:root {
    --bg-deep: #000000;
    --bg-card: #080808;
    --border-subtle: #222222;
    --border-focus: #ffffff;
    --text-main: #ffffff;
    --text-muted: #666666;
    --accent-glow: rgba(255, 255, 255, 0.15);
    --danger: #ff4444;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-deep);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    letter-spacing: 0.5px;
    overflow-x: hidden;
}

/* Utilities */
.hidden { display: none !important; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); font-size: 0.85rem; }
.highlight-text { color: #fff; text-shadow: 0 0 10px rgba(255, 255, 255, 0.3); }

/* Animations */
@keyframes slideUpFade {
    0% { opacity: 0; transform: translateY(30px); }
    100% { opacity: 1; transform: translateY(0); }
}

@keyframes pulseGlow {
    0% { box-shadow: 0 0 0 0 var(--accent-glow); }
    70% { box-shadow: 0 0 10px 5px transparent; }
    100% { box-shadow: 0 0 0 0 transparent; }
}

.fade-in {
    animation: slideUpFade 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Layout */
.main-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 20px;
    width: 100%;
}

header {
    display: flex;
    flex-direction: column;
    margin-bottom: 40px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    width: 100%;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-subtle);
}

.header-content h1 {
    font-weight: 800;
    letter-spacing: 4px;
    font-size: 2.2rem;
}

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

.user-details {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

#userDisplay {
    font-weight: 600;
    font-size: 1rem;
    text-transform: uppercase;
}

.role-badge {
    font-size: 0.65rem;
    letter-spacing: 1px;
    color: var(--text-muted);
    border: 1px solid var(--border-subtle);
    padding: 2px 6px;
    border-radius: 2px;
    margin-top: 4px;
}

/* Auth Section */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    width: 100%;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: transparent;
    padding: 40px;
    border: 1px solid var(--border-subtle);
    border-radius: 2px;
    backdrop-filter: blur(10px);
}

.auth-card h2 {
    text-align: center;
    font-weight: 800;
    letter-spacing: 4px;
    font-size: 2rem;
    margin-bottom: 5px;
}

.subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    letter-spacing: 2px;
    margin-bottom: 30px;
}

.auth-card input,
.auth-card select {
    margin-bottom: 20px;
}

.toggle-text {
    margin-top: 25px;
    text-align: center;
    font-size: 0.8rem;
    letter-spacing: 1px;
}

.toggle-text a {
    color: #fff;
    text-decoration: none;
    border-bottom: 1px solid #fff;
    padding-bottom: 2px;
    transition: 0.3s;
}

.toggle-text a:hover {
    color: var(--text-muted);
    border-color: var(--text-muted);
}

/* Navigation */
.nav-tabs {
    display: flex;
    gap: 20px;
    border-bottom: 1px solid var(--border-subtle);
}

.tab-btn {
    background: transparent;
    color: var(--text-muted);
    border: none;
    padding: 10px 0;
    font-size: 0.85rem;
    letter-spacing: 2px;
    font-weight: 600;
    position: relative;
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--text-main);
    transition: width 0.3s ease;
}

.tab-btn:hover,
.tab-btn.active {
    color: var(--text-main);
}

.tab-btn.active::after {
    width: 100%;
}

/* Cards & Sections */
.card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 4px;
    margin-bottom: 30px;
    border: 1px solid var(--border-subtle);
    animation: slideUpFade 0.5s ease-out forwards;
}

.card h3 {
    font-weight: 600;
    letter-spacing: 2px;
    font-size: 1.1rem;
    margin-bottom: 25px;
    text-transform: uppercase;
    border-left: 3px solid #fff;
    padding-left: 10px;
}

/* Forms */
.grid-form {
    display: grid;
    grid-template-columns: 2fr 2fr 2fr 1fr;
    gap: 20px;
    margin-bottom: 25px;
}

.input-group label {
    display: block;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    letter-spacing: 1px;
}

input, select {
    width: 100%;
    background: transparent;
    border: 1px solid var(--border-subtle);
    color: var(--text-main);
    padding: 12px 15px;
    border-radius: 2px;
    outline: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

input:focus, select:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 15px var(--accent-glow);
}

option {
    background-color: var(--bg-deep);
    color: var(--text-main);
}

.input-password-group {
    position: relative;
    width: 100%;
    margin-bottom: 20px;
}

.input-password-group input {
    margin-bottom: 0 !important;
    padding-right: 40px;
}

