:root {
    --primary-color: #F6821F;
    --primary-hover: #e57510;
    --secondary-color: #0051C3;
    --success-color: #2FA84F;
    --danger-color: #E53E3E;
    --dark-bg: #1a1a1a;
    --card-bg: #2d2d2d;
    --border-color: #404040;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 30px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo h1 {
    font-size: 24px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.settings-icon {
    cursor: pointer;
    padding: 10px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.settings-icon:hover {
    background: var(--card-bg);
    transform: rotate(90deg);
}

.settings-icon svg {
    color: var(--text-primary);
    stroke-width: 2;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    justify-content: center;
    align-items: center;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--card-bg);
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    box-shadow: var(--shadow-lg);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.close {
    font-size: 28px;
    font-weight: bold;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.3s ease;
}

.close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 20px;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 12px 24px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
    font-weight: 500;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

/* Cards */
.section {
    margin-bottom: 30px;
}

.section h2 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.card h3 {
    font-size: 20px;
    margin-bottom: 16px;
    color: var(--primary-color);
}

/* Form Elements */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 500;
}

.form-group small {
    display: block;
    margin-top: 4px;
    color: var(--text-secondary);
    font-size: 12px;
}

input[type="text"],
input[type="email"],
input[type="password"],
select {
    width: 100%;
    padding: 12px 16px;
    background: var(--dark-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.3s ease;
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(246, 130, 31, 0.1);
}

select {
    cursor: pointer;
}

/* File Upload */
.file-upload-wrapper {
    position: relative;
}

.file-input {
    display: none;
}

.file-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    background: var(--dark-bg);
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-label:hover {
    border-color: var(--primary-color);
    background: rgba(246, 130, 31, 0.05);
}

.file-label svg {
    margin-bottom: 10px;
    stroke-width: 2;
}

.file-label span {
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.btn-secondary:hover:not(:disabled) {
    background: #003d99;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.btn-success:hover:not(:disabled) {
    background: #268a3f;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--dark-bg);
    border-radius: 4px;
    overflow: hidden;
    margin: 20px 0;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--success-color));
    width: 0%;
    transition: width 0.3s ease;
    animation: progress 2s infinite;
}

@keyframes progress {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Result Boxes */
.result-box {
    margin-top: 20px;
    padding: 16px;
    border-radius: 8px;
    display: none;
    animation: slideDown 0.3s ease;
}

.result-box.show {
    display: block;
}

.result-box.success {
    background: rgba(47, 168, 79, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
}

.result-box.error {
    background: rgba(229, 62, 62, 0.1);
    border: 1px solid var(--danger-color);
    color: var(--danger-color);
}

.result-box.info {
    background: rgba(0, 81, 195, 0.1);
    border: 1px solid var(--secondary-color);
    color: var(--text-primary);
}

.result-box pre {
    margin-top: 10px;
    padding: 10px;
    background: var(--dark-bg);
    border-radius: 4px;
    overflow-x: auto;
    font-size: 12px;
}

/* Lists */
.list-container {
    margin-top: 20px;
}

.list-item {
    background: var(--dark-bg);
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 10px;
    border-left: 4px solid var(--primary-color);
}

.list-item h4 {
    margin-bottom: 8px;
    color: var(--text-primary);
}

.list-item p {
    color: var(--text-secondary);
    font-size: 14px;
    margin: 4px 0;
}

.list-item .badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    margin-right: 8px;
}

.badge.active {
    background: rgba(47, 168, 79, 0.2);
    color: var(--success-color);
}

.badge.pending {
    background: rgba(246, 130, 31, 0.2);
    color: var(--primary-color);
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 16px 24px;
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    transform: translateX(400px);
    transition: transform 0.3s ease;
    z-index: 2000;
    max-width: 350px;
}

.toast.show {
    transform: translateX(0);
}

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

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

.toast.info {
    border-left: 4px solid var(--secondary-color);
}

/* Footer */
.footer {
    text-align: center;
    padding: 30px 0;
    margin-top: 50px;
    border-top: 2px solid var(--border-color);
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        width: 100%;
        text-align: left;
    }
    
    .logo h1 {
        font-size: 18px;
    }
    
    .card {
        padding: 16px;
    }
}