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

:root {
    --primary-color: #DC143C;
    --secondary-color: #1E3A8A;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --background: #F8FAFC;
    --card-bg: #ffffff;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --border-color: #E5E7EB;
    --accent-blue: #2563EB;
    --light-red: #FEE2E2;
    --light-blue: #DBEAFE;
    --red-hover: #B91C1C;
    --blue-hover: #1E40AF;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Navbar */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 1rem 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-brand .logo-img {
    height: 60px;
    width: auto;
    display: block;
    object-fit: contain;
    max-height: 60px;
}

.nav-brand-text h1 {
    color: white;
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
    font-weight: 700;
}

.nav-brand-text span {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
    font-style: italic;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-user span {
    color: white;
    font-weight: 500;
}

.nav-user .btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: none;
}

.nav-user .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: none;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

/* Login */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    position: relative;
}

.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../LOGO.png') center center no-repeat;
    background-size: 40%;
    opacity: 0.05;
    pointer-events: none;
}

.login-box {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 420px;
    border-top: 4px solid var(--primary-color);
    position: relative;
    z-index: 1;
}

.logo {
    text-align: center;
    margin-bottom: 2rem;
}

.logo img {
    width: 180px;
    height: auto;
    margin-bottom: 1rem;
    display: block;
    margin-left: auto;
    margin-right: auto;
    max-width: 100%;
    object-fit: contain;
}

.logo h1 {
    color: var(--secondary-color);
    font-size: 2rem;
    margin-bottom: 0.25rem;
    font-weight: 700;
}

.logo h1 .tcf {
    color: var(--primary-color);
}

.logo p {
    color: var(--text-secondary);
    font-style: italic;
    font-size: 0.95rem;
}

.login-box h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

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

.checkbox-group {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem;
}

.checkbox-item {
    padding: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.checkbox-item:hover {
    background-color: var(--background);
}

.checkbox-item input[type="checkbox"] {
    width: auto;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--red-hover) 100%);
    color: white;
    box-shadow: 0 4px 10px rgba(220, 20, 60, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--red-hover) 0%, var(--primary-color) 100%);
    box-shadow: 0 6px 15px rgba(220, 20, 60, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-blue) 100%);
    color: white;
    box-shadow: 0 4px 10px rgba(30, 58, 138, 0.3);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--blue-hover) 100%);
    box-shadow: 0 6px 15px rgba(30, 58, 138, 0.4);
    transform: translateY(-2px);
}

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

.btn-success:hover {
    background-color: #059669;
}

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

.btn-danger:hover {
    background-color: #dc2626;
}

/* Botões de Ação dos Documentos */
.btn-document {
    background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    color: white;
    box-shadow: 0 4px 10px rgba(30, 64, 175, 0.3);
}

.btn-document:hover {
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    box-shadow: 0 6px 15px rgba(30, 64, 175, 0.5);
    transform: translateY(-2px);
}

.btn-status {
    background: linear-gradient(135deg, #dc143c 0%, #ef4444 100%);
    color: white;
    box-shadow: 0 4px 10px rgba(220, 20, 60, 0.3);
}

.btn-status:hover {
    background: linear-gradient(135deg, #b91c1c 0%, #dc2626 100%);
    box-shadow: 0 6px 15px rgba(220, 20, 60, 0.5);
    transform: translateY(-2px);
}

.btn-edit {
    background: linear-gradient(135deg, #d97706 0%, #f59e0b 100%);
    color: white;
    box-shadow: 0 4px 10px rgba(217, 119, 6, 0.3);
}

.btn-edit:hover {
    background: linear-gradient(135deg, #b45309 0%, #d97706 100%);
    box-shadow: 0 6px 15px rgba(217, 119, 6, 0.5);
    transform: translateY(-2px);
}

.btn-delete {
    background: linear-gradient(135deg, #7f1d1d 0%, #991b1b 100%);
    color: white;
    font-size: 1.3rem;
    padding: 0.75rem 1.2rem;
    box-shadow: 0 4px 10px rgba(127, 29, 29, 0.4);
    min-width: 50px;
}

.btn-delete:hover {
    background: linear-gradient(135deg, #991b1b 0%, #b91c1c 100%);
    box-shadow: 0 6px 15px rgba(127, 29, 29, 0.6);
    transform: translateY(-2px) scale(1.05);
}

button[type="submit"] {
    width: 100%;
}

/* Error Message */
.error-message {
    background-color: #fee2e2;
    color: var(--danger-color);
    padding: 0.75rem;
    border-radius: 6px;
    margin-bottom: 1rem;
    display: none;
}

