:root {
    --primary: #00558c;
    --primary-dark: #003d66;
    --primary-light: #e8f2fa;
    --accent: #f5a623;
    --surface: #ffffff;
    --bg: #f4f7fb;
    --text: #1a2332;
    --text-muted: #4a5568;
    --focus-ring: #00558c;
    --border: #d8e2ed;
    --success: #1a7f4b;
    --error: #c0392b;
    --radius: 12px;
    --shadow: 0 4px 20px rgba(0, 40, 80, 0.08);
    --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

body {
    margin: 0;
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: min(1100px, 92vw);
    margin: 0 auto;
}

.site-header {
    background: var(--primary);
    color: #fff;
    padding: 0.9rem 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand-title {
    display: block;
    font-weight: 700;
    font-size: 1.1rem;
}

.brand-sub {
    font-size: 0.8rem;
    opacity: 0.85;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-label { font-size: 0.9rem; opacity: 0.9; }

.progress-bar-wrap {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 0;
}

.progress-steps {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.progress-step {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.step-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border);
}

.progress-step.done .step-dot { background: var(--success); }
.progress-step.active .step-dot { background: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.progress-step.active { color: var(--primary); font-weight: 600; }

.main-content {
    flex: 1;
    padding: 2rem 0 3rem;
}

.site-footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 1rem 0;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-align: center;
}

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

h1 { margin-top: 0; color: var(--primary-dark); font-size: 1.75rem; }
h2 { color: var(--primary-dark); font-size: 1.2rem; margin-top: 1.5rem; }

.lead { font-size: 1.05rem; color: var(--text-muted); }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    border: 2px solid transparent;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s, border-color 0.15s, transform 0.1s;
}

.btn:active { transform: scale(0.98); }

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

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

.btn-secondary {
    background: var(--primary-light);
    color: var(--primary-dark);
    border-color: var(--border);
}

.btn-secondary:hover { background: #d4e8f7; }

.btn-ghost {
    background: transparent;
    color: var(--primary);
    border-color: var(--border);
}

.btn-ghost:hover { background: var(--primary-light); }

.btn-sm { padding: 0.35rem 0.7rem; font-size: 0.82rem; }
.btn-lg { padding: 0.85rem 1.6rem; font-size: 1rem; }
.btn-block { width: 100%; }

.form-group { margin-bottom: 1.25rem; }

label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.4rem;
    font-size: 0.95rem;
}

.optional { font-weight: 400; color: var(--text-muted); font-size: 0.85rem; }

input[type="text"],
input[type="number"],
input[type="password"],
input[type="email"],
select,
textarea {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    background: #fff;
    transition: border-color 0.15s;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--primary);
}

:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

.field-error { color: var(--error); font-size: 0.85rem; display: block; margin-top: 0.25rem; }
.field-hint { color: var(--text-muted); font-size: 0.82rem; display: block; margin-top: 0.25rem; }

.radio-group { display: flex; flex-direction: column; gap: 0.5rem; }

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 0.35rem;
}

.question-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.required-mark {
    color: var(--error);
}

.radio-label, .checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    font-weight: 400;
    cursor: pointer;
}

.radio-label input, .checkbox-label input {
    width: auto;
    margin-top: 0.25rem;
}

.form-actions { margin-top: 1.5rem; display: flex; gap: 0.75rem; flex-wrap: wrap; }

.alert {
    padding: 0.85rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.alert-error, .alert-error { background: #fdecea; color: var(--error); border: 1px solid #f5c6cb; }
.alert-success { background: #e8f7ef; color: var(--success); border: 1px solid #b8e0c8; }
.alert-info { background: var(--primary-light); color: var(--primary-dark); }

.auth-card { max-width: 440px; margin: 2rem auto; }
.auth-footer { text-align: center; margin-top: 1.5rem; font-size: 0.9rem; }
.auth-footer a { color: var(--primary); }

.inline-form { display: inline; }

.intro-text p { margin-bottom: 1rem; }

.info-box {
    background: var(--primary-light);
    border-left: 4px solid var(--primary);
    padding: 1rem 1.25rem;
    border-radius: 0 8px 8px 0;
    margin: 1.5rem 0;
}

.gdpr-text {
    max-height: 50vh;
    overflow-y: auto;
    padding-right: 0.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    background: #fafbfc;
}

.gdpr-text ul { padding-left: 1.25rem; }
.version-tag { font-size: 0.8rem; color: var(--text-muted); }

