/* ============================================
   Reset e Variáveis Globais
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary:        #2563eb;
    --primary-dark:   #1d4ed8;
    --primary-light:  #eff6ff;
    --secondary:      #64748b;
    --success:        #16a34a;
    --success-light:  #f0fdf4;
    --danger:         #dc2626;
    --danger-light:   #fef2f2;
    --warning:        #d97706;
    --warning-light:  #fffbeb;
    --dark:           #1e293b;
    --gray-100:       #f1f5f9;
    --gray-200:       #e2e8f0;
    --gray-300:       #cbd5e1;
    --gray-400:       #94a3b8;
    --gray-500:       #64748b;
    --gray-600:       #475569;
    --white:          #ffffff;
    --shadow-sm:      0 1px 3px rgba(0,0,0,0.08);
    --shadow-md:      0 4px 16px rgba(0,0,0,0.10);
    --shadow-lg:      0 8px 32px rgba(0,0,0,0.13);
    --radius-sm:      6px;
    --radius-md:      10px;
    --radius-lg:      16px;
    --transition:     all 0.2s ease;
    --font:           'Inter', 'Segoe UI', system-ui, sans-serif;
}

html, body {
    height: 100%;
    font-family: var(--font);
    font-size: 15px;
    color: var(--dark);
    background: var(--gray-100);
    line-height: 1.6;
}

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

a:hover { color: var(--primary-dark); }

img { max-width: 100%; }

/* ============================================
   Layout Principal
   ============================================ */
.app-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ---- Topbar / Navbar ---- */
.navbar {
    background: var(--dark);
    color: var(--white);
    padding: 0 2rem;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: -0.3px;
}

.navbar-brand svg {
    color: var(--primary);
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
}

.navbar-nav a {
    color: var(--gray-300);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    font-weight: 500;
    transition: var(--transition);
}

.navbar-nav a:hover,
.navbar-nav a.active {
    background: rgba(255,255,255,0.1);
    color: var(--white);
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.88rem;
    color: var(--gray-300);
}

.navbar-user .user-badge {
    background: var(--primary);
    color: var(--white);
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.navbar-user .user-badge.admin {
    background: var(--warning);
    color: var(--dark);
}

.btn-logout {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    color: var(--gray-300) !important;
    padding: 5px 14px !important;
    border-radius: var(--radius-sm) !important;
    font-size: 0.84rem !important;
    cursor: pointer;
    transition: var(--transition);
}

.btn-logout:hover {
    background: var(--danger) !important;
    border-color: var(--danger) !important;
    color: var(--white) !important;
}

/* ---- Conteúdo ---- */
.main-content {
    flex: 1;
    padding: 2rem;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

.main-content.full-width {
    max-width: 100%;
    padding: 0;
}

/* ---- Footer ---- */
.footer {
    background: var(--dark);
    color: var(--gray-500);
    text-align: center;
    padding: 12px;
    font-size: 0.8rem;
}

/* ============================================
   Componentes — Cards
   ============================================ */
.card {
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    overflow: hidden;
}

.card-header {
    padding: 1.1rem 1.4rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.card-header h2, .card-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-body {
    padding: 1.4rem;
}

/* ============================================
   Componentes — Botões
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
    font-family: var(--font);
}

.btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
}
.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    color: var(--white);
}

.btn-success {
    background: var(--success);
    color: var(--white);
}
.btn-success:hover:not(:disabled) {
    background: #15803d;
    color: var(--white);
}

.btn-danger {
    background: var(--danger);
    color: var(--white);
}
.btn-danger:hover:not(:disabled) {
    background: #b91c1c;
    color: var(--white);
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-600);
}
.btn-secondary:hover:not(:disabled) {
    background: var(--gray-300);
    color: var(--dark);
}

.btn-warning {
    background: var(--warning);
    color: var(--white);
}
.btn-warning:hover:not(:disabled) {
    background: #b45309;
    color: var(--white);
}

.btn-sm {
    padding: 5px 12px;
    font-size: 0.8rem;
}

.btn-icon {
    padding: 7px;
    border-radius: var(--radius-sm);
}

/* ============================================
   Componentes — Formulários
   ============================================ */
.form-group {
    margin-bottom: 1.1rem;
}

.form-group label {
    display: block;
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.form-control {
    width: 100%;
    padding: 9px 13px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-family: var(--font);
    color: var(--dark);
    background: var(--white);
    transition: var(--transition);
    outline: none;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}

