}

.chat-navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border);
}

.chat-navbar-title {
    font-weight: 600;
    font-size: 1rem;
}

.chat-navbar-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.chat-navbar-meta {
    font-size: 0.85rem;
    color: var(--color-muted);
}

.chat-card {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    margin-bottom: 0;
    padding: 0;
    overflow: hidden;
    border-radius: 0;
    border-left: none;
    border-right: none;
    border-top: none;
}

.chat-container {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    height: auto;
    max-height: none;
    background: var(--color-card);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 0.85rem 1rem 1.1rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
}

.chat-messages.is-awaiting-connection {
    justify-content: center;
}

.chat-row {
    display: flex;
    align-items: flex-end;
    gap: 0.25rem;
    max-width: 100%;
    overflow: visible;
}

.chat-row.user {
    align-self: flex-end;
    align-items: flex-end;
    gap: 0.35rem;
    padding-right: 0.15rem;
}

.chat-row.user .chat-avatar {
    margin-bottom: 0.9rem;
}

.chat-row.assistant {
    align-self: flex-start;
    align-items: flex-start;
    gap: 0.35rem;
}

.chat-avatar {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: 1px solid var(--color-border);
    font-size: 0.85rem;
    font-weight: 600;
}

.chat-avatar.assistant {
    background: #eef2ff;
    color: #4338ca;
}

.chat-avatar.user {
    background: #dbeafe;
    color: var(--color-primary);
}

.chat-bubble-body {
    max-width: min(88%, calc(100% - 2.5rem));
    min-width: auto;
    width: fit-content;
    flex-shrink: 0;
    overflow: visible;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.chat-row.user .chat-bubble-body {
    align-items: flex-end;
}

.chat-row.assistant .chat-bubble-body {
    align-items: flex-start;
}

.chat-bubble {
    position: relative;
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.15rem;
    padding: 0.65rem 0.95rem;
    border-radius: 6px;
    line-height: 1.45;
    word-break: normal;
    overflow-wrap: break-word;
    width: auto;
    max-width: 100%;
    overflow: visible;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.08);
}

.bubble-content {
    margin: 0;
    padding: 0;
    line-height: 1.45;
    white-space: pre-wrap;
}

.chat-row.user .chat-bubble {
    background: var(--color-primary);
    color: #fff;
    border-bottom-right-radius: 6px;
}

.chat-row.user .chat-bubble::before {
    content: "";
    position: absolute;
    right: -4px;
    bottom: 0.8rem;
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    transform: rotate(45deg);
    border-radius: 0 0 2px 0;
    z-index: 1;
}

.chat-row.assistant .chat-bubble {
    background: #f1f5f9;
}

.chat-row.assistant .chat-bubble.is-processing {
    opacity: 0.62;
}

.chat-row.assistant .chat-bubble::before {
    content: "";
    position: absolute;
    left: -4px;
    top: 0.85rem;
    width: 8px;
    height: 8px;
    background: #f1f5f9;
    transform: rotate(45deg);
    border-radius: 0 0 0 2px;
    z-index: 1;
}

.thinking-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--color-muted);
    white-space: nowrap;
}

.chat-connection-wait {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 2.5rem 1rem;
    min-height: 10rem;
    color: var(--color-muted);
    text-align: center;
}

.chat-connection-wait-text {
    font-size: 0.95rem;
    line-height: 1.5;
}

.connection-spinner {
    width: 2.5rem;
    height: 2.5rem;
    border: 3px solid rgba(100, 116, 139, 0.2);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: connection-spin 0.9s linear infinite;
}

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

.chat-connection-wait .thinking-dots {
    margin-top: 0.15rem;
}

.chat-interviewer-name {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-muted);
    margin-top: 0.15rem;
    padding-left: 0.15rem;
}

.chat-message-meta {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--color-muted);
    font-size: 0.72rem;
    line-height: 1.1;
}

.chat-row.user .chat-message-meta {
    justify-content: flex-end;
    padding-right: 0.15rem;
}

.chat-row.assistant .chat-message-meta {
    justify-content: flex-start;
    padding-left: 0.15rem;
}

.chat-message-time {
    color: inherit;
    font-size: inherit;
    line-height: inherit;
    white-space: nowrap;
}

.chat-message-sender {
    font-weight: 600;
    white-space: nowrap;
}

.chat-row.user .chat-message-time {
    text-align: right;
}

.chat-row.assistant .chat-message-time {
    text-align: left;
}

.thinking-dots {
    display: inline-flex;
    align-items: center;
    gap: 0.18rem;
    padding-left: 0.05rem;
}

