/* =========================================================================
   TeachCloud Git & GitHub Studio Stylesheet
   DevOps Blue & Slate Palette, Terminal Simulator & Cross-Platform UI
   ========================================================================= */

.git-studio-container {
    max-width: 1200px;
    margin: 1.5rem auto 3.5rem;
    padding: 0 1rem;
}

.git-master-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.25);
    transition: var(--transition);
}

.git-studio-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.75rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.git-studio-title-badge {
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #38bdf8;
}

.git-studio-title {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0.25rem 0 0;
}

.git-level-nav {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
}

.git-level-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.9rem;
    font-size: 0.84rem;
    font-weight: 700;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.git-level-btn:hover {
    color: #38bdf8;
    border-color: #3b82f6;
    transform: translateY(-1px);
}

.git-level-btn.active {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.25), rgba(56, 189, 248, 0.18));
    border-color: #3b82f6;
    color: #ffffff;
    box-shadow: 0 2px 10px rgba(37, 99, 235, 0.25);
}

.git-tabs-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding-bottom: 0.85rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.git-tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1rem;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.git-tab-btn:hover {
    color: #38bdf8;
    border-color: rgba(59, 130, 246, 0.45);
}

.git-tab-btn.active {
    background: rgba(37, 99, 235, 0.15);
    border-color: #3b82f6;
    color: #38bdf8;
    font-weight: 700;
}

.git-tab-content {
    animation: fadeIn 0.2s ease-in-out;
}

.git-cmd-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 1.5rem;
    overflow: hidden;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.git-cmd-card:hover {
    border-color: rgba(59, 130, 246, 0.45);
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.15);
}

.git-cmd-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.85rem 1.25rem;
    background: rgba(37, 99, 235, 0.05);
    border-bottom: 1px solid var(--border-color);
}

.git-cmd-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.git-cmd-badge {
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.2rem 0.55rem;
    border-radius: 4px;
    background: rgba(56, 189, 248, 0.15);
    color: #38bdf8;
}

.git-cmd-body {
    padding: 1.25rem;
}

.git-cmd-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0 0 1rem;
}

.git-code-box {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #0f172a;
    border: 1px solid #1e293b;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.88rem;
    margin-bottom: 0.75rem;
    overflow-x: auto;
}

.git-code-prompt {
    color: #38bdf8;
    font-weight: 700;
    margin-right: 0.6rem;
    user-select: none;
}

.git-code-text {
    color: #f8fafc;
    font-weight: 600;
}

.btn-run-cmd {
    background: linear-gradient(135deg, #1d4ed8, #2563eb);
    color: #ffffff;
    border: none;
    padding: 0.35rem 0.85rem;
    border-radius: 6px;
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.15s ease;
}

.btn-run-cmd:hover {
    background: linear-gradient(135deg, #2563eb, #3b82f6);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.git-cmd-output {
    display: none;
    background: #090d16;
    border: 1px solid #1e293b;
    border-radius: 8px;
    padding: 0.85rem 1rem;
    color: #e2e8f0;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.82rem;
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-all;
    margin-top: 0.75rem;
}

/* Master Git Terminal Simulator */
.git-terminal-wrapper {
    background: #0b0f19;
    border: 1px solid #1e293b;
    border-radius: 12px;
    margin-top: 2rem;
    overflow: hidden;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}

.git-terminal-header {
    background: #111827;
    padding: 0.65rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #1f2937;
}

.git-terminal-dots {
    display: flex;
    gap: 0.35rem;
}

.git-terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.git-terminal-dot.red { background: #ef4444; }
.git-terminal-dot.yellow { background: #f59e0b; }
.git-terminal-dot.green { background: #10b981; }

.git-terminal-title {
    font-size: 0.78rem;
    font-weight: 700;
    color: #94a3b8;
    font-family: 'JetBrains Mono', monospace;
}

.git-terminal-screen {
    padding: 1.25rem;
    min-height: 200px;
    max-height: 380px;
    overflow-y: auto;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.84rem;
    color: #e2e8f0;
    line-height: 1.5;
}

.git-terminal-input-bar {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    background: #0f172a;
    border-top: 1px solid #1e293b;
    gap: 0.5rem;
}

.git-terminal-prompt-label {
    color: #38bdf8;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    white-space: nowrap;
}

.git-terminal-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: #f8fafc;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.88rem;
}

.git-terminal-btn {
    background: #1e293b;
    border: 1px solid #334155;
    color: #cbd5e1;
    padding: 0.35rem 0.75rem;
    border-radius: 6px;
    font-size: 0.76rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.15s ease;
}

.git-terminal-btn:hover {
    background: #2563eb;
    color: #fff;
    border-color: #3b82f6;
}

.git-terminal-quick-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    align-items: center;
    padding: 0.65rem 1rem;
    background: #090d16;
    border-top: 1px solid #151f32;
}

.quick-chip {
    background: rgba(56, 189, 248, 0.08);
    border: 1px solid rgba(56, 189, 248, 0.25);
    color: #38bdf8;
    padding: 0.2rem 0.55rem;
    border-radius: 4px;
    font-size: 0.72rem;
    font-family: 'JetBrains Mono', monospace;
    cursor: pointer;
    transition: all 0.15s ease;
}

.quick-chip:hover {
    background: #2563eb;
    color: #fff;
    border-color: #3b82f6;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Intro / Curriculum Index Button Styles */
.git-level-btn[data-level="intro"] {
    border-color: rgba(59, 130, 246, 0.4);
    color: #60a5fa;
}
.git-level-btn[data-level="intro"]:hover {
    border-color: #3b82f6;
    color: #93c5fd;
}
.git-level-btn[data-level="intro"].active {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.25), rgba(30, 58, 138, 0.2));
    border-color: #3b82f6;
    color: #ffffff;
    box-shadow: 0 0 16px rgba(37, 99, 235, 0.35);
}

