:root {
    color-scheme: light;
    --bg: #f3efe5;
    --panel: rgba(255, 250, 242, 0.92);
    --panel-border: rgba(86, 63, 41, 0.14);
    --text: #1f1a17;
    --muted: #6d6258;
    --accent: #b85c38;
    --accent-dark: #8e4123;
    --assistant: #fff5ec;
    --user: #efe3d2;
    --shadow: 0 18px 40px rgba(71, 45, 28, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top, rgba(255, 216, 176, 0.9), transparent 35%),
        linear-gradient(160deg, #f8f4eb 0%, #efe5d8 55%, #eadfd3 100%);
}

.app-shell {
    display: grid;
    min-height: 100vh;
    place-items: center;
    padding: 24px;
}

.page-card {
    width: min(100%, 1080px);
    display: grid;
    gap: 20px;
}

.page-card-narrow {
    width: min(100%, 920px);
}

.page-header {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
}

.top-nav {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    border: 1px solid var(--panel-border);
    border-radius: 999px;
    color: var(--text);
    background: rgba(255, 248, 241, 0.72);
    text-decoration: none;
    font-weight: 600;
}

.nav-link-active {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: #fff8f3;
    border-color: transparent;
}

.nav-link-disabled {
    opacity: 0.45;
    pointer-events: none;
}

.chat-card {
    width: 100%;
    display: grid;
    grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
    gap: 20px;
    padding: 28px;
    border: 1px solid var(--panel-border);
    border-radius: 28px;
    background: var(--panel);
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

.assistant-panel {
    display: grid;
    align-content: start;
    gap: 16px;
}

.portrait-frame {
    position: relative;
    overflow: hidden;
    border-radius: 24px;
    border: 1px solid var(--panel-border);
    background:
        radial-gradient(circle at 30% 20%, rgba(255, 232, 208, 0.95), transparent 36%),
        linear-gradient(180deg, rgba(255, 246, 238, 1) 0%, rgba(243, 226, 206, 1) 100%);
    aspect-ratio: 4 / 5;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.assistant-portrait {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.assistant-meta h1,
.assistant-meta p,
.chat-header h2,
.chat-header p {
    margin: 0;
}

.eyebrow {
    margin-bottom: 8px;
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.subtitle {
    margin-top: 10px;
    color: var(--muted);
    line-height: 1.5;
}

.emotion-line {
    margin-top: 14px;
    color: var(--muted);
}

.meta-note,
.chat-subtitle {
    margin-top: 10px;
    color: var(--muted);
    line-height: 1.45;
    font-size: 0.94rem;
}

.chat-panel {
    display: grid;
    gap: 18px;
    min-width: 0;
}

.settings-layout {
    display: grid;
    gap: 18px;
}

.settings-panel {
    display: grid;
    gap: 10px;
    padding: 14px 16px;
    border: 1px solid var(--panel-border);
    border-radius: 20px;
    background: rgba(255, 248, 241, 0.72);
}

.settings-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.settings-panel-header h3 {
    margin: 0;
    font-size: 1rem;
}

.settings-grid {
    display: grid;
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 10px 12px;
    align-items: center;
}

.emotion-assets-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px 12px;
}

.emotion-asset-field {
    display: grid;
    gap: 6px;
}

.emotion-asset-field label {
    font-size: 0.86rem;
    font-weight: 600;
    color: var(--muted);
}

.admin-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.form-block {
    display: grid;
    gap: 6px;
}

.traits-editor {
    display: grid;
    gap: 10px;
}

.trait-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 120px minmax(0, 2fr) auto;
    gap: 10px;
    align-items: center;
    padding: 12px;
    border: 1px solid var(--panel-border);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.48);
}

.trait-row button {
    padding: 10px 14px;
    background: rgba(109, 98, 88, 0.12);
    color: var(--text);
    border: 1px solid var(--panel-border);
}

.field-label {
    font-size: 0.9rem;
    font-weight: 600;
}

.messages {
    display: grid;
    gap: 14px;
    min-height: 360px;
    max-height: 55vh;
    overflow-y: auto;
    padding-right: 6px;
}

.message {
    padding: 16px 18px;
    border-radius: 20px;
    border: 1px solid var(--panel-border);
    line-height: 1.55;
}

.message-assistant {
    background: var(--assistant);
}

.message-user {
    background: var(--user);
}

.message-role {
    margin: 0 0 8px;
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.message p:last-child {
    margin: 0;
    white-space: pre-wrap;
}

.chat-form {
    display: grid;
    gap: 10px;
}

.input-label {
    font-size: 0.95rem;
    font-weight: 600;
}

textarea {
    width: 100%;
    resize: vertical;
    padding: 14px 16px;
    border: 1px solid rgba(86, 63, 41, 0.18);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.78);
    color: var(--text);
    font: inherit;
    line-height: 1.5;
}

input,
select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid rgba(86, 63, 41, 0.18);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.78);
    color: var(--text);
    font: inherit;
}

textarea:focus {
    outline: 2px solid rgba(184, 92, 56, 0.22);
    border-color: var(--accent);
}

input:focus,
select:focus {
    outline: 2px solid rgba(184, 92, 56, 0.22);
    border-color: var(--accent);
}

.form-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.status {
    min-height: 1.2em;
    margin: 0;
    color: var(--muted);
    font-size: 0.92rem;
}

button {
    border: 0;
    border-radius: 999px;
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: #fff8f3;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    transition: transform 120ms ease, opacity 120ms ease;
}

button:hover:enabled {
    transform: translateY(-1px);
}

button:disabled {
    opacity: 0.7;
    cursor: wait;
}

@media (max-width: 640px) {
    .page-header {
        align-items: stretch;
        flex-direction: column;
    }

    .chat-card {
        grid-template-columns: 1fr;
        padding: 20px;
        border-radius: 22px;
    }

    .messages {
        min-height: 300px;
    }

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

    .emotion-assets-grid {
        grid-template-columns: 1fr;
    }

    .admin-form-grid {
        grid-template-columns: 1fr;
    }

    .trait-row {
        grid-template-columns: 1fr;
    }

    .portrait-frame {
        max-width: 320px;
    }

    .form-footer {
        align-items: stretch;
        flex-direction: column;
    }

    button {
        width: 100%;
    }
}