.consent-checkbox {
    background: var(--primary-light);
    padding: 1rem;
    border-radius: 8px;
    border: 2px solid var(--border);
}

.ranking-card h1 { margin-top: 0; }

.ranking-card .lead {
    margin: 0.35rem 0;
}

.ranking-card .lead + .lead {
    margin-bottom: 0.75rem;
}

.ranking-personas-section {
    margin: 1rem 0 0.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.ranking-order-section {
    margin-top: 0;
}

.ranking-order-section h2,
.ranking-personas-section h2 {
    margin: 0 0 0.35rem;
    font-size: 1.1rem;
}

.persona-strip {
    list-style: none;
    margin: 1rem 0 0;
    padding: 0.75rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    min-height: 4rem;
    border: 2px dashed var(--border);
    border-radius: 10px;
    background: #fafbfc;
    transition: border-color 0.15s, background 0.15s;
}

.persona-strip.drag-over {
    border-color: var(--primary);
    background: var(--primary-light);
}

.persona-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.45rem;
    width: min(150px, 18vw);
    padding: 0.65rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: #fff;
    color: var(--text);
    cursor: grab;
    transition: border-color 0.15s, box-shadow 0.15s, opacity 0.15s;
}

.persona-card:active { cursor: grabbing; }
.persona-card.dragging { opacity: 0.45; border-style: dashed; }
.persona-card:hover { border-color: var(--primary); box-shadow: var(--shadow); }

.persona-card-in-slot {
    flex-direction: row;
    width: 100%;
    max-width: none;
    align-items: center;
    gap: 0.5rem;
    padding: 0.3rem 0.45rem;
    cursor: grab;
    border: none;
    box-shadow: none;
    background: transparent;
}

.persona-card-in-slot:hover {
    border: none;
    box-shadow: none;
}

.persona-card-slot-controls {
    display: none;
    gap: 0.15rem;
    flex-shrink: 0;
    align-items: center;
    margin-left: auto;
}

.persona-card-in-slot .persona-card-slot-controls:not([hidden]) {
    display: flex;
}

#persona-pool .persona-card-slot-controls {
    display: none !important;
}

.persona-card-slot-controls .btn {
    padding: 0.15rem 0.35rem;
    min-height: 1.5rem;
    min-width: 1.5rem;
    font-size: 0.78rem;
    line-height: 1;
}

.persona-card-slot-controls .btn-slot-clear {
    font-size: 1rem;
}

.persona-card-img-wrap {
    display: block;
    width: 100%;
    aspect-ratio: 1;
    overflow: hidden;
    border-radius: 6px;
    border: 1px solid var(--border);
    flex-shrink: 0;
    background: #eef2f6;
}

.persona-card-img {
    display: block;
    width: 200%;
    height: 200%;
    max-width: none;
    object-fit: cover;
    object-position: top left;
}

.persona-card-in-slot .persona-card-img-wrap {
    width: 40px;
    height: 40px;
    aspect-ratio: 1;
}

.persona-card-name {
    font-weight: 600;
    font-size: 0.82rem;
    text-align: center;
    line-height: 1.25;
}

.persona-card-in-slot .persona-card-name {
    flex: 1;
    text-align: left;
    font-size: 0.95rem;
}

.persona-card-view {
    flex-shrink: 0;
    color: var(--text-muted);
}

.persona-card-view:hover {
    color: var(--primary);
    border-color: var(--primary);
}

.hint-icon-loupe {
    display: inline-flex;
    vertical-align: middle;
    margin: 0 0.1rem;
    color: var(--text-muted);
}

.hint-icon-loupe .icon-loupe {
    display: block;
}

@media (max-width: 640px) {
    .persona-strip {
        flex-wrap: nowrap;
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 0.35rem;
    }

    .persona-card:not(.persona-card-in-slot) {
        width: 120px;
        flex-shrink: 0;
    }
}

.ranking-slots {
    list-style: none;
    margin: 0.5rem 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.ranking-slot {
    display: flex;
    align-items: stretch;
    gap: 0.4rem;
}

.ranking-slot-body {
    flex: 1;
    min-height: 2.5rem;
    display: flex;
    align-items: center;
    padding: 0.2rem 0.4rem;
    background: #fafbfc;
    border: 2px dashed var(--border);
    border-radius: 8px;
    transition: border-color 0.15s, background 0.15s;
}

.ranking-slot-filled .ranking-slot-body {
    border-style: solid;
    padding: 0.15rem 0.35rem;
    min-height: auto;
}