/* Git Flowchart Button Styles */
.git-level-btn[data-level="flowchart"] {
    border-color: rgba(6, 182, 212, 0.4);
    color: #22d3ee;
}
.git-level-btn[data-level="flowchart"]:hover {
    border-color: #06b6d4;
    color: #67e8f9;
}
.git-level-btn[data-level="flowchart"].active {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.25), rgba(14, 165, 233, 0.2));
    border-color: #06b6d4;
    color: #ffffff;
    box-shadow: 0 0 16px rgba(6, 182, 212, 0.35);
}

.git-tab-btn[data-level="intro"].active {
    background: rgba(37, 99, 235, 0.15);
    border-color: #3b82f6;
    color: #60a5fa;
}

.git-tab-btn[data-level="flowchart"].active {
    background: rgba(6, 182, 212, 0.15);
    border-color: #06b6d4;
    color: #22d3ee;
}

/* Installation Methods 2x2 + Full Width Grid */
.git-install-options-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.git-install-options-grid > .git-install-full-width,
.git-install-options-grid > div:last-child {
    grid-column: 1 / -1;
}

@media (max-width: 860px) {
    .git-install-options-grid {
        grid-template-columns: 1fr;
    }
}

/* ── All Git Commands Directory Tab Styles ───────────────────────────────── */
.git-level-btn[data-level="commands"] {
    border-color: rgba(59, 130, 246, 0.4);
    color: #60a5fa;
}
.git-level-btn[data-level="commands"]:hover {
    border-color: #3b82f6;
    color: #93c5fd;
}
.git-level-btn[data-level="commands"].active {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.25), rgba(99, 102, 241, 0.2));
    border-color: #3b82f6;
    color: #ffffff;
    box-shadow: 0 0 16px rgba(59, 130, 246, 0.35);
}

.git-tab-btn[data-level="commands"].active {
    background: rgba(59, 130, 246, 0.15);
    border-color: #3b82f6;
    color: #60a5fa;
}

.git-category-filter-btn {
    padding: 0.4rem 0.85rem;
    font-size: 0.78rem;
    font-weight: 700;
    border-radius: 9999px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s ease;
}
.git-category-filter-btn:hover {
    border-color: #3b82f6;
    color: #93c5fd;
}
.git-category-filter-btn.active {
    background: #3b82f6;
    border-color: #3b82f6;
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.git-commands-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.git-discipline-card:hover {
    transform: translateY(-4px);
    border-color: #3b82f6 !important;
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.2) !important;
}

/* Git Masterclass Quiz Styling */
.git-quiz-card {
    background: #111827;
    border: 1.5px solid #2d3b52;
    border-radius: 12px;
    padding: 1.35rem;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
    transition: all 0.2s ease;
}

.git-quiz-card.answered-correct {
    border-color: #10b981;
    background: linear-gradient(135deg, #111827, #062419);
}

.git-quiz-card.answered-wrong {
    border-color: #ef4444;
    background: linear-gradient(135deg, #111827, #240b0e);
}

.git-quiz-qhead {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.65rem;
}

.git-quiz-qnum {
    font-size: 0.78rem;
    color: #fb923c;
    background: rgba(249, 115, 22, 0.15);
    border: 1px solid #f97316;
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    font-weight: 800;
    letter-spacing: 0.03em;
}

.git-quiz-qtitle {
    color: #ffffff !important;
    font-size: 1.05rem;
    font-weight: 800;
    margin: 0 0 1rem;
    line-height: 1.5;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.git-quiz-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 0.75rem;
}

.git-quiz-btn {
    background: #1e293b;
    border: 1.5px solid #475569;
    color: #ffffff !important;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    text-align: left;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.7rem;
    transition: all 0.15s ease;
}

.git-quiz-btn:hover:not(:disabled) {
    background: #0f172a;
    border-color: #f97316;
    color: #fb923c !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.2);
}

.git-quiz-opt-tag {
    background: #0f172a;
    border: 1px solid #f97316;
    border-radius: 6px;
    font-weight: 800;
    font-size: 0.8rem;
    padding: 0.15rem 0.5rem;
    color: #fb923c;
    flex-shrink: 0;
}

.git-quiz-btn.correct {
    background: #064e3b !important;
    border-color: #34d399 !important;
    color: #ffffff !important;
    font-weight: 800;
    box-shadow: 0 0 12px rgba(52, 211, 153, 0.35);
}

.git-quiz-btn.correct .git-quiz-opt-tag {
    background: #10b981;
    color: #ffffff;
    border-color: #34d399;
}

.git-quiz-btn.wrong {
    background: #7f1d1d !important;
    border-color: #f87171 !important;
    color: #ffffff !important;
    font-weight: 800;
}

.git-quiz-btn.wrong .git-quiz-opt-tag {
    background: #ef4444;
    color: #ffffff;
    border-color: #f87171;
}

.git-quiz-explain {
    margin-top: 1rem;
    padding: 0.85rem 1.15rem;
    background: #090e1a;
    border-left: 4px solid #f97316;
    border-radius: 0 8px 8px 0;
    font-size: 0.88rem;
    color: #e2e8f0 !important;
    line-height: 1.6;
    display: none;
}

.git-quiz-explain.visible {
    display: block;
    animation: gitFade 0.2s ease-out;
}