.form-control.is-invalid {
    border-color: var(--danger);
}

textarea.form-control {
    resize: vertical;
    min-height: 90px;
}

select.form-control {
    cursor: pointer;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-hint {
    font-size: 0.78rem;
    color: var(--gray-400);
    margin-top: 4px;
}

/* ============================================
   Componentes — Tabelas
   ============================================ */
.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

table thead th {
    background: var(--gray-100);
    color: var(--gray-500);
    font-size: 0.76rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 10px 14px;
    text-align: left;
    border-bottom: 2px solid var(--gray-200);
}

table tbody tr {
    border-bottom: 1px solid var(--gray-100);
    transition: var(--transition);
}

table tbody tr:hover {
    background: var(--gray-100);
}

table tbody td {
    padding: 11px 14px;
    color: var(--dark);
    vertical-align: middle;
}

.actions-cell {
    display: flex;
    gap: 6px;
    align-items: center;
}

/* ============================================
   Componentes — Alertas / Mensagens
   ============================================ */
.alert {
    padding: 11px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.2rem;
    display: flex;
    align-items: flex-start;
    gap: 9px;
    border: 1px solid transparent;
}

.alert-success {
    background: var(--success-light);
    color: #166534;
    border-color: #bbf7d0;
}

.alert-danger {
    background: var(--danger-light);
    color: #991b1b;
    border-color: #fecaca;
}

.alert-warning {
    background: var(--warning-light);
    color: #92400e;
    border-color: #fde68a;
}

.alert-info {
    background: var(--primary-light);
    color: #1e40af;
    border-color: #bfdbfe;
}

/* ============================================
   Componentes — Badges
   ============================================ */
.badge {
    display: inline-block;
    padding: 2px 9px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success { background: #dcfce7; color: #15803d; }
.badge-danger  { background: #fee2e2; color: #dc2626; }
.badge-info    { background: #dbeafe; color: #1d4ed8; }
.badge-warning { background: #fef3c7; color: #d97706; }
.badge-gray    { background: var(--gray-200); color: var(--gray-600); }

/* ============================================
   Componentes — Page Header
   ============================================ */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.6rem;
    gap: 1rem;
    flex-wrap: wrap;
}

.page-header h1 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 10px;
}

.page-header p {
    color: var(--gray-500);
    font-size: 0.875rem;
    margin-top: 3px;
}

/* ============================================
   Componentes — Stats Cards (Dashboard)
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 1rem;
    margin-bottom: 1.8rem;
}

.stat-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 1.2rem 1.4rem;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.stat-icon {
    width: 46px;
    height: 46px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon.blue   { background: #dbeafe; color: var(--primary); }
.stat-icon.green  { background: #dcfce7; color: var(--success); }
.stat-icon.orange { background: #fef3c7; color: var(--warning); }
.stat-icon.red    { background: #fee2e2; color: var(--danger);  }

.stat-info p {
    font-size: 0.78rem;
    color: var(--gray-500);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.stat-info h3 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.1;
}

/* ============================================
   Componentes — Project Cards (Dashboard user)
   ============================================ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.2rem;
}

.project-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 1.3rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.project-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--primary);
}

.project-card-icon {
    width: 44px;
    height: 44px;
    background: var(--primary-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.project-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
}

.project-card p {
    font-size: 0.84rem;
    color: var(--gray-500);
    flex: 1;
}

.project-card-meta {
    font-size: 0.78rem;
    color: var(--gray-400);
    display: flex;
    align-items: center;
    gap: 5px;
}

/* ============================================
   Componentes — Modal
   ============================================ */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    z-index: 999;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-overlay.open {
    display: flex;
}

.modal {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 520px;
    max-height: 92vh;
    overflow-y: auto;
    animation: modalIn 0.2s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(-10px); }
    to   { opacity: 1; transform: scale(1)    translateY(0); }
}

.modal-header {
    padding: 1.2rem 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.modal-body { padding: 1.5rem; }

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.btn-close-modal {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray-400);
    padding: 4px;
    border-radius: 4px;
    transition: var(--transition);
    display: flex;
}

.btn-close-modal:hover { color: var(--danger); background: var(--danger-light); }

/* ============================================
   Página de Login
   ============================================ */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 60%, #1e3a5f 100%);
    padding: 1rem;
}

