/* Stock Levels Stylesheet */

/* Root Variables */
:root {
    --primary-bg: rgb(31, 224, 199);
    --border-color: rgb(208, 31, 224);
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --dark-gray: #333333;
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
    --info: #17a2b8;
    --shadow: rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--primary-bg) 0%, #00d4aa 100%);
    color: var(--dark-gray);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--white);
    border: 5px solid var(--border-color);
    border-radius: 15px;
    box-shadow: 0 10px 30px var(--shadow);
    overflow: hidden;
}

/* Header Styles */
header {
    background: linear-gradient(135deg, var(--border-color), #c020d0);
    color: var(--white);
    padding: 30px;
    text-align: center;
    position: relative;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-size: 1.2em;
    font-weight: 300;
    opacity: 0.95;
}

.print-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--white);
    color: var(--border-color);
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1em;
    font-weight: bold;
    transition: all 0.3s ease;
}

.print-btn:hover {
    background: var(--primary-bg);
    transform: scale(1.05);
}

/* Section Styles */
.content-section {
    padding: 30px;
    border-bottom: 2px solid var(--primary-bg);
}

.content-section:last-of-type {
    border-bottom: none;
}

.content-section h2 {
    color: var(--border-color);
    font-size: 2em;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 3px solid var(--primary-bg);
}

.content-section ul {
    margin-left: 25px;
    margin-top: 10px;
}

.content-section li {
    margin-bottom: 8px;
}

/* Stock Level Cards */
.stock-level-card {
    background: var(--light-gray);
    border-left: 5px solid var(--primary-bg);
    padding: 20px;
    margin-bottom: 25px;
    border-radius: 8px;
    transition: transform 0.3s ease;
}

.stock-level-card:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 15px var(--shadow);
}

.stock-level-card h3 {
    color: var(--border-color);
    font-size: 1.5em;
    margin-bottom: 15px;
}

.definition {
    background: var(--white);
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 15px;
    border-left: 3px solid var(--info);
}

/* Formula Box */
.formula-box {
    background: linear-gradient(135deg, #fff3cd, #ffeaa7);
    border: 2px dashed var(--warning);
    padding: 20px;
    border-radius: 8px;
    margin: 15px 0;
}

.formula-box h4 {
    color: #856404;
    margin-bottom: 10px;
}

.formula {
    font-size: 1.1em;
    font-weight: bold;
    color: #333;
    background: var(--white);
    padding: 10px;
    border-radius: 5px;
    margin: 10px 0;
    text-align: center;
}

.or {
    text-align: center;
    font-weight: bold;
    color: var(--warning);
    margin: 10px 0;
}

.note-small {
    font-size: 0.9em;
    font-style: italic;
    color: #666;
    margin-top: 10px;
}

/* Example Box */
.example-box {
    background: linear-gradient(135deg, #e7f5ff, #d0ebff);
    border: 2px solid var(--info);
    padding: 20px;
    border-radius: 8px;
    margin-top: 15px;
}

.example-box h4 {
    color: var(--info);
    margin-bottom: 10px;
}

.example-box ul {
    margin: 10px 0 10px 20px;
}

.note {
    background: var(--success);
    color: var(--white);
    padding: 10px;
    border-radius: 5px;
    margin-top: 15px;
    font-weight: bold;
}

.note.warning {
    background: var(--danger);
}

/* Tables */
.table-container {
    overflow-x: auto;
    margin: 20px 0;
}

.reference-table,
.calculation-table table,
.solution-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    box-shadow: 0 2px 10px var(--shadow);
    border-radius: 8px;
    overflow: hidden;
}

.reference-table th,
.calculation-table th,
.solution-table th {
    background: var(--border-color);
    color: var(--white);
    padding: 15px;
    text-align: left;
    font-weight: bold;
}

.reference-table td,
.calculation-table td,
.solution-table td {
    padding: 12px 15px;
    border-bottom: 1px solid #ddd;
}

.reference-table tr:hover,
.calculation-table tr:hover,
.solution-table tr:hover {
    background: var(--light-gray);
}

.reference-table tr:last-child td,
.calculation-table tr:last-child td,
.solution-table tr:last-child td {
    border-bottom: none;
}

/* Flowchart Styles */
.flowchart-container {
    background: var(--light-gray);
    padding: 30px;
    border-radius: 10px;
    margin: 20px 0;
}

.flowchart {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.flow-box {
    padding: 15px 25px;
    border-radius: 8px;
    font-weight: bold;
    text-align: center;
    min-width: 300px;
    box-shadow: 0 2px 5px var(--shadow);
    position: relative;
}

.flow-box.start {
    background: var(--primary-bg);
    color: var(--white);
    border: 3px solid var(--border-color);
}

.flow-box.end {
    background: var(--success);
    color: var(--white);
}

.flow-box.decision {
    background: #fff3cd;
    border: 2px solid var(--warning);
    clip-path: polygon(10% 0%, 90% 0%, 100% 50%, 90% 100%, 10% 100%, 0% 50%);
    padding: 20px 40px;
}