.ranking-slot-body.drag-over {
    border-color: var(--accent);
    background: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.2);
}

.ranking-slot-empty {
    width: 100%;
}

.ranking-slot-empty-idle {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.3rem 0.45rem;
    width: 100%;
    padding: 0.15rem 0;
}

.ranking-slot-placeholder {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.ranking-slot-or {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.ranking-slot-picker {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    width: 100%;
    padding: 0.15rem 0;
}

.ranking-slot-picker[hidden],
.ranking-slot-empty-idle[hidden],
.ranking-slot-empty[hidden] {
    display: none !important;
}

.ranking-slot-select {
    flex: 1 1 10rem;
    min-width: 8rem;
    max-width: 100%;
    padding: 0.4rem 0.55rem;
    font-size: 0.88rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #fff;
}

.persona-card-slot-controls .btn-slot-up:disabled,
.persona-card-slot-controls .btn-slot-down:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.rank-badge {
    width: 28px;
    height: 28px;
    font-size: 0.85rem;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

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

.save-status {
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: var(--success);
    min-height: 1.2em;
}

.ranking-actions {
    justify-content: space-between;
    margin-top: 1rem;
}

.completed-card { text-align: center; max-width: 600px; margin: 2rem auto; }

.completed-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--success);
    color: #fff;
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.persona-nav {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-top: 0.75rem;
}

.persona-nav .active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

/* Skip link */
.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
    z-index: 100;
    padding: 0.75rem 1.25rem;
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    text-decoration: none;
    border-radius: 0 0 8px 0;
}

.skip-link:focus {
    position: fixed;
    left: 0;
    top: 0;
    width: auto;
    height: auto;
    overflow: visible;
}

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

kbd {
    display: inline-block;
    padding: 0.1em 0.4em;
    font-size: 0.85em;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 4px;
    box-shadow: 0 1px 0 var(--border);
}

/* Persona viewer */
.viewer-page { max-width: none; padding: 0; }

/* Expanded view: CSS-only, no browser fullscreen API */
html.viewer-expanded,
body.viewer-expanded {
    overflow: hidden;
    height: 100%;
}

body.viewer-expanded .site-header,
body.viewer-expanded .progress-bar-wrap,
body.viewer-expanded .site-footer,
body.viewer-expanded .messages {
    display: none !important;
}

body.viewer-expanded .main-content,
body.viewer-expanded main.container.main-content {
    width: 100%;
    max-width: none;
    margin: 0;
    padding: 0;
    min-height: 0;
    height: 100dvh;
}

body.viewer-expanded .viewer-page,
.viewer-page.viewer-immersive {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100dvh;
    max-width: none;
    background: #1a1a2e;
    overflow: hidden;
}

.viewer-toolbar {
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.65rem;
    flex-wrap: wrap;
}

.viewer-back-link {
    flex-shrink: 0;
}

.viewer-title {
    flex: 1;
    min-width: 0;
}

.viewer-canvas {
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: #1a1a2e;
    padding: 1rem;
    cursor: pointer;
}

.viewer-card {
    cursor: default;
    max-width: 100%;
}

.viewer-image-wrap {
    position: relative;
    display: inline-block;
    line-height: 0;
}

.viewer-image-frame {
    position: relative;
    display: inline-block;
    line-height: 0;
}

.viewer-image-wrap.loupe-active {
    cursor: crosshair;
}

.viewer-image-wrap.loupe-active .viewer-image-frame {
    cursor: crosshair;
}

.viewer-img-btn {
    position: absolute;
    z-index: 6;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    border: none;
    border-radius: 6px;
    background: rgba(26, 26, 46, 0.82);
    color: #f0f4f8;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.15s, background 0.15s;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
}

.viewer-img-btn:hover,
.viewer-img-btn:focus-visible {
    background: rgba(26, 26, 46, 0.95);
}

.viewer-img-btn:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 2px;
    opacity: 1;
}

.viewer-img-btn[aria-pressed="true"] {
    background: var(--primary);
    color: #fff;
}

.viewer-image-frame:hover .viewer-img-btn,
.viewer-image-frame:focus-within .viewer-img-btn {
    opacity: 1;
}

