/* Practice & Revision page styles */
.practice-page {
    font-family: 'Hind Siliguri', sans-serif;
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
    min-height: 100vh;
}

.practice-hero {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: white;
    border-bottom: 3px solid #F7DF1E;
}

/* Mobile: hero padding and text */
@media (max-width: 639px) {
    .practice-hero {
        padding-top: 1.5rem;
        padding-bottom: 1.5rem;
    }
    .practice-hero h1 {
        font-size: 1.5rem;
        line-height: 1.3;
    }
    .practice-hero p {
        font-size: 0.9375rem;
    }
}

.practice-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid #e2e8f0;
}
.practice-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
}

.question-item {
    border-left: 4px solid transparent;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}
.question-item:hover {
    background-color: #f8fafc;
}
.question-item.revision-marked {
    border-left-color: #F59E0B;
    background-color: #fffbeb;
}
.question-item.revision-marked:hover {
    background-color: #fef3c7;
}

/* Mobile: question card padding and action buttons touch-friendly */
@media (max-width: 767px) {
    .question-item {
        padding: 1rem;
    }
    .question-item .btn-xs {
        min-width: 2.5rem;
        min-height: 2.5rem;
        padding: 0.5rem;
    }
    .topic-section {
        padding: 1rem;
    }
}

.level-badge-beginner { background-color: #dbeafe; color: #1d4ed8; }
.level-badge-intermediate { background-color: #d1fae5; color: #047857; }
.level-badge-advanced { background-color: #fce7f3; color: #9d174d; }

.filter-pill {
    transition: all 0.2s ease;
}
.filter-pill:hover {
    transform: scale(1.02);
}
.filter-pill.active {
    box-shadow: 0 0 0 2px currentColor;
}

/* Mobile: larger touch targets for filter pills (min 44px) */
@media (max-width: 767px) {
    .filter-pill {
        min-height: 2.75rem;
        padding-left: 1rem;
        padding-right: 1rem;
        font-size: 0.875rem;
    }
}

.revision-only-banner {
    background: linear-gradient(90deg, #fef3c7 0%, #fde68a 100%);
    border: 1px solid #f59e0b;
}

.topic-section {
    scroll-margin-top: 6rem;
}

/* Sidebar: same feel as Documentation page */
.practice-sidebar-nav {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(226, 232, 240, 0.9);
}

.practice-nav-link.active {
    background: rgba(247, 223, 30, 0.15);
    color: #323330;
}

/* Mobile: sidebar touch-friendly and scrollable */
@media (max-width: 1023px) {
    .practice-sidebar-nav {
        max-height: 16rem;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    .practice-nav-link {
        min-height: 2.75rem;
        padding-top: 0.625rem;
        padding-bottom: 0.625rem;
        display: flex;
        align-items: center;
    }
}

.question-num {
    min-width: 1.5rem;
    display: inline-block;
}

/* Tick button: "প্র্যাকটিস করেছি" — ক্লিক করলে এই প্রশ্নের প্র্যাকটিস কাউন্ট বাড়ে */
.practice-done-btn {
    white-space: nowrap;
}
.practice-done-label {
    font-size: 0.7rem;
    margin-left: 0.25rem;
}
@media (max-width: 480px) {
    .practice-done-label {
        display: none;
    }
}

/* Sidebar: topic text one line, allow width for full text */
.practice-sidebar-text {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

@media (min-width: 1024px) {
    .practice-sidebar-nav {
        min-width: 18rem;
    }
}

/* Smooth expand for topic body */
.topic-body {
    animation: topicExpand 0.25s ease-out;
}
@keyframes topicExpand {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

.code-font {
    font-family: 'Fira Code', monospace;
}

.empty-state-icon {
    opacity: 0.6;
}

/* Hint & Answer tooltips — readable length and wrap */
[data-tip] {
    max-width: 20rem;
}
.tooltip::before {
    white-space: normal;
    max-width: 20rem;
    text-align: left;
}

/* Mobile: revision banner and main content spacing */
@media (max-width: 767px) {
    .revision-only-banner {
        padding: 0.75rem 1rem;
        gap: 0.5rem;
    }
    .revision-only-banner .btn {
        min-height: 2.5rem;
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
    #practice-topics {
        min-height: 12rem;
    }
}

/* Ensure filter row wraps cleanly on small screens */
.practice-page section.py-6 .flex.flex-wrap {
    row-gap: 0.5rem;
}