.login-box {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
    overflow: hidden;
}

.login-header {
    background: var(--dark);
    padding: 2rem;
    text-align: center;
    color: var(--white);
}

.login-logo {
    width: 60px;
    height: 60px;
    background: var(--primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.login-header h1 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.login-header p {
    font-size: 0.82rem;
    color: var(--gray-400);
}

.login-body {
    padding: 2rem;
}

.login-body .btn-primary {
    width: 100%;
    justify-content: center;
    padding: 10px;
    font-size: 0.95rem;
    margin-top: 4px;
}

.login-footer-text {
    text-align: center;
    font-size: 0.78rem;
    color: var(--gray-400);
    margin-top: 1.4rem;
}

/* ============================================
   Upload Zone
   ============================================ */
.upload-zone {
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-md);
    padding: 2.5rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--gray-100);
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: var(--primary);
    background: var(--primary-light);
}

.upload-zone svg {
    color: var(--gray-400);
    margin-bottom: 10px;
}

.upload-zone p {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.upload-zone strong {
    color: var(--primary);
}

.upload-zone input[type="file"] {
    display: none;
}

/* ============================================
   Visualizador STL
   ============================================ */
.viewer-page {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: #0d1117;
}

.viewer-toolbar {
    background: #161b22;
    border-bottom: 1px solid #30363d;
    padding: 0 1rem;
    height: 52px;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.viewer-toolbar .project-info {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
}

.viewer-toolbar .project-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: #e6edf3;
}

.viewer-toolbar .file-name {
    font-size: 0.8rem;
    color: #8b949e;
}

.viewer-toolbar .toolbar-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.viewer-btn {
    background: #21262d;
    border: 1px solid #30363d;
    color: #c9d1d9;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 5px;
    font-family: var(--font);
}

.viewer-btn:hover {
    background: #30363d;
    color: #e6edf3;
}

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

.viewer-container {
    flex: 1;
    position: relative;
    overflow: hidden;
}

#stl-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.viewer-loading {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #0d1117;
    color: #8b949e;
    gap: 16px;
    z-index: 10;
}

.viewer-loading.hidden { display: none; }

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #30363d;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.viewer-info-panel {
    position: absolute;
    bottom: 1rem;
    left: 1rem;
    background: rgba(22,27,34,0.88);
    border: 1px solid #30363d;
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    color: #8b949e;
    font-size: 0.75rem;
    line-height: 1.8;
    backdrop-filter: blur(4px);
}

.viewer-info-panel strong {
    color: #c9d1d9;
}

.viewer-controls-hint {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    background: rgba(22,27,34,0.88);
    border: 1px solid #30363d;
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    color: #8b949e;
    font-size: 0.73rem;
    line-height: 2;
    backdrop-filter: blur(4px);
}

.viewer-controls-hint span {
    display: block;
}

.viewer-controls-hint kbd {
    background: #30363d;
    color: #c9d1d9;
    padding: 1px 6px;
    border-radius: 3px;
    font-size: 0.7rem;
    font-family: monospace;
}

/* ============================================
   Utilitários
   ============================================ */
.text-center  { text-align: center; }
.text-right   { text-align: right; }
.text-muted   { color: var(--gray-500); }
.mt-1  { margin-top: 0.5rem; }
.mt-2  { margin-top: 1rem;   }
.mt-3  { margin-top: 1.5rem; }
.mb-1  { margin-bottom: 0.5rem; }
.mb-2  { margin-bottom: 1rem;   }
.mb-3  { margin-bottom: 1.5rem; }
.d-flex       { display: flex; }
.align-center { align-items: center; }
.gap-1  { gap: 0.5rem; }
.gap-2  { gap: 1rem; }
.flex-1 { flex: 1; }
.w-100  { width: 100%; }
.hidden { display: none !important; }
.divider {
    border: none;
    border-top: 1px solid var(--gray-200);
    margin: 1.2rem 0;
}

/* ============================================
   Responsivo
   ============================================ */
@media (max-width: 768px) {
    .navbar { padding: 0 1rem; }
    .main-content { padding: 1rem; }
    .form-row { grid-template-columns: 1fr; }
    .page-header { flex-direction: column; align-items: flex-start; }
    .navbar-nav { display: none; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .projects-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .modal { margin: 0.5rem; }
}