.viewer-img-expand {
    right: 0.5rem;
    bottom: 0.5rem;
}

.viewer-img-back {
    top: 0.5rem;
    left: 0.5rem;
}

.viewer-hint {
    position: absolute;
    left: 50%;
    bottom: 0.75rem;
    transform: translateX(-50%);
    z-index: 6;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    background: rgba(26, 26, 46, 0.82);
    color: #f0f4f8;
    font-size: 0.8rem;
    line-height: 1;
    white-space: nowrap;
    pointer-events: none;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.viewer-hint.is-visible {
    opacity: 1;
}

.viewer-hint svg {
    flex-shrink: 0;
}

@media (prefers-reduced-motion: reduce) {
    .viewer-hint {
        transition: none;
    }
}

.viewer-img-loupe {
    top: 0.5rem;
    right: 0.5rem;
}

@media (hover: none) {
    .viewer-img-btn {
        opacity: 0.9;
    }
}

.viewer-image-wrap img {
    max-width: 100%;
    max-height: calc(100vh - 220px);
    width: auto;
    height: auto;
    object-fit: contain;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    display: block;
}

.btn-icon {
    padding: 0.45rem 0.55rem;
    min-width: 2.25rem;
    min-height: 2.25rem;
}

.btn-icon[aria-pressed="true"] {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary-dark);
}

.viewer-loupe {
    position: absolute;
    width: min(42vw, 320px);
    height: min(42vw, 320px);
    border-radius: 50%;
    border: 4px solid #fff;
    box-shadow: 0 6px 32px rgba(0, 0, 0, 0.55), inset 0 0 0 1px rgba(0, 0, 0, 0.15);
    pointer-events: none;
    background-repeat: no-repeat;
    background-color: #fff;
    opacity: 0;
    transition: opacity 0.15s;
    z-index: 5;
}

@media (max-width: 640px) {
    .viewer-loupe {
        width: min(72vw, 280px);
        height: min(72vw, 280px);
    }
}

.viewer-page.viewer-immersive .viewer-loupe,
body.viewer-expanded .viewer-loupe {
    width: min(52vw, 560px);
    height: min(52vw, 560px);
}

.viewer-footer {
    padding: 1rem 0 1.5rem;
    flex-shrink: 0;
}

.viewer-footer[hidden],
.viewer-toolbar[hidden] {
    display: none !important;
}

body.viewer-expanded .viewer-toolbar,
body.viewer-expanded .viewer-footer,
.viewer-page.viewer-immersive .viewer-toolbar,
.viewer-page.viewer-immersive .viewer-footer {
    display: none !important;
}

body.viewer-expanded .viewer-canvas,
.viewer-page.viewer-immersive .viewer-canvas {
    flex: 1 1 auto;
    min-height: 0;
    width: 100%;
    height: 100%;
    padding: 0;
    cursor: default;
    overflow: auto;
    align-items: safe center;
    justify-content: safe center;
}

body.viewer-expanded .viewer-card,
.viewer-page.viewer-immersive .viewer-card {
    flex: 0 0 auto;
    width: auto;
    height: auto;
    max-width: none;
    max-height: none;
    margin: auto;
}

body.viewer-expanded .viewer-image-wrap,
.viewer-page.viewer-immersive .viewer-image-wrap {
    display: block;
    width: auto;
    height: auto;
    max-width: none;
    max-height: none;
}

body.viewer-expanded .viewer-image-frame,
.viewer-page.viewer-immersive .viewer-image-frame {
    display: block;
    max-width: none;
    max-height: none;
}

body.viewer-expanded .viewer-image-wrap img,
.viewer-page.viewer-immersive .viewer-image-wrap img {
    display: block;
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 100dvh;
    object-fit: contain;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

body.viewer-expanded.viewer-zoomed .viewer-image-frame,
.viewer-page.viewer-immersive.viewer-zoomed .viewer-image-frame {
    cursor: grab;
}

body.viewer-expanded .viewer-canvas.panning,
.viewer-page.viewer-immersive .viewer-canvas.panning,
body.viewer-expanded.viewer-zoomed .viewer-canvas.panning .viewer-image-frame {
    cursor: grabbing;
}

/* Accessible dialog */
.dialog-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.dialog-backdrop[hidden] {
    display: none;
}

.dialog-panel {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.5rem;
    max-width: 420px;
    width: 100%;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border);
}

.dialog-panel h2 {
    margin-top: 0;
    font-size: 1.2rem;
}

.dialog-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
    margin-top: 1.25rem;
    flex-wrap: wrap;
}

.ranking-announce {
    margin-top: 0.5rem;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .ranking-item.dragging { opacity: 0.8; }
    .viewer-loupe { transition: none; }
    .btn:active { transform: none; }
}