:root {
    --bg-dark: #121212;
    --card-dark: #1E1E1E;
    --accent: #3498db;
    --text-light: #f0f0f0;
    --muted: #aaaaaa;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-radial-gradient(circle at 20% 20%, rgba(52,152,219,0.04), transparent 50px);
    animation: moveBg 60s linear infinite;
    z-index: 0;
    pointer-events: none;
}

@keyframes moveBg {
    from { background-position: 0 0; }
    to { background-position: 1000px 1000px; }
}

.navbar {
    background-color: var(--card-dark) !important;
    box-shadow: 0 2px 8px rgba(0,0,0,.3);
    position: relative;
    z-index: 100;
}

.modal {
    z-index: 2000;
}

.modal-backdrop {
    z-index: 1990;
}

.navbar-brand, .navbar-text {
    color: var(--text-light) !important;
}

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

.btn-primary:hover {
    background-color: #2980b9;
    border-color: #2980b9;
}

.btn-light {
    background-color: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.2);
    color: var(--text-light);
}

.btn-light:hover {
    background-color: rgba(255,255,255,0.2);
    color: white;
}

.btn-outline-light {
    border-color: rgba(255,255,255,0.3);
    color: var(--text-light);
}

.btn-outline-light:hover {
    background-color: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.5);
    color: white;
}

.hero-section {
    position: relative;
    z-index: 1;
    padding: 100px 0;
    text-align: center;
}

.hero-section h1 {
    font-size: 3rem;
    font-weight: bold;
    color: var(--accent);
    text-shadow: 0 0 10px rgba(52,152,219,0.3);
    margin-bottom: 1.5rem;
}

.hero-section .lead {
    color: var(--muted);
    font-size: 1.2rem;
}

.card {
    background-color: var(--card-dark);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    z-index: 1;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(52,152,219,0.2);
}

.card-body {
    color: var(--text-light);
}

.card-title {
    color: var(--accent);
}

.text-muted {
    color: #d0d0d0 !important;
}

/* Table dark improvements */
.table-dark {
    color: #f0f0f0 !important;
}

.table-dark th {
    color: #ffffff !important;
    border-color: rgba(255,255,255,0.2) !important;
}

.table-dark td {
    color: #e0e0e0 !important;
    border-color: rgba(255,255,255,0.1) !important;
}

.table-dark .text-muted {
    color: #b0b0b0 !important;
}

/* Card headers */
.card-header {
    color: #f0f0f0 !important;
}

.card-header h5,
.card-header h6 {
    color: #f0f0f0 !important;
}

.app-card {
    cursor: pointer;
    transition: all 0.3s ease;
}

.app-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(52,152,219,0.3) !important;
}

.app-card.opacity-50 {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-control {
    background-color: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--text-light);
}

.form-control:focus {
    background-color: rgba(255,255,255,0.08);
    border-color: var(--accent);
    box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
    color: var(--text-light);
}

.form-control::placeholder {
    color: var(--muted);
}

.form-label {
    color: var(--text-light);
    font-weight: 500;
}

.input-group-text {
    background-color: rgba(255,255,255,0.05);
    border-color: rgba(255,255,255,0.2);
    color: var(--text-light);
}

.alert {
    border-radius: 10px;
    border: none;
    position: relative;
    z-index: 1;
}

.alert-info {
    background-color: rgba(52,152,219,0.15);
    color: #66d9ef;
    border-left: 4px solid var(--accent);
}

.alert-success {
    background-color: rgba(46,204,113,0.15);
    color: #2ecc71;
    border-left: 4px solid #2ecc71;
}

.alert-danger {
    background-color: rgba(231,76,60,0.15);
    color: #e74c3c;
    border-left: 4px solid #e74c3c;
}

.alert-warning {
    background-color: rgba(241,196,15,0.15);
    color: #f1c40f;
    border-left: 4px solid #f1c40f;
}

.badge {
    padding: 8px 15px;
    font-size: 0.9rem;
    font-weight: 500;
}

.badge.bg-success {
    background-color: #2ecc71 !important;
}

.badge.bg-warning {
    background-color: #f1c40f !important;
    color: #121212 !important;
}

.badge.bg-secondary {
    background-color: #7f8c8d !important;
}

.badge.bg-primary {
    background-color: var(--accent) !important;
}

.container {
    position: relative;
    z-index: 1;
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    color: #2980b9;
    text-decoration: underline;
}

.border-warning {
    border-color: #f1c40f !important;
}

hr {
    border-color: rgba(255,255,255,0.1);
}

#togglePassword {
    cursor: pointer;
}

/* Captcha Styles */
.captcha-container {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
}

.captcha-prompt {
    font-size: 1.1rem;
    color: var(--accent, #3498db);
}

.captcha-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
    margin: 0;
}

.captcha-image-wrapper {
    position: relative;
    aspect-ratio: 1;
    cursor: pointer;
    border: 2px solid transparent;
    border-radius: 6px;
    overflow: hidden;
    transition: all 0.2s ease;
    background: rgba(255, 255, 255, 0.03);
}

.captcha-image-wrapper:hover {
    border-color: rgba(52, 152, 219, 0.5);
    transform: scale(1.02);
}

.captcha-image-wrapper.selected {
    border-color: #3498db;
    box-shadow: 0 0 10px rgba(52, 152, 219, 0.5);
}

.captcha-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.captcha-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(52, 152, 219, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s ease;
    pointer-events: none;
}

.captcha-image-wrapper.selected .captcha-image-overlay {
    opacity: 1;
}

.captcha-image-overlay i {
    font-size: 2rem;
    color: white;
}

.captcha-refresh {
    transition: transform 0.3s ease;
}

.captcha-refresh:hover {
    transform: rotate(180deg);
}

.captcha-info {
    text-align: center;
}

@media (max-width: 768px) {
    .hero-section {
        padding: 50px 0;
    }

    .hero-section h1 {
        font-size: 2rem;
    }

    .hero-section .lead {
        font-size: 1rem;
    }

    .captcha-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.4rem;
    }

    .captcha-prompt {
        font-size: 0.95rem;
    }
}