:root {
    --primary-color: #5f27cd;
    --primary-light: #a29bfe;
    --success-color: #1dd1a1;
    --danger-color: #ff6b6b;
    --warning-color: #feca57;
    --dark-bg: #1a1a2e;
    --card-bg: rgba(255,255,255,0.05);
    --border-color: rgba(255,255,255,0.1);
    --text-primary: #ffffff;
    --text-secondary: rgba(255,255,255,0.7);
}

* {
    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, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 20px;
}

.admin-container {
    max-width: 1400px;
    margin: 0 auto;
}

/* Login Panel */
.panel {
    animation: fadeIn 0.3s ease;
}

.login-card {
    max-width: 400px;
    margin: 100px auto;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
    backdrop-filter: blur(10px);
    text-align: center;
}

.login-card h2 {
    margin-bottom: 10px;
    color: var(--primary-light);
}

.login-card p {
    color: var(--text-secondary);
    margin-bottom: 30px;
}

#loginForm {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

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

.dashboard-header h1 {
    font-size: 2rem;
    margin-bottom: 5px;
}

.dashboard-header p {
    color: var(--text-secondary);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-light);
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-light);
    margin-bottom: 5px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Form Cards */
.form-card, .filters-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
}

.form-card h3, .filters-card h3 {
    margin-bottom: 20px;
    color: var(--primary-light);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 15px;
}

.filter-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr auto auto;
    gap: 15px;
    align-items: center;
}

/* Input Styles */
input[type="text"],
input[type="password"],
textarea,
select {
    width: 100%;
    padding: 12px 15px;
    background: rgba(0,0,0,0.3);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

input[type="text"]:focus,
input[type="password"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary-light);
    background: rgba(0,0,0,0.4);
}

textarea {
    resize: vertical;
    font-family: inherit;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-danger {
    padding: 12px 25px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(95, 39, 205, 0.4);
}

.btn-secondary {
    background: rgba(255,255,255,0.1);
    color: white;
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.15);
}

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

.btn-danger:hover {
    background: #ee5a6f;
}

/* Features Section */
.features-section {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 15px;
    padding: 25px;
    backdrop-filter: blur(10px);
}

.features-section h3 {
    margin-bottom: 20px;
    color: var(--primary-light);
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.feature-item {
    background: rgba(0,0,0,0.3);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    border-color: var(--primary-light);
    transform: translateX(5px);
}

.feature-item.deleted {
    opacity: 0.5;
    border-color: var(--danger-color);
}

.feature-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
}

.feature-title {
    font-size: 1.2rem;
    font-weight: 600;
    flex: 1;
}

.feature-badges {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.badge-category {
    background: rgba(72, 219, 251, 0.2);
    color: #48dbfb;
}

.badge-phase {
    background: rgba(254, 202, 87, 0.2);
    color: #feca57;
}

.badge-status {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.badge-status.planned {
    background: rgba(162, 155, 254, 0.2);
    color: #a29bfe;
}

.badge-status.in_progress {
    background: rgba(254, 202, 87, 0.2);
    color: #feca57;
}

.badge-status.done {
    background: rgba(29, 209, 161, 0.2);
    color: #1dd1a1;
}

.feature-description {
    color: var(--text-secondary);
    margin-bottom: 15px;
    line-height: 1.5;
}

.feature-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.action-btn {
    padding: 8px 16px;
    background: rgba(255,255,255,0.1);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: white;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.action-btn:hover {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

.action-btn.toggle {
    background: rgba(29, 209, 161, 0.2);
    border-color: var(--success-color);
    color: var(--success-color);
}

.action-btn.edit {
    background: rgba(162, 155, 254, 0.2);
    border-color: var(--primary-light);
    color: var(--primary-light);
}

.action-btn.delete {
    background: rgba(255, 107, 107, 0.2);
    border-color: var(--danger-color);
    color: var(--danger-color);
}

.action-btn.restore {
    background: rgba(254, 202, 87, 0.2);
    border-color: var(--warning-color);
    color: var(--warning-color);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(5px);
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    position: relative;
    max-width: 600px;
    margin: 100px auto;
    background: var(--dark-bg);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    padding: 30px;
    animation: slideUp 0.3s ease;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-close {
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-close:hover {
    color: var(--danger-color);
    transform: rotate(90deg);
}

.modal-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 20px;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 15px 25px;
    background: var(--success-color);
    color: white;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.3);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 2000;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.error {
    background: var(--danger-color);
}

.toast.warning {
    background: var(--warning-color);
}

/* Error Message */
.error-message {
    color: var(--danger-color);
    margin-top: 10px;
    font-size: 0.9rem;
}

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

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

/* Responsive */
@media (max-width: 768px) {
    .filter-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .modal-content {
        margin: 50px 20px;
    }
}