{% extends 'school/base_school.html' %}
{% block title %}Subjects | STD Lab{% endblock %}
{% block page_title %}Academic Subjects{% endblock %}

{% block content %}
<style>
    .card { border-radius: 0; border: 1px solid #e2e8f0; box-shadow: none; margin-bottom: 20px; background: #fff; }
    .btn { border-radius: 0; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; padding: 10px 20px; text-decoration: none; display: inline-block; cursor: pointer; border: none; }
    .btn-dark { background: #0f172a; color: #fff; }
    .btn-light { background: #f1f5f9; color: #64748b; }
    
    .filter-btn { padding: 6px 12px; font-size: 0.7rem; font-weight: 800; border: 1px solid #e2e8f0; color: #64748b; background: #fff; text-decoration: none; text-transform: uppercase; }
    .filter-btn.active { background: #0f172a; color: #fff; border-color: #0f172a; }
</style>

<div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px;">
    <div style="display: flex; gap: 8px; flex-wrap: wrap;">
        <a href="?" class="filter-btn {% if not selected_group %}active{% endif %}">Show All</a>
        {% for g in groups %}
        <a href="?group_id={{ g.id }}" class="filter-btn {% if selected_group == g.id|stringformat:"s" %}active{% endif %}">{{ g.name }}</a>
        {% endfor %}
    </div>
    <div style="display: flex; gap: 10px;">
        <a href="{% url 'subject_group_add' %}" class="btn btn-light"><i class="fas fa-layer-group"></i> NEW GROUP</a>
        <a href="{% url 'subject_add' %}" class="btn btn-dark"><i class="fas fa-book"></i> NEW SUBJECT</a>
    </div>
</div>

<div class="card">
    <table style="width: 100%; border-collapse: collapse;">
        <thead>
            <tr style="background: #f8fafc; text-align: left; border-bottom: 1px solid #e2e8f0;">
                <th style="padding: 15px; font-size: 0.75rem; color: #94a3b8; text-transform: uppercase;">Subject Name</th>
                <th style="padding: 15px; font-size: 0.75rem; color: #94a3b8; text-transform: uppercase;">Classes Assigned</th>
                <th style="padding: 15px; font-size: 0.75rem; color: #94a3b8; text-transform: uppercase;">Total Students</th>
                <th style="padding: 15px; font-size: 0.75rem; color: #94a3b8; text-transform: uppercase;">Action</th>
            </tr>
        </thead>
        <tbody>
            {% for sub in subjects %}
            <tr style="border-bottom: 1px solid #f1f5f9;">
                <td style="padding: 15px;">
                    <div style="font-weight: 800; color: #0f172a;">{{ sub.name }}</div>
                    <div style="font-size: 0.65rem; color: #94a3b8; margin-top: 2px;">CODE: {{ sub.code|default:"N/A"|upper }} | GROUP: {{ sub.group.name|default:"REGULAR"|upper }}</div>
                </td>
                <td style="padding: 15px;">
                    <div style="display: flex; flex-wrap: wrap; gap: 5px;">
                        {% for cls in sub.classes.all %}
                        <span style="font-size: 0.65rem; font-weight: 900; background: #f8fafc; border: 1px solid #e2e8f0; padding: 2px 6px; color: #0f172a; cursor: help;" title="{{ cls.students.count }} Students">{{ cls.name }}</span>
                        {% empty %}
                        <span style="color: #cbd5e1; font-size: 0.7rem;">Not assigned to any class</span>
                        {% endfor %}
                    </div>
                </td>
                <td style="padding: 15px;">
                    <span style="font-weight: 900; color: #10b981; background: rgba(16, 185, 129, 0.05); padding: 5px 12px; border: 1px solid rgba(16, 185, 129, 0.1);">{{ sub.student_count }}</span>
                </td>
                <td style="padding: 15px;">
                    <div style="display: flex; gap: 15px;">
                        <a href="{% url 'subject_edit' sub.id %}" style="color: #64748b;"><i class="fas fa-edit"></i></a>
                        <a href="{% url 'subject_delete' sub.id %}" onclick="return confirm('Delete this subject?')" style="color: #ef4444;"><i class="fas fa-trash"></i></a>
                    </div>
                </td>
            </tr>
            {% empty %}
            <tr><td colspan="4" style="padding: 40px; text-align: center; color: #cbd5e1; font-weight: 800;">NO SUBJECTS FOUND</td></tr>
            {% endfor %}
        </tbody>
    </table>
</div>

{% endblock %}