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

:root {
    --primary: #00d9ff;
    --secondary: #e94560;
    --success: #00ff88;
    --warning: #ffc107;
    --danger: #e94560;
    --info: #17a2b8;
    --dark: #1a1a2e;
    --darker: #16213e;
    --darkest: #0f3460;
    --light: #eaeaea;
    --muted: #6a6a8a;
}

body {
    background-color: var(--dark);
    color: var(--light);
    min-height: 100vh;
    line-height: 1.6;
}

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

a:hover {
    text-decoration: underline;
}

/* Navbar */
.navbar {
    background: var(--darker);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--darkest);
}

.nav-brand {
    font-size: 1.3rem;
    font-weight: bold;
    color: var(--primary);
}

.nav-brand a {
    color: inherit;
}

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

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

/* Auth */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.auth-box {
    background: var(--darker);
    padding: 40px;
    border-radius: 15px;
    width: 100%;
    max-width: 400px;
}

.auth-box h1 {
    text-align: center;
    color: var(--primary);
    margin-bottom: 30px;
}

.otp-info {
    text-align: center;
    margin-bottom: 20px;
    color: var(--muted);
}

.otp-input {
    text-align: center;
    font-size: 1.5rem;
    letter-spacing: 5px;
}

.resend-form {
    text-align: center;
    margin-top: 15px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--light);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    background: var(--darkest);
    border: 1px solid var(--darkest);
    border-radius: 8px;
    color: var(--light);
    font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    text-align: center;
    transition: all 0.3s;
}

.btn:hover {
    transform: translateY(-2px);
    text-decoration: none;
}

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

.btn-primary:hover {
    background: #00b8d4;
}

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

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

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

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

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

.btn-link {
    background: transparent;
    color: var(--primary);
    padding: 5px;
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.btn-large {
    padding: 18px 36px;
    font-size: 1.2rem;
    width: 100%;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.alert-success {
    background: rgba(0, 255, 136, 0.15);
    border: 1px solid var(--success);
    color: var(--success);
}

.alert-error {
    background: rgba(233, 69, 96, 0.15);
    border: 1px solid var(--danger);
    color: var(--danger);
}

.alert-warning {
    background: rgba(255, 193, 7, 0.15);
    border: 1px solid var(--warning);
    color: var(--warning);
}

/* Cards */
.card {
    background: var(--darker);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 20px;
}

.card-header {
    background: var(--darkest);
    padding: 15px 20px;
}

.card-header h2 {
    color: var(--primary);
    font-size: 1.1rem;
}

.card-body {
    padding: 20px;
}

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

.stat-card {
    background: var(--darker);
    padding: 25px;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--darkest);
}

.stat-card.success {
    border-color: var(--success);
}

.stat-card.warning {
    border-color: var(--warning);
}

.stat-card.info {
    border-color: var(--info);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary);
}

.stat-label {
    color: var(--muted);
    margin-top: 5px;
}

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

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

.table th,
.table td {
    padding: 12px 15px;
    text-align: right;
    border-bottom: 1px solid var(--darkest);
}

.table th {
    background: var(--darkest);
    color: var(--primary);
    font-weight: bold;
}

.table tr:hover {
    background: rgba(0, 217, 255, 0.05);
}

.actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.inline-form {
    display: inline;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
}

.badge-success {
    background: rgba(0, 255, 136, 0.2);
    color: var(--success);
}

.badge-warning {
    background: rgba(255, 193, 7, 0.2);
    color: var(--warning);
}

.badge-danger {
    background: rgba(233, 69, 96, 0.2);
    color: var(--danger);
}

/* Dashboard */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.dashboard-header h1 {
    color: var(--primary);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 20px;
    color: var(--muted);
}

.empty-state-box {
    text-align: center;
    padding: 60px 20px;
    background: var(--darker);
    border-radius: 12px;
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.empty-state-box h2 {
    color: var(--light);
    margin-bottom: 10px;
}

.empty-state-box p {
    color: var(--muted);
    margin-bottom: 20px;
}

/* Invitations Grid */
.invitations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.invitation-card {
    background: var(--darker);
    border-radius: 12px;
    overflow: hidden;
}

