:root {
    --primary: #2c5c44;
    --secondary: #28b155;
    --success: #00b894;
    --danger: #d63031;
    --warning: #fdcb6e;
    --bg: #dfe6e9;
    --text: #2d3436;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --border: #ddd;
}

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

body {
    font-family:
        -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial,
        sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.5;
    padding: 20px;
}

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

/* =====================================
   NAVEGAÇÃO
   ===================================== */
nav {
    background: var(--primary);
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav a {
    color: var(--white);
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 5px;
    font-weight: 500;
    font-size: 14px;
    transition: background 0.3s;
}

nav a:hover {
    background: rgba(255, 255, 255, 0.2);
}

nav a.active {
    background: rgba(255, 255, 255, 0.3);
}

/* =====================================
   HEADER
   ===================================== */
header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    color: var(--primary);
    font-size: 28px;
    margin: 10px 0;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

header p {
    color: #666;
    font-size: 16px;
}

.avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    display: block;
    margin: 0 auto;
}

/* =====================================
   CARDS
   ===================================== */
.card {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

/* =====================================
   ESTATÍSTICAS
   ===================================== */
.stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.stat-card {
    background: var(--white);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.stat-card strong {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
}

.stat-card span {
    display: block;
    color: #666;
    font-size: 14px;
    margin-top: 5px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin: 15px 0;
}

.stat-item {
    background: var(--light-gray);
    padding: 15px;
    border-radius: 8px;
    text-align: center;
}

.stat-item .number {
    font-size: 28px;
    font-weight: bold;
    color: var(--danger);
    display: block;
}

.stat-item .label {
    color: #6c757d;
    font-size: 14px;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    font-size: 14px;
    color: var(--text);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 16px;
    transition:
        border-color 0.3s,
        box-shadow 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(44, 92, 68, 0.15);
}

.form-group input.error {
    border-color: var(--danger);
}

.form-group input.success {
    border-color: var(--success);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.input-wrapper {
    position: relative;
}

.input-wrapper input {
    padding-right: 35px;
}

.phone-mask-hint {
    font-size: 12px;
    color: #6c757d;
    margin-top: 5px;
}

.phone-mask-hint i {
    margin-right: 5px;
}

/* =====================================
   CHECKBOX E SWITCH
   ===================================== */
.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    cursor: pointer;
    margin-bottom: 0;
    font-weight: 500;
}

.checkbox-group input[type='checkbox'] {
    width: 20px;
    height: 20px;
    margin-right: 10px;
    cursor: pointer;
    accent-color: var(--primary);
}

.switch-container {
    display: flex;
    align-items: center;
}

.switch-container input[type='checkbox'] {
    width: 20px;
    height: 20px;
    margin-right: 10px;
    cursor: pointer;
    accent-color: var(--primary);
}

/* =====================================
   BOTÕES
   ===================================== */
.btn {
    display: inline-block;
    padding: 12px 24px;
    background: var(--primary);
    color: var(--white);
    text-decoration: none;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition:
        background 0.3s,
        transform 0.1s;
}

.btn:hover {
    background: #1e4a35;
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

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

.btn-success:hover {
    background: #00a381;
}

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

.btn-danger:hover {
    background: #b52a2a;
}

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

.btn-warning:hover {
    background: #f0b830;
}

.btn-secondary {
    background: #6c757d;
    color: var(--white);
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-sm {
    padding: 5px 12px;
    font-size: 13px;
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 15px 0;
}

/* =====================================
   TABELAS
   ===================================== */
.table-container {
    overflow-x: auto;
    margin-top: 15px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

table th {
    background: var(--light-gray);
    padding: 12px 15px;
    text-align: left;
    border-bottom: 2px solid var(--border);
    font-weight: 600;
    color: var(--text);
    position: sticky;
    top: 0;
}

table td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--border);
}

table tr:hover {
    background: rgba(44, 92, 68, 0.05);
}

table tr.edit-row td {
    background-color: #fff3cd;
}

/* =====================================
   BADGES
   ===================================== */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.badge-self {
    background: #d4edda;
    color: #155724;
}

.badge-guardian {
    background: #fff3cd;
    color: #856404;
}

/* =====================================
   ALERTAS
   ===================================== */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-weight: 500;
}

.alert.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert.danger {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert.warning {
    background: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

/* =====================================
   EDIÇÃO DE ALUNO
   ===================================== */
.edit-form-container {
    background: var(--light-gray);
    border: 2px solid var(--primary);
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 20px;
}