.flow-box.action {
    background: #cfe2ff;
    border: 2px solid var(--info);
}

.flow-box.action.alert {
    background: #f8d7da;
    border: 2px solid var(--danger);
    color: var(--danger);
}

.flow-box.action.warning {
    background: #fff3cd;
    border: 2px solid var(--warning);
}

.flow-box.success {
    background: #d1e7dd;
    border: 2px solid var(--success);
    color: var(--success);
}

.arrow {
    font-size: 2em;
    color: var(--border-color);
    font-weight: bold;
}

.flow-side-arrow {
    align-self: flex-end;
    margin-right: 50px;
    color: var(--border-color);
    font-weight: bold;
}

/* Comprehensive Example */
.comprehensive-example {
    background: var(--light-gray);
    padding: 25px;
    border-radius: 10px;
    border: 3px solid var(--primary-bg);
}

.comprehensive-example h3 {
    color: var(--border-color);
    margin: 20px 0 10px 0;
}

.comprehensive-example ul {
    margin: 15px 0 15px 25px;
}

.calculation-table {
    margin-top: 20px;
}

/* Question Cards */
.question-card {
    background: var(--white);
    border: 3px solid var(--primary-bg);
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 4px 10px var(--shadow);
}

.question-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.marks-badge {
    background: var(--border-color);
    color: var(--white);
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: bold;
    font-size: 0.9em;
}

.marks-2 .marks-badge {
    background: var(--info);
}

.marks-3 .marks-badge {
    background: var(--warning);
    color: var(--dark-gray);
}

.marks-5 .marks-badge {
    background: var(--danger);
}

.question-header h3 {
    color: var(--border-color);
    margin: 0;
}

.question-text {
    background: var(--light-gray);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 15px;
}

.question-text ul {
    margin: 10px 0 10px 25px;
}

.solution-btn {
    background: var(--primary-bg);
    color: var(--white);
    border: 2px solid var(--border-color);
    padding: 12px 30px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1em;
    font-weight: bold;
    transition: all 0.3s ease;
}

.solution-btn:hover {
    background: var(--border-color);
    transform: scale(1.05);
}

.solution {
    background: linear-gradient(135deg, #e7f5ff, #cfe2ff);
    border: 2px solid var(--info);
    padding: 20px;
    border-radius: 8px;
    margin-top: 15px;
    animation: slideDown 0.5s ease;
}

.solution.hidden {
    display: none;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.solution h4 {
    color: var(--info);
    margin-bottom: 15px;
}

.solution p {
    margin-bottom: 10px;
}

.answer-box {
    background: var(--success);
    color: var(--white);
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
    font-size: 1.1em;
}

.instruction {
    background: #fff3cd;
    padding: 15px;
    border-radius: 8px;
    border-left: 4px solid var(--warning);
    margin-bottom: 20px;
    font-style: italic;
}

/* Key Points */
.key-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.point-card {
    background: linear-gradient(135deg, var(--primary-bg), #00d4aa);
    color: var(--white);
    padding: 20px;
    border-radius: 10px;
    border: 2px solid var(--border-color);
    transition: transform 0.3s ease;
}

.point-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px var(--shadow);
}

.point-card h4 {
    margin-bottom: 10px;
    font-size: 1.2em;
}

/* Footer */
footer {
    background: linear-gradient(135deg, var(--dark-gray), #555);
    color: var(--white);
    text-align: center;
    padding: 20px;
}

footer p {
    margin: 5px 0;
}

/* Print Styles */
@media print {
    body {
        background: white;
        padding: 0;
    }

    .container {
        border: none;
        box-shadow: none;
    }

    .print-btn {
        display: none;
    }

    .solution-btn {
        display: none;
    }

    .solution {
        display: block !important;
        page-break-inside: avoid;
    }

    .question-card,
    .stock-level-card {
        page-break-inside: avoid;
    }

    .flow-box.decision {
        clip-path: none;
        border: 2px solid var(--warning);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.8em;
    }

    .subtitle {
        font-size: 1em;
    }

    .print-btn {
        position: static;
        margin-top: 15px;
        display: block;
        width: 100%;
    }

    .content-section {
        padding: 20px;
    }

    .content-section h2 {
        font-size: 1.5em;
    }

    .flow-box {
        min-width: 200px;
        font-size: 0.9em;
    }

    .key-points {
        grid-template-columns: 1fr;
    }

    .reference-table,
    .calculation-table table,
    .solution-table {
        font-size: 0.9em;
    }

    .reference-table th,
    .reference-table td,
    .calculation-table th,
    .calculation-table td,
    .solution-table th,
    .solution-table td {
        padding: 8px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    .container {
        border-width: 3px;
    }

    header {
        padding: 20px;
    }

    header h1 {
        font-size: 1.5em;
    }

    .flow-box {
        min-width: 150px;
        padding: 10px 15px;
        font-size: 0.85em;
    }
}