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

:root {
    --primary: #6366f1;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --dark: #1f2937;
    --light: #f3f4f6;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary);
}

.badge {
    background: var(--primary);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 10px;
    font-size: 0.7rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary);
}

.hero {
    text-align: center;
    color: white;
    padding: 3rem 0;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.detection-layers {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
}

.layer {
    background: rgba(255, 255, 255, 0.2);
    padding: 1.5rem;
    border-radius: 15px;
    text-align: center;
    min-width: 150px;
}

.layer-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.layer-name {
    font-weight: 700;
    font-size: 1.1rem;
}

.layer-desc {
    font-size: 0.9rem;
    opacity: 0.9;
}

.arrow {
    font-size: 2rem;
    font-weight: bold;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.upload-section, .results-section, .stats-section, .all-resumes-section {
    background: white;
    border-radius: 20px;
    margin: 2rem auto;
    padding: 2rem;
    max-width: 1200px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--dark);
}

.tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tab-btn {
    padding: 0.8rem 1.5rem;
    border: none;
    background: var(--light);
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

.tab-btn.active {
    background: var(--primary);
    color: white;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.upload-box {
    border: 3px dashed var(--primary);
    border-radius: 15px;
    padding: 3rem;
    text-align: center;
    background: linear-gradient(135deg, #f8f9ff 0%, #f0f2ff 100%);
    margin-bottom: 1.5rem;
    transition: all 0.3s;
}

.upload-box:hover {
    transform: scale(1.02);
}

.upload-icon {
    font-size: 4rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.file-name {
    margin-top: 1rem;
    font-weight: 600;
    color: var(--success);
}

.file-list {
    margin-top: 1rem;
    text-align: left;
}

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-block;
    margin: 0.5rem;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-outline {
    background: white;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    color: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
}

.stat-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

.loading-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    z-index: 9999;
    backdrop-filter: blur(5px);
}

.loading-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 5px solid rgba(255,255,255,0.3);
    border-top: 5px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

.result-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    border-left: 5px solid var(--primary);
}

.risk-CRITICAL {
    border-left-color: #dc2626;
    background: #fee2e2;
}

.risk-HIGH {
    border-left-color: #ea580c;
    background: #ffedd5;
}

.risk-MEDIUM {
    border-left-color: #f59e0b;
    background: #fef3c7;
}

.risk-LOW {
    border-left-color: #84cc16;
    background: #ecfccb;
}

.risk-NONE {
    border-left-color: #10b981;
    background: #d1fae5;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e5e7eb;
}

th {
    background: var(--primary);
    color: white;
    font-weight: 600;
}

tr:hover {
    background: #f9fafb;
}

#toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
}

.toast {
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    margin-bottom: 0.5rem;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--danger);
}

@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .detection-layers { flex-direction: column; }
    .arrow { transform: rotate(90deg); }
    .stats-grid { grid-template-columns: 1fr; }
}