.edit-form-container h3 {
    color: var(--primary);
    margin-bottom: 15px;
    font-size: 20px;
}

.edit-form-container h4 {
    color: var(--text);
    margin: 15px 0 10px;
    font-size: 16px;
}

/* =====================================
   AÇÕES
   ===================================== */
.action-buttons {
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

/* =====================================
   CONFIRMAÇÃO DE EXCLUSÃO
   ===================================== */
.confirm-group {
    margin: 15px 0;
    padding: 15px;
    background: #f8d7da;
    border-radius: 8px;
    border: 1px solid #f5c6cb;
}

.confirm-group label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: 500;
    color: #721c24;
}

.confirm-group input[type='checkbox'] {
    width: 20px;
    height: 20px;
    margin-right: 10px;
    cursor: pointer;
    accent-color: var(--danger);
}

/* =====================================
   WARNING BOX
   ===================================== */
.warning-box {
    background: #fff3cd;
    border: 2px solid #ffc107;
    border-radius: 8px;
    padding: 20px;
    margin: 15px 0;
    text-align: center;
}

.warning-box .icon {
    font-size: 48px;
    display: block;
    margin-bottom: 10px;
}

.danger-text {
    color: var(--danger);
    font-weight: bold;
}

/* =====================================
   TABS
   ===================================== */
.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border);
    padding-bottom: 10px;
}

.tab-btn {
    padding: 10px 20px;
    background: var(--light-gray);
    border: 1px solid var(--border);
    border-radius: 5px 5px 0 0;
    cursor: pointer;
    text-decoration: none;
    color: var(--text);
    transition: all 0.3s;
    font-weight: 500;
}

.tab-btn:hover {
    background: #e9ecef;
}

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

.tab-btn .badge {
    display: inline-block;
    background: var(--danger);
    color: var(--white);
    border-radius: 50%;
    padding: 0 8px;
    font-size: 12px;
    margin-left: 5px;
}

.tab-btn.active .badge {
    background: var(--white);
    color: var(--primary);
}

.tab-content {
    background: var(--white);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* =====================================
   STUDENT ITEM (LISTA)
   ===================================== */
.student-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    border-bottom: 1px solid #eee;
}

.student-info {
    flex: 1;
}

.student-actions {
    display: flex;
    gap: 5px;
}

/* =====================================
   UTILITÁRIOS
   ===================================== */
.hidden {
    display: none !important;
}

hr {
    margin: 20px 0;
    border: 0;
    border-top: 1px solid var(--border);
}

.text-center {
    text-align: center;
}

.text-muted {
    color: #6c757d;
}

.mt-10 {
    margin-top: 10px;
}

.mb-10 {
    margin-bottom: 10px;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.empty-message {
    text-align: center;
    color: #6c757d;
    padding: 40px;
    font-size: 16px;
}

.empty-message i {
    font-size: 48px;
    display: block;
    color: #ccc;
    margin-bottom: 10px;
}

/* =====================================
   LINK ADMIN
   ===================================== */
.link-admin {
    font-size: 14px;
    color: var(--primary);
    text-decoration: none;
}

.link-admin:hover {
    text-decoration: underline;
}

/* =====================================
   RESPONSIVIDADE
   ===================================== */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 10px;
    }

    .stats {
        grid-template-columns: 1fr;
    }

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

    .tabs {
        flex-direction: column;
    }

    .tab-btn {
        border-radius: 5px;
        text-align: center;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }

    .btn-group {
        flex-direction: column;
    }

    .btn-group .btn {
        width: 100%;
        text-align: center;
    }

    nav {
        flex-direction: column;
        align-items: stretch;
        gap: 5px;
    }

    nav a {
        text-align: center;
        padding: 10px;
    }

    table {
        font-size: 12px;
    }

    table th,
    table td {
        padding: 8px 10px;
    }

    .action-buttons {
        flex-direction: column;
    }

    header h1 {
        font-size: 22px;
    }

    .avatar {
        width: 80px;
        height: 80px;
    }

    .stat-card strong {
        font-size: 24px;
    }

    .card {
        padding: 15px;
    }

    .edit-form-container {
        padding: 15px;
    }
}

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

    table {
        font-size: 11px;
    }

    table th,
    table td {
        padding: 6px 8px;
    }

    .btn {
        padding: 10px 16px;
        font-size: 14px;
    }

    .btn-sm {
        padding: 4px 8px;
        font-size: 11px;
    }
}