html[data-bg="1"] body { background: lightblue !important; }
html[data-bg="2"] body { background: lightcoral !important; }
html[data-bg="3"] body { background: lightgreen !important; }

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg-main: #e0f5e0;
    --bg-sidebar: #c0f0c0;
    --bg-card: #b3e6b3;
    --accent: #28a745;
    --accent-hover: #218838;
    --text-main: #0e4a1a;
    --text-muted: #2e6b3f;
    --border: #69b469;
}

body {
    font-family: 'Segoe UI', Tahoma, sans-serif;
    background: linear-gradient(135deg, #e0f5e0, #c0f0c0);
    color: var(--text-main);
    min-height: 100vh;
}

.hero {
    position: relative;
    height: 220px;
    background: linear-gradient(135deg, #69b469, #28a745);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 3px solid var(--accent);
    box-shadow: 0 4px 20px rgba(40, 167, 69, 0.3);
}

.hero-text { text-align: center; z-index: 1; }
.hero-text h1 { font-size: 2.4rem; color: white; text-shadow: 0 0 20px rgba(40, 167, 69, 0.5); }
.hero-text p { color: #e0f5e0; margin-top: 8px; font-size: 1.1rem; }

.menu {
    background: linear-gradient(90deg, #28a745, #69b469);
    color: white;
    padding: 20px;
    text-align: center;
    font-weight: 600;
    letter-spacing: 1px;
    box-shadow: 0 2px 10px rgba(40, 167, 69, 0.3);
}

.layout { display: flex; min-height: calc(100vh - 220px); }

.sidebar-menu {
    width: 260px;
    background-color: var(--bg-sidebar);
    border-right: 2px solid var(--border);
    padding: 20px;
    box-shadow: 2px 0 15px rgba(40, 167, 69, 0.2);
}

.sidebar-menu h2 { font-size: 1.2rem; color: var(--accent); margin-bottom: 20px; }
.sidebar-menu h3 { font-size: 0.95rem; color: var(--text-muted); margin: 20px 0 10px; font-weight: 500; }

.js-activities { list-style: none; }
.js-activities li { margin-bottom: 8px; }
.js-activities button {
    width: 100%;
    padding: 10px;
    background: linear-gradient(135deg, var(--bg-card), #c0f0c0);
    border: 1px solid var(--border);
    color: var(--text-main);
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.25s ease;
    text-align: left;
    font-size: 0.9rem;
}
.js-activities button:hover {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: white;
    transform: translateX(4px);
    border-color: var(--accent);
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.4);
}

main { flex: 1; padding: 30px; }
.content-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.about-card, .output-card, .console-card {
    background: linear-gradient(135deg, var(--bg-card), #c0f0c0);
    padding: 25px;
    border-radius: 15px;
    border: 2px solid var(--border);
    box-shadow: 0 6px 20px rgba(40, 167, 69, 0.2);
    position: relative;
    overflow: hidden;
}

.about-card { grid-column: 1 / 2; }
.output-card { grid-column: 2 / 3; grid-row: 1 / 3; display: flex; flex-direction: column; }
.console-card { grid-column: 1 / 2; }

.card-icon {
    position: absolute; top: 15px; right: 15px;
    background: var(--accent); color: white;
    padding: 5px 12px; border-radius: 20px;
    font-size: 0.7rem; font-weight: 600; letter-spacing: 1px;
}

.about-card h2, .output-card h2, .console-card h2 { color: var(--accent); margin-bottom: 15px; font-size: 1.4rem; }
.about-card p, .console-card p { color: var(--text-muted); line-height: 1.6; }

.output-content {
    flex: 1; display: flex; flex-direction: column;
    align-items: center; justify-content: center; min-height: 300px;
}

.output-message { color: var(--text-muted); font-style: italic; margin-bottom: 20px; }

/* ===== FIX: #movieImg hidden by default, shown only by JS ===== */
#movieImg {
    display: none;
    width: 100%;
    max-width: 320px;
    height: auto;
    border-radius: 10px;
    margin-top: 10px;
    border: 3px solid var(--accent);
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
    object-fit: cover;
}