.thinking-dots span {
    width: 0.28rem;
    height: 0.28rem;
    border-radius: 999px;
    background: currentColor;
    opacity: 0.35;
    animation: thinking-dot 1s ease-in-out infinite;
}

.thinking-dots span:nth-child(2) { animation-delay: 0.15s; }
.thinking-dots span:nth-child(3) { animation-delay: 0.3s; }

@keyframes thinking-dot {
    0%, 80%, 100% { transform: translateY(0); opacity: 0.35; }
    40% { transform: translateY(-0.18rem); opacity: 0.9; }
}

.chat-error-message {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    color: var(--color-text);
}

.chat-error-detail {
    flex-basis: 100%;
    color: var(--color-muted);
    font-size: 0.8rem;
}

.chat-input-area {
    border-top: 1px solid var(--color-border);
    padding: 0.6rem 1rem 0.75rem;
    background: var(--color-card);
    display: flex;
    gap: 0.5rem;
    align-items: flex-end;
}

.chat-input-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-width: 0;
}

.chat-input-main textarea {
    width: 100%;
    min-height: 5.4rem;
    max-height: 10rem;
    padding: 0.75rem 0.85rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    line-height: 1.45;
    resize: vertical;
}

.chat-input-main textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.chat-input-actions {
    display: flex;
    align-items: stretch;
    flex-shrink: 0;
}

.chat-input-actions .btn {
    min-height: 5.4rem;
    min-width: 5rem;
}

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

@media (max-width: 640px) {
    .chat-bubble-body {
        max-width: min(90%, calc(100% - 2.5rem));
    }

    .chat-navbar {
        flex-wrap: wrap;
    }

    .chat-input-area {
        flex-direction: column;
        align-items: stretch;
    }

    .chat-input-actions .btn {
        min-height: auto;
        width: 100%;
    }
}

/* Manage */
.manage-nav {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 0.75rem;
}
.manage-nav a {
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: var(--color-muted);
    border-radius: var(--radius);
    font-size: 0.9rem;
}
.manage-nav a:hover, .manage-nav a.active {
    background: var(--color-primary);
    color: white;
}

.section { margin-bottom: 2rem; }
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}
.section-header h3 { font-size: 1.1rem; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}
.stat-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem;
    text-align: center;
}
.stat-value { font-size: 2rem; font-weight: 700; color: var(--color-primary); }
.stat-label { font-size: 0.875rem; color: var(--color-muted); }

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-card);
    border-radius: var(--radius);
    overflow: hidden;
    font-size: 0.9rem;
}
.data-table th, .data-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}
.data-table th { background: var(--color-bg); font-weight: 600; }
.message-cell { max-width: 400px; white-space: pre-wrap; word-break: break-word; }

.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 500;
}
.badge-scheduled { background: #dbeafe; color: #1d4ed8; }
.badge-in_progress { background: #fef3c7; color: #d97706; }
.badge-completed { background: #dcfce7; color: #16a34a; }
.badge-cancelled { background: #fee2e2; color: #dc2626; }

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}
@media (max-width: 768px) { .detail-grid { grid-template-columns: 1fr; } }

.detail-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
}
.detail-card.highlight { border-color: var(--color-primary); }
.detail-card h3 { margin-bottom: 1rem; font-size: 1rem; }
.detail-card dl { display: grid; grid-template-columns: auto 1fr; gap: 0.5rem 1rem; }
.detail-card dt { font-weight: 600; color: var(--color-muted); }
.inline-dl { display: flex; flex-wrap: wrap; gap: 1.5rem; }
.inline-dl dt { font-weight: 600; margin-right: 0.25rem; }
.inline-dl dd { margin-right: 1rem; }

.url-box {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    background: var(--color-bg);
    padding: 0.75rem;
    border-radius: var(--radius);
    margin: 0.75rem 0;
    word-break: break-all;
}

.manage-form { max-width: 700px; }

.ai-log-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1rem;
    margin-bottom: 1rem;
}
.ai-log-header {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    font-size: 0.8rem;
    color: var(--color-muted);
    margin-bottom: 0.75rem;
}
.ai-log-card pre {
    background: white;
    padding: 0.75rem;
    border-radius: 4px;
    overflow-x: auto;
    font-size: 0.8rem;
    margin: 0.5rem 0;
    white-space: pre-wrap;
}
.ai-response { margin-top: 0.75rem; }

.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
}
.alert-success { background: #dcfce7; color: #16a34a; }
.alert-error { background: #fee2e2; color: #dc2626; }

code {
    background: var(--color-bg);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
}