#togglePasswordIcon {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.3s ease;
    font-size: 20px;
}

#togglePasswordIcon:hover {
    color: var(--text-main);
}

.search-container {
    position: relative;
    margin-bottom: 20px;
}

.search-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    font-size: 20px;
}

.search-container input {
    padding-left: 45px;
    border-radius: 30px;
    background: var(--bg-card);
}

/* Buttons */
button {
    cursor: pointer;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 2px;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    border-radius: 2px;
}

.btn-primary {
    background: var(--text-main);
    color: var(--bg-deep);
    border: 1px solid var(--text-main);
    padding: 15px;
    width: 100%;
}

.btn-primary:hover {
    background: transparent;
    color: var(--text-main);
    box-shadow: 0 0 20px var(--accent-glow);
}

.btn-outline {
    background: transparent;
    color: var(--text-main);
    border: 1px solid var(--border-subtle);
    padding: 12px 20px;
}

.btn-outline:hover {
    border-color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
}

.btn-logout {
    background: transparent;
    color: var(--text-muted);
    border: none;
    padding: 5px 10px;
    font-size: 0.75rem;
}

.btn-logout:hover {
    color: var(--danger);
}

.btn-warning {
    background: transparent;
    color: var(--text-main);
    border: 1px dashed var(--border-subtle);
    padding: 8px 15px;
}

.btn-warning:hover {
    border-style: solid;
    border-color: var(--text-main);
}

.btn-icon {
    background: transparent;
    border: 1px solid var(--border-subtle);
    color: var(--text-main);
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.btn-icon:hover {
    border-color: var(--text-main);
    background: var(--text-main);
    color: var(--bg-deep);
}

.btn-delete {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border-subtle);
    padding: 6px 12px;
    font-size: 0.7rem;
}

.btn-delete:hover {
    border-color: var(--danger);
    color: var(--danger);
    box-shadow: 0 0 10px rgba(255, 68, 68, 0.2);
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.7rem;
}

/* Tables */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 0.9rem;
}

th {
    color: var(--text-muted);
    font-size: 0.7rem;
    letter-spacing: 2px;
    font-weight: 600;
}

tr {
    transition: background 0.3s;
}

tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Custom UI Components */
.manage-row {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.material-tag {
    background-color: transparent;
    color: var(--text-main);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--border-subtle);
    transition: all 0.3s ease;
    animation: fadeIn 0.3s ease;
}

.material-tag:hover {
    border-color: #555;
    background: rgba(255, 255, 255, 0.05);
}

.remove-tag {
    font-size: 16px !important;
    color: var(--danger);
    cursor: pointer;
    transition: 0.3s;
    opacity: 0.7;
}

.remove-tag:hover {
    opacity: 1;
    transform: scale(1.1);
}

.kit-builder {
    background: #050505;
    border: 1px solid var(--border-subtle);
    padding: 20px;
    margin: 20px 0;
    border-radius: 2px;
}

.builder-controls {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.preview-list {
    margin-top: 15px;
    list-style: none;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.preview-list li {
    padding: 5px 0;
    border-bottom: 1px dashed var(--border-subtle);
    display: flex;
    justify-content: space-between;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.kit-card {
    border-top: 2px solid var(--text-main);
}

.kit-content-list {
    margin: 15px 0;
    padding-left: 0;
    list-style: none;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.kit-content-list li {
    margin-bottom: 5px;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.85);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
}

.modal-content {
    width: 90%;
    max-width: 450px;
    position: relative;
    border-top: 3px solid #fff;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
}

.modal-close-btn {
    position: absolute;
    right: 15px;
    top: 25px;
    background: transparent;
    border: none;
    color: var(--danger);
    font-size: 1.2rem;
    cursor: pointer;
    transition: 0.3s;
    font-weight: bold;
}

.modal-header-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 5px;
    padding-right: 20px;
}

.modal-header-info {
    margin-bottom: 15px;
    font-size: 0.8rem;
}

.modal-search-input {
    margin-bottom: 15px;
    width: 100%;
    padding: 10px;
    border-radius: 4px;
    border: 1px solid var(--border-subtle);
    background: var(--bg-deep);
    color: var(--text-main);
}

.modal-item-list {
    margin: 0;
    padding: 0;
    list-style: none;
    overflow-y: auto;
    flex-grow: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .grid-form {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .header-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .user-info {
        flex-direction: column;
    }

    .user-details {
        align-items: center;
    }

    .builder-controls {
        flex-direction: column;
    }
}