{% extends 'base.html' %}
{% load static i18n %}

{% block title %}Candidate Management - {{ job.title }} - University ATS{% endblock %}

{% block customCSS %}
<style>
    /* KAAT-S UI Variables */
    :root {
        --kaauh-teal: #00636e;
        --kaauh-teal-dark: #004a53;
        --kaauh-border: #eaeff3;
        --kaauh-primary-text: #343a40;
        --kaauh-success: #28a745; /* Standard success for positive actions */
        --kaauh-info: #17a2b8; /* Standard info/exam badge */
    }

    /* 1. Main Container & Card Styling */
    .kaauh-card {
        border: 1px solid var(--kaauh-border);
        border-radius: 0.75rem;
        box-shadow: 0 4px 12px rgba(0,0,0,0.06);
        background-color: white;
    }
    .tier-controls {
        background-color: var(--kaauh-border); /* Light background for control sections */
        border-radius: 0.5rem;
        padding: 1.25rem;
        margin-bottom: 1.5rem;
    }

    /* 2. Button Styling (from reference) */
    .btn-main-action {
        background-color: var(--kaauh-teal);
        border-color: var(--kaauh-teal);
        color: white;
        font-weight: 600;
        transition: all 0.2s ease;
    }
    .btn-main-action:hover {
        background-color: var(--kaauh-teal-dark);
        border-color: var(--kaauh-teal-dark);
        box-shadow: 0 4px 8px rgba(0,0,0,0.15);
    }
    .btn-outline-secondary {
        color: var(--kaauh-teal-dark);
        border-color: var(--kaauh-teal);
    }
    .btn-outline-secondary:hover {
        background-color: var(--kaauh-teal-dark);
        color: white;
        border-color: var(--kaauh-teal-dark);
    }

    /* 3. Tab Styles (View Switcher) */
    .nav-pills .nav-link {
        color: var(--kaauh-teal-dark);
        font-weight: 500;
        border-radius: 0.5rem;
        transition: background-color 0.2s;
    }
    .nav-pills .nav-link.active {
        background-color: var(--kaauh-teal);
        color: white;
        font-weight: 600;
    }

    /* 4. Candidate Table Styling (Aligned with KAAT-S) */
    .candidate-table {
        border-collapse: separate;
        border-spacing: 0;
        background-color: white;
        border-radius: 0.5rem;
        overflow: hidden;
    }
    .candidate-table thead {
        background-color: var(--kaauh-border);
    }
    .candidate-table th {
        padding: 0.75rem;
        font-weight: 600;
        color: var(--kaauh-teal-dark);
        border-bottom: 2px solid var(--kaauh-teal);
    }
    .candidate-table td {
        padding: 0.75rem;
        border-bottom: 1px solid var(--kaauh-border);
        vertical-align: middle;
    }
    .candidate-table tbody tr:hover {
        background-color: #f1f3f4;
    }
    .candidate-name {
        font-weight: 600;
        color: var(--kaauh-primary-text);
    }
    .candidate-details {
        font-size: 0.8rem;
        color: #6c757d;
    }

    /* 5. Badges (Status/Score) */
    .status-badge {
        font-size: 0.8rem;
        padding: 0.3em 0.7em;
        border-radius: 0.35rem;
        font-weight: 700;
        text-transform: uppercase;
    }
    .bg-applicant { background-color: #6c757d; color: white; } /* Secondary */
    .bg-candidate { background-color: var(--kaauh-success); color: white; } /* Success */
    .bg-score { background-color: var(--kaauh-teal-dark); color: white; }
    .bg-exam-status { background-color: var(--kaauh-info); color: white; }

    /* 6. Stage Badges (More distinct from KAAT-S reference) */
    .stage-badge {
        font-size: 0.75rem;
        padding: 0.25rem 0.6rem;
        border-radius: 0.3rem;
        font-weight: 600;
    }
    .stage-Applied { background-color: #e9ecef; color: #495057; }
    .stage-Exam { background-color: #d1ecf1; color: #0c5460; } /* Light cyan/info */
    .stage-Interview { background-color: #ffc107; color: #856404; } /* Yellow/warning */
    .stage-Offer { background-color: #d4edda; color: #155724; } /* Light green/success */

    /* Candidate Indicator (used for the single Potential Candidates list) */
    .candidate-indicator-badge {
        font-size: 0.7rem;
        padding: 0.15rem 0.4rem;
        border-radius: 0.25rem;
        font-weight: 700;
        margin-left: 0.5rem;
        background-color: var(--kaauh-teal);
        color: white;
    }
</style>
{% endblock %}