#movieImg.visible { display: block; }

#movieImg {

    display: none;

    margin-top: 15px;

    border-radius: 8px;

    border: 2px solid var(--accent);

    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);

    max-width: 300px;

    height: auto;

}

footer {
    text-align: center; padding: 15px; font-size: 0.85rem;
    background: linear-gradient(90deg, #c0f0c0, #b3e6b3);
    border-top: 2px solid var(--accent); color: var(--text-muted);
}

.todo-card, .char-counter-card, #todo-container-8,
#calculator-container, #todo-container, #grade-calculator-container {
    background: linear-gradient(135deg, var(--bg-card), #c0f0c0);
    border: 2px solid var(--accent);
    border-radius: 12px; padding: 20px;
    width: 100%; margin-top: 20px;
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
}

.todo-card h3, .char-counter-card h3, #todo-container-8 h3,
#calculator-container h3, #todo-container h3, #grade-calculator-container h3 {
    margin-bottom: 15px; color: var(--accent); font-size: 1.1rem;
}

.grade-label {
    display: block; color: var(--text-muted);
    font-size: 0.85rem; margin: 10px 0 4px;
}

.grade-input {
    width: 100%; padding: 10px; border-radius: 6px;
    border: 1px solid var(--border);
    background-color: white; color: var(--text-main); font-size: 0.95rem;
}

.grade-input:focus {
    outline: none; border-color: var(--accent);
    box-shadow: 0 0 10px rgba(40, 167, 69, 0.3);
}

.grade-result-box {
    margin-top: 15px; padding: 14px;
    background-color: #e0f5e0; border-radius: 8px;
    border-left: 4px solid var(--accent);
}

.grade-result-box p {
    font-weight: 700; font-size: 1.1rem;
    color: var(--text-main); margin-bottom: 6px; font-family: monospace;
}

.todo-input-group { display: flex; gap: 10px; }

.todo-input-group input, #charInput, #todo-container-8 input,
#calculator-container input, #todo-container input {
    flex: 1; padding: 10px; border-radius: 6px;
    border: 1px solid var(--border);
    background-color: white; color: var(--text-main);
}

.todo-input-group input:focus, #charInput:focus,
#todo-container-8 input:focus, #calculator-container input:focus, #todo-container input:focus {
    outline: none; border-color: var(--accent);
    box-shadow: 0 0 10px rgba(40, 167, 69, 0.3);
}

.todo-input-group button, #todo-container-8 button,
#calculator-container button, #todo-container button {
    padding: 10px 14px;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    border: none; border-radius: 6px; cursor: pointer;
    font-weight: 600; color: white; transition: all 0.3s ease;
}

.todo-input-group button:hover, #todo-container-8 button:hover,
#calculator-container button:hover, #todo-container button:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.5);
}

#todo-list, #todo-container-8 ul, #todo-container ul { list-style: none; margin-top: 15px; }

#todo-list li, #todo-container-8 li, #todo-container li {
    background-color: #c0f0c0; padding: 10px; border-radius: 6px;
    margin-bottom: 8px; border-left: 4px solid var(--accent);
    font-size: 0.9rem; transition: all 0.3s ease; cursor: pointer;
}

#todo-list li:hover, #todo-container-8 li:hover, #todo-container li:hover {
    background-color: #b3e6b3; transform: translateX(4px);
}

#charCount { font-size: 0.9rem; color: var(--text-muted); }

#calculator-container input { width: 100%; margin-bottom: 10px; }
#calculator-container button { width: 100%; padding: 8px 14px; margin-bottom: 10px; }

#calc-result {
    padding: 8px; background-color: #c0f0c0;
    border-radius: 6px; font-size: 0.95rem;
    color: var(--text-main); border-left: 4px solid var(--accent);
}

@media (max-width: 768px) {
    .layout { flex-direction: column; }
    .sidebar-menu { width: 100%; border-right: none; border-bottom: 1px solid var(--border); }
    .js-activities button { text-align: center; }
    .content-grid { grid-template-columns: 1fr; }
    .output-card { grid-column: 1 / 2; grid-row: auto; }
}