:root {
    --primary: #2563eb;
    --primary-light: #eff6ff;
    --white: #ffffff;
    --bg-light: #f1f5f9; /* Slightly darker to make cards pop */
    --card-bg: #ffffff;
    --border: #e2e8f0;
    --text-dark: #0f172a;
    --text-grey: #64748b;
}

body.dark-mode {
    --bg-light: #020617; 
    --white: #0f172a;
    --card-bg: #1e293b;
    --text-dark: #f1f5f9; 
    --text-grey: #94a3b8; 
    --border: #334155;
}

.exam-page-container { display: flex; flex-direction: column; height: 100vh; overflow: hidden; }

/* Sticky Header & Filter Area */
.sticky-header-section { 
    flex-shrink: 0; 
    background: var(--white); 
    z-index: 1000; 
    box-shadow: 0 2px 10px rgba(0,0,0,0.05); 
}

/* --- TESTBOOK STYLE FILTERS --- */
.filter-scroll-wrapper { 
    display: flex; 
    overflow-x: auto; 
    gap: 0; 
    padding: 0 5px; 
    scrollbar-width: none;
    border-bottom: 1px solid var(--border);
}
.filter-scroll-wrapper::-webkit-scrollbar { display: none; }

.pill-filter {
    white-space: nowrap; 
    padding: 12px 16px; 
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    font-size: 13px; 
    font-weight: 700; 
    color: var(--text-grey); 
    cursor: pointer;
    border-radius: 0; /* Remove elliptical shape */
    transition: 0.2s;
}
.pill-filter.active { 
    color: var(--primary);
    border-bottom-color: var(--primary);
    background: transparent;
}

/* Search Box Smaller */
.search-input-wrap { padding: 8px 15px; }
.search-input-wrap input {
    width: 100%; 
    padding: 8px 15px; 
    border-radius: 8px; 
    border: 1px solid var(--border);
    background: var(--bg-light); 
    color: var(--text-dark); 
    font-size: 14px;
}

/* Scrollable Grid */
.scrollable-grid-area { 
    flex-grow: 1; 
    overflow-y: auto; 
    padding: 12px 12px 100px; 
    background: var(--bg-light); /* Page background different from cards */
    -webkit-overflow-scrolling: touch; 
}

/* --- HORIZONTAL MOCK CARD --- */
.mock-card {
    background: var(--card-bg); 
    border-radius: 12px; 
    padding: 12px 15px; 
    margin-bottom: 10px;
    border: 1px solid var(--border); 
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    display: flex;
    flex-direction: row; /* Horizontal layout */
    align-items: center; 
    justify-content: space-between;
    gap: 10px;
}

.card-info { flex: 1; min-width: 0; } /* Allow text to wrap/truncate */

.card-title { 
    font-size: 14px; 
    font-weight: 700; 
    color: var(--text-dark); 
    display: block;
    line-height: 1.3;
}

.card-meta { 
    font-size: 11px; 
    color: var(--text-grey); 
    font-weight: 600; 
    margin-top: 4px; 
}

/* Action Buttons Rightward */
.btn-grid { 
    flex-shrink: 0; 
    display: flex; 
    flex-direction: column; 
    gap: 5px; 
    min-width: 100px;
}

.action-btn {
    border-radius: 6px; 
    padding: 7px 12px; 
    font-size: 12px; 
    font-weight: 800;
    text-align: center; 
    text-decoration: none; 
    border: none; 
    cursor: pointer;
    width: 100%;
}

.start-btn { background: var(--primary); color: white; }
.resume-btn { background: #16a34a; color: white; }
.analysis-btn { background: #4f46e5; color: white; }
.reattempt-btn { background: transparent; color: var(--primary); border: 1px solid var(--primary); padding: 6px 11px; }
.unlock-btn { background: linear-gradient(135deg, #f59e0b, #d97706); color: white; }

/* Score Bar below text */
.score-row { 
    margin-top: 8px;
    display: flex; 
    align-items: center; 
    gap: 8px; 
}
/* Score Bar below text */
.score-row { 
    margin-top: 8px;
    display: flex; 
    align-items: center; 
    gap: 8px; 
}
.score-bar-bg { width: 60px; height: 4px; background: var(--bg-light); border-radius: 10px; overflow: hidden; }
.score-bar-fill { height: 100%; }
.score-text { font-size: 11px; font-weight: 800; color: var(--text-dark); }
@media (min-width: 992px) {
    /* Container for the bar and text */
    .score-row { 
        width: 400px; /* Specific width for Desktop */
        margin-top: 12px;
        display: flex; 
        flex-direction: column; 
        gap: 4px; 
    }

    /* Desktop Background: 400px wide */
    .score-bar-bg { 
        width: 400px; 
        height: 6px; 
        background: var(--bg-light); 
        border-radius: 2px; /* Rectangular look */
        overflow: hidden; 
    }
        }
/* Badges */
.badge-type { font-size: 8px; padding: 2px 5px; border-radius: 3px; font-weight: 900; vertical-align: middle; }
.free-badge { background: #dcfce7; color: #166534; }
.paid-badge { background: #fef3c7; color: #92400e; }

.hidden { display: none !important; }