.error-message.show {
    display: block;
}

.success-message {
    background-color: #d1fae5;
    color: var(--success-color);
    padding: 0.75rem;
    border-radius: 6px;
    margin-bottom: 1rem;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    padding: 1rem 2rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.3s;
    margin-bottom: -2px;
}

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

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: 600;
}

.tab-content {
    display: none;
}

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

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.section-header h2 {
    color: var(--secondary-color);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-header h2::before {
    content: '';
    width: 4px;
    height: 30px;
    background: linear-gradient(180deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 2px;
}

/* Documentos Grid */
.documentos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.documento-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
    border-left: 4px solid var(--primary-color);
    position: relative;
    overflow: hidden;
}

.documento-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--light-red) 0%, var(--light-blue) 100%);
    opacity: 0.3;
    border-radius: 0 0 0 100%;
}

.documento-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(227, 24, 55, 0.15);
    border-left-color: var(--secondary-color);
}

.documento-card h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.documento-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.documento-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.documento-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.documento-actions .btn {
    flex: 1;
    min-width: 120px;
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.status-badge.pendente {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.status-badge.assinado {
    background-color: var(--light-blue);
    color: var(--secondary-color);
    border: 1px solid var(--accent-blue);
    font-weight: 600;
}

/* Documentos List (para alunos) */
.documentos-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.documento-item {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.documento-content {
    flex: 1;
}

.documento-content h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.documento-content p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Stats */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: linear-gradient(135deg, white 0%, var(--light-blue) 100%);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    text-align: center;
    border-top: 3px solid var(--secondary-color);
    transition: all 0.3s;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 16px rgba(0, 60, 113, 0.15);
}

.stat-card h3 {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.stat-card.success {
    background: linear-gradient(135deg, white 0%, #d1fae5 100%);
    border-top-color: var(--success-color);
}

.stat-card.success h3 {
    color: var(--success-color);
}

.stat-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Table */
.table-container {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    border-top: 3px solid var(--primary-color);
}

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

thead {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-blue) 100%);
}

th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: white;
    border-bottom: 2px solid rgba(255, 255, 255, 0.2);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

tr:hover {
    background-color: var(--background);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 60, 113, 0.6);
    backdrop-filter: blur(4px);
    overflow-y: auto;
}

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

.modal-content {
    background-color: var(--card-bg);
    margin: 2rem auto;
    padding: 2rem;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    position: relative;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
    border-top: 4px solid var(--primary-color);
    max-height: 90vh;
    overflow-y: auto;
}

.modal-content.modal-large {
    max-width: 1200px;
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-secondary);
    cursor: pointer;
}

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

.modal h2 {
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
    font-weight: 700;
}

/* Assinatura Canvas */
.assinatura-section {
    margin-top: 2rem;
}

.assinatura-section h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

#assinaturaCanvas {
    border: 2px solid var(--secondary-color);
    border-radius: 8px;
    cursor: crosshair;
    display: block;
    margin-bottom: 1rem;
    width: 100%;
    background-color: white;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

.assinatura-controls {
    display: flex;
    gap: 1rem;
}

.assinatura-controls .btn {
    flex: 1;
}

.documento-info {
    background-color: var(--background);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.documento-info h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.documento-info p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.documento-info-large {
    background: linear-gradient(135deg, var(--light-red) 0%, var(--light-blue) 100%);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    margin-bottom: 2rem;
    border-left: 4px solid var(--primary-color);
}

.documento-info-large h2 {
    color: var(--secondary-color);
    margin-bottom: 1rem;
    font-weight: 700;
}

.documento-info-large p {
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.formulario-assinatura {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-top: 3px solid var(--secondary-color);
}

.formulario-assinatura h3 {
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

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

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.95rem;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
    }
    
    .documentos-grid {
        grid-template-columns: 1fr;
    }
    
    .stats {
        grid-template-columns: 1fr;
    }
    
    .documento-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .modal-content {
        width: 95%;
        margin: 1rem;
    }
    
    .tabs {
        flex-direction: column;
        gap: 0;
    }
    
    .tab-btn {
        width: 100%;
        text-align: left;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    #assinaturaCanvas {
        width: 100%;
        height: auto;
    }
}

/* Alert Info */
.alert-info {
    background-color: var(--light-blue);
    border-left: 4px solid var(--accent-blue);
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 4px;
    color: var(--secondary-color);
    font-size: 0.875rem;
}

.alert-info strong {
    font-weight: 600;
    margin-right: 0.5rem;
}