.invitation-image {
    height: 180px;
    overflow: hidden;
    background: var(--darkest);
}

.invitation-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.invitation-info {
    padding: 15px;
}

.invitation-info h3 {
    margin-bottom: 10px;
    color: var(--light);
}

.invitation-meta {
    display: flex;
    justify-content: space-between;
    color: var(--muted);
    font-size: 0.9rem;
}

.invitation-progress {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 10px;
}

.progress-bar-small {
    flex: 1;
    height: 6px;
    background: var(--darkest);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill-small {
    height: 100%;
    background: var(--success);
}

.invitation-actions {
    padding: 15px;
    padding-top: 0;
    display: flex;
    gap: 10px;
}

/* Status Colors */
.status-pending {
    color: var(--warning);
}

.status-processing {
    color: var(--info);
}

.status-completed {
    color: var(--success);
}

.status-failed {
    color: var(--danger);
}

/* Page Header */
.page-header {
    margin-bottom: 30px;
}

.back-link {
    display: inline-block;
    margin-bottom: 15px;
    color: var(--muted);
}

.page-header h1 {
    color: var(--primary);
}

/* Steps */
.create-steps,
.steps {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.step {
    background: var(--darker);
    border-radius: 12px;
    overflow: hidden;
}

.step-header {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 20px;
    background: var(--darkest);
}

.step-number {
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: var(--dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.step-title {
    font-weight: bold;
}

.step-content {
    padding: 20px;
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--darkest);
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s;
    position: relative;
    cursor: pointer;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--primary);
    background: rgba(0, 217, 255, 0.05);
}

.upload-zone input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-zone p {
    color: var(--muted);
    margin: 10px 0;
}

.hint {
    font-size: 0.85rem;
    color: var(--muted);
}

/* Preview Box */
.preview-box {
    margin-top: 15px;
    text-align: center;
}

.preview-box img {
    max-width: 300px;
    max-height: 200px;
    border-radius: 8px;
    border: 2px solid var(--darkest);
}

/* Canvas */
.canvas-controls {
    margin-bottom: 15px;
}

.canvas-wrapper {
    display: flex;
    justify-content: center;
    padding: 20px;
    background: var(--darkest);
    border-radius: 10px;
    overflow: auto;
    min-height: 300px;
}

#canvas {
    border: 2px dashed var(--darker);
    border-radius: 5px;
}

.coords-display {
    margin-top: 15px;
    padding: 12px;
    background: var(--darkest);
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.coords-display code {
    color: var(--success);
    font-family: monospace;
}

/* Progress Bar */
.progress-bar {
    height: 25px;
    background: var(--darkest);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--success));
    width: 0%;
    transition: width 0.3s;
    border-radius: 12px;
}

/* Status Info */
.status-info {
    padding: 12px;
    border-radius: 8px;
    text-align: center;
    font-weight: bold;
}

.status-info.ready {
    background: rgba(0, 255, 136, 0.15);
    border: 1px solid var(--success);
    color: var(--success);
}

.status-info.warning {
    background: rgba(255, 193, 7, 0.15);
    border: 1px solid var(--warning);
    color: var(--warning);
}

.status-info.error {
    background: rgba(233, 69, 96, 0.15);
    border: 1px solid var(--danger);
    color: var(--danger);
}

/* View Grid */
.view-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.invitation-preview {
    text-align: center;
    margin-bottom: 20px;
}

.invitation-preview img {
    max-width: 100%;
    max-height: 300px;
    border-radius: 8px;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.info-item {
    display: flex;
    justify-content: space-between;
    padding: 10px;
    background: var(--darkest);
    border-radius: 6px;
}

.info-label {
    color: var(--muted);
}

/* Barcodes List */
.barcodes-list {
    max-height: 400px;
    overflow-y: auto;
}

.barcode-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid var(--darkest);
}

.barcode-name {
    font-family: monospace;
    font-size: 0.9rem;
}

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

.text-muted {
    color: var(--muted);
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
    }
    
    .dashboard-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .view-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .table th,
    .table td {
        padding: 8px 10px;
        font-size: 0.85rem;
    }
    
    .actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .invitations-grid {
        grid-template-columns: 1fr;
    }
}