:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #f59e0b;
    --bg: #f8fafc;
    --surface: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
    min-height: 100dvh;
}

.app-header {
    background: var(--primary);
    color: white;
    padding: 0.75rem 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}
.app-header h1 {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    outline: none;
}
.app-header .subtitle {
    font-size: 0.8rem;
    opacity: 0.85;
}

.app-content {
    padding: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

.card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1rem;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border);
}
.card-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 0.25rem;
}
.card-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: 0 0 0.5rem;
}

.badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.badge-active { background: #dcfce7; color: #166534; }
.badge-closed { background: #fee2e2; color: #991b1b; }
.badge-draft { background: #fef3c7; color: #92400e; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.65rem 1.25rem;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
    -webkit-appearance: none;
    appearance: none;
    touch-action: manipulation;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-outline {
    background: transparent;
    border: 2px solid var(--border);
    color: var(--text);
}
.btn-block { width: 100%; }
.btn-lg { padding: 0.85rem 1.5rem; font-size: 1rem; }
.btn-link {
    background: none;
    border: none;
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0;
    text-decoration: underline;
}

.form-select {
    padding: 0.6rem 0.75rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    background: var(--surface);
    color: var(--text);
    -webkit-appearance: none;
    appearance: none;
}

.form-group { margin-bottom: 1rem; }
.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
    color: var(--text);
}
.form-input, .form-textarea {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    background: var(--surface);
    color: var(--text);
    transition: border-color 0.15s;
    -webkit-appearance: none;
    appearance: none;
}
.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}
.form-textarea { resize: vertical; min-height: 80px; }

.option-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border: 2px solid var(--border);
    border-radius: 10px;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: all 0.15s;
    -webkit-user-select: none;
    user-select: none;
    touch-action: manipulation;
}
.option-card:active { transform: scale(0.98); }
.option-card.selected {
    border-color: var(--primary);
    background: #eff6ff;
}
.option-radio, .option-check {
    width: 22px;
    height: 22px;
    border: 2px solid #cbd5e1;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}
.option-check { border-radius: 6px; }
.option-card.selected .option-radio,
.option-card.selected .option-check {
    border-color: var(--primary);
    background: var(--primary);
}
.option-card.selected .option-radio::after {
    content: '';
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
}
.option-card.selected .option-check::after {
    content: '';
    width: 12px;
    height: 8px;
    border-left: 2.5px solid white;
    border-bottom: 2.5px solid white;
    transform: rotate(-45deg) translateY(-1px);
}
.option-text { font-size: 0.95rem; }

.question-block {
    margin-bottom: 1.5rem;
}
.question-number {
    font-size: 0.75rem;
    color: var(--primary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}
.question-text {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}
.question-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
    min-height: 80dvh;
    padding: 2rem 1rem;
    text-align: center;
}
.login-container h2 {
    font-size: 1.5rem;
    margin: 0 0 0.5rem;
}
.login-container p {
    color: var(--text-muted);
    margin: 0 0 1.5rem;
    font-size: 0.9rem;
}
.login-box {
    width: 100%;
    max-width: 360px;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    margin-bottom: 1rem;
}
.alert-danger { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }
.alert-info { background: #eff6ff; color: #1e40af; border: 1px solid #bfdbfe; }

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}
.empty-state svg { width: 64px; height: 64px; margin-bottom: 1rem; opacity: 0.4; }

.result-bar-container {
    margin-bottom: 0.5rem;
}
.result-bar-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    margin-bottom: 0.2rem;
}
.result-bar {
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}
.result-bar-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 4px;
    transition: width 0.5s ease;
}

.spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.loading-center {
    display: flex;
    justify-content: center;
    padding: 3rem;
}

.blazor-error-boundary {
    background: var(--danger);
    padding: 1rem;
    color: white;
    border-radius: 8px;
    margin: 1rem;
}
.blazor-error-boundary::after { content: "An error has occurred."; }

#blazor-error-ui {
    background: var(--danger);
    color: white;
    padding: 0.5rem 1rem;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    text-align: center;
    display: none;
}
#blazor-error-ui .reload { color: white; text-decoration: underline; }
#blazor-error-ui .dismiss { color: white; cursor: pointer; margin-left: 1rem; }