/* Design Tokens & Theme Variables */
:root {
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --bg-sidebar: #090d16;
    --border-color: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-color: #6366f1;
    --accent-hover: #4f46e5;
    --accent-light: rgba(99, 102, 241, 0.15);
    --green: #10b981;
    --green-bg: rgba(16, 185, 129, 0.15);
    --red: #ef4444;
    --red-bg: rgba(239, 68, 68, 0.15);
    --amber: #f59e0b;
    --amber-bg: rgba(245, 158, 11, 0.15);
    --blue: #3b82f6;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
    font-family: var(--font);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.5;
    height: 100vh;
    max-height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background-color: var(--bg-sidebar);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    z-index: 100;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.brand-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #6366f1, #a855f7);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: #fff;
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.4);
}

.brand-text h2 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.brand-text .sub-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.engine-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.9rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot.green {
    background-color: var(--green);
    box-shadow: 0 0 8px var(--green);
}

.status-dot.orange {
    background-color: var(--amber);
    box-shadow: 0 0 8px var(--amber);
}

.status-dot.red {
    background-color: var(--red);
    box-shadow: 0 0 8px var(--red);
}

.text-amber { color: var(--amber); }
.text-blue { color: var(--blue); }
.text-green { color: var(--green); }
.text-red { color: var(--red); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background-color: var(--bg-card-hover);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--border-color);
}

.btn-danger {
    background-color: var(--red);
    color: #fff;
}

.btn-danger:hover {
    background-color: #dc2626;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

.btn-danger-outline {
    background: transparent;
    color: var(--red);
    border: 1px solid rgba(239, 68, 68, 0.4);
}

.btn-danger-outline:hover {
    background: var(--red-bg);
    border-color: var(--red);
}

.demo-btn {
    background: linear-gradient(135deg, #10b981, #059669);
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.3);
}

.demo-btn:hover {
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.5);
}

/* Layout */
.app-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
    height: calc(100vh - 73px);
}

.sidebar {
    width: 260px;
    flex-shrink: 0;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1.5rem 1rem;
    overflow-y: auto;
    height: 100%;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem 1rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    text-align: left;
    transition: all 0.2s ease;
}

.nav-item:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.nav-item.active {
    background-color: var(--accent-light);
    color: var(--accent-color);
    font-weight: 600;
    border-left: 3px solid var(--accent-color);
}

/* Content Area */
.content-area {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
    height: 100%;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.panel-header {
    margin-bottom: 2rem;
}

.panel-header h2 {
    font-size: 1.6rem;
    font-weight: 700;
}

.panel-header p {
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Hero Banner */
.hero-banner {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(168, 85, 247, 0.15)), var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem 2.5rem;
    margin-bottom: 2.5rem;
}

.hero-content h1 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin-bottom: 1.8rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

/* Workflow Grid */
.workflow-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
    margin-top: 1.25rem;
}

.workflow-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    position: relative;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.workflow-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-color);
}

.wf-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--text-muted);
}

.workflow-card .icon {
    font-size: 1.8rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.workflow-card h4 {
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
}

.workflow-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Cards & Grid Layouts */
.grid-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
}

.card h3 {
    font-size: 1.15rem;
    margin-bottom: 1.2rem;
}

/* Form Controls */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
}

/* Radio Mode Group */
.mode-toggle-group {
    display: flex;
    gap: 1rem;
    margin-top: 0.4rem;
}

.mode-option {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.75rem 1rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.88rem;
    color: var(--text-secondary);
    transition: all 0.2s ease;
}

.mode-option:hover {
    border-color: var(--accent-color);
}

.mode-option input[type="radio"] {
    accent-color: var(--accent-color);
}

.mode-option.active {
    border-color: var(--accent-color);
    background: var(--accent-light);
    color: var(--text-primary);
}

/* Dropzone */
.dropzone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: 2.5rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.dropzone:hover {
    border-color: var(--accent-color);
    background: var(--accent-light);
}

.drop-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 0.8rem;
}

.file-list {
    margin-top: 1rem;
    max-height: 200px;
    overflow-y: auto;
}

.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.8rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    margin-bottom: 0.4rem;
    font-size: 0.85rem;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.file-size {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Recruiter Actions Bar */
.recruiter-actions-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem 1.5rem;
    margin-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.export-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.export-mode-selector {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 0.88rem;
}

/* Sample Buttons List */
.sample-jd-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.sample-jd-btn {
    padding: 0.9rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    text-align: left;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.2s ease;
}

.sample-jd-btn:hover {
    border-color: var(--accent-color);
    background: var(--accent-light);
}

/* Ranking Table */
.table-responsive {
    overflow-x: auto;
}

.ranking-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 0.5rem;
}

.ranking-table th, .ranking-table td {
    padding: 1rem 1.2rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.ranking-table th {
    background-color: var(--bg-sidebar);
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ranking-table tbody tr:hover {
    background-color: var(--bg-card-hover);
}

.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.9rem;
}

.rank-badge.top-1 { background: linear-gradient(135deg, #f59e0b, #d97706); color: #fff; }
.rank-badge.top-2 { background: linear-gradient(135deg, #94a3b8, #64748b); color: #fff; }
.rank-badge.top-3 { background: linear-gradient(135deg, #b45309, #78350f); color: #fff; }
.rank-badge.normal { background: var(--border-color); color: var(--text-secondary); }

/* Skill Pills */
.pills-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.pill {
    padding: 0.25rem 0.6rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.pill-green { background: var(--green-bg); color: var(--green); border: 1px solid rgba(16, 185, 129, 0.3); }
.pill-red { background: var(--red-bg); color: var(--red); border: 1px solid rgba(239, 68, 68, 0.3); }

/* Metrics */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    text-align: center;
}

.metric-card.highlight {
    border-color: var(--accent-color);
    background: var(--accent-light);
}

.metric-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--accent-color);
}

.metric-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Confusion Matrix */
.confusion-matrix {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.cm-box {
    padding: 1.25rem;
    border-radius: var(--radius-sm);
    text-align: center;
}

.cm-box.tp { background: var(--green-bg); border: 1px solid var(--green); }
.cm-box.fp { background: var(--amber-bg); border: 1px solid var(--amber); }
.cm-box.fn { background: var(--red-bg); border: 1px solid var(--red); }
.cm-box.tn { background: var(--bg-dark); border: 1px solid var(--border-color); }

.cm-val { font-size: 1.6rem; font-weight: 800; display: block; }
.cm-lbl { font-size: 0.75rem; color: var(--text-secondary); }

/* Modal */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 680px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 2rem;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.score-card-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1rem;
    background: var(--bg-dark);
    border-radius: var(--radius-md);
    margin-bottom: 1.25rem;
}

.large-score {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--green);
}

.score-overall-box {
    text-align: center;
    padding-right: 1.5rem;
    border-right: 1px solid var(--border-color);
}

.score-label-sub {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.score-breakdown-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.4rem 1.2rem;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.score-item strong {
    color: var(--text-primary);
}

.evaluation-note-badge {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(255,255,255,0.1);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loader-container {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

/* Utilities */
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 0.5rem; }
.text-center { text-align: center; }
.card-header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
}