{% block content %}
<div class="container py-4">
    <div class="d-flex justify-content-between align-items-center mb-4">
        <div>
            <h1 class="h3 mb-1" style="color: var(--kaauh-teal-dark); font-weight: 700;">
                <i class="fas fa-layer-group me-2"></i>
                {% trans "Applicant Screening for Job:" %} - {{ job.title }}&nbsp;&nbsp;<small class="text-muted fs-6">{{job.internal_job_id}}<small>
            </h1>
            <p class="text-muted mb-0">
                Total Applicants: <span class="fw-bold">{{ total_candidates }}</span>
            </p>
        </div>
        <a href="{% url 'job_detail' job.slug %}" class="btn btn-outline-secondary">
            <i class="fas fa-arrow-left me-1"></i> {% trans "Back to Job" %}
        </a>
    </div>

    <div class="tier-controls kaauh-card shadow-sm">
        <h4 class="h5 mb-3" style="color: var(--kaauh-teal-dark);">{% trans "Filter Potential Candidates" %}</h4>
        <form method="post" class="mb-0">
            {% csrf_token %}
            <div class="row g-3 align-items-end">
                
                <div class="col-md-3 col-sm-6">
                    <label for="min_ai_score" class="form-label small text-muted">
                        {% trans "Minimum AI Score" %}
                    </label>
                    <input type="number" name="min_ai_score" id="min_ai_score" class="form-control"
                           value="{{ min_ai_score|default:'0' }}" min="0" max="100" step="1"
                           placeholder="e.g., 75">
                </div>

                <div class="col-md-3 col-sm-6">
                    <label for="tier1_count" class="form-label small text-muted">
                        {% trans "Number of Potential Candidates (Top N)" %}
                    </label>
                    <input type="number" name="tier1_count" id="tier1_count" class="form-control"
                           value="{{ tier1_count }}" min="1" max="{{ total_candidates }}"
                           placeholder="Enter N for top candidates">
                </div>
                
                <div class="col-md-auto">
                    <button type="submit" name="update_tiers" class="btn btn-main-action">
                        <i class="fas fa-filter me-1"></i> {% trans "Apply Filter" %}
                    </button>
                </div>
            </div>
            <p class="small text-muted mt-2 mb-0">
                {% trans "The candidates list is filtered by either the minimum AI Score OR the Top N candidates, whichever criteria results in a smaller set." %}
            </p>
        </form>
    </div>

    <hr class="my-4">

    <ul class="nav nav-pills mb-3 justify-content-center" id="candidateViewTabs" role="tablist">
        <li class="nav-item" role="presentation">
            <button class="nav-link active" id="all-applicants-tab" data-bs-toggle="tab" data-bs-target="#all-applicants" type="button"
                    role="tab" aria-controls="all-applicants" aria-selected="true">
                <i class="fas fa-users me-1"></i> {% trans "All Applicants" %}
            </button>
        </li>
        <li class="nav-item" role="presentation">
            <button class="nav-link" id="potential-candidates-tab" data-bs-toggle="tab" data-bs-target="#potential-candidates" type="button"
                    role="tab" aria-controls="potential-candidates" aria-selected="false">
                <i class="fas fa-trophy me-1"></i> {% trans "Potential Candidates" %}
                <span class="candidate-indicator-badge">{{ tier1_candidates|length }}</span>
            </button>
        </li>
    </ul>

    <div class="tab-content kaauh-card p-3 shadow-sm" id="candidateViewTabContent">

        <div class="tab-pane fade show active" id="all-applicants" role="tabpanel" aria-labelledby="all-applicants-tab">
            <h2 class="h5 mb-3" style="color: var(--kaauh-teal-dark);">{% trans "Complete List of All Submissions" %}</h2>
            {% include "recruitment/partials/_candidate_table.html" with candidates=all_applicants_list is_potential_view=False only %}
        </div>

        <div class="tab-pane fade" id="potential-candidates" role="tabpanel" aria-labelledby="potential-candidates-tab">
            <h2 class="h5 mb-3" style="color: var(--kaauh-teal-dark);">
                {% trans "Top" %} {{ tier1_candidates|length }} {% trans "Candidates by AI Score" %}
            </h2>
            {% include "recruitment/partials/_candidate_table.html" with candidates=tier1_candidates is_potential_view=True only %}
        </div>
    </div>
</div>

{% comment %}
    Modals for candidate view and exam status update should be included here,
    e.g., {% include "includes/_modals_for_candidate_management.html" %}
{% endcomment %}

{% endblock %}