:root {
    --bg-dark: #1e272e;
    --bg-card: #2c3e50;
    --bg-input: #34495e;
    --primary: #0fb9b1;
    --primary-hover: #2bcbba;
    --text-light: #d2dae2;
    --text-muted: #808e9b;
}

* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
}

body { 
    background-color: var(--bg-dark); 
    color: var(--text-light); 
    display: flex; 
    min-height: 100vh; 
}

.sidebar { 
    width: 250px; 
    background-color: var(--bg-card); 
    padding: 30px 20px; 
    display: flex; 
    flex-direction: column; 
    gap: 20px; 
    border-right: 2px solid var(--bg-input); 
}

.sidebar h2 { 
    color: var(--primary); 
    font-size: 20px; 
    text-align: center; 
    margin-bottom: 20px; 
}

.nav-link { 
    color: var(--text-light); 
    text-decoration: none; 
    padding: 12px 15px; 
    border-radius: 8px; 
    transition: 0.3s; 
    font-weight: 500; 
}

.nav-link:hover, .nav-link.active { 
    background-color: var(--primary); 
    color: #fff; 
}

.main-content { 
    flex: 1; 
    padding: 40px; 
    overflow-y: auto; 
}

header { 
    margin-bottom: 40px; 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
}

.header-text h1 { 
    font-size: 20px; 
    color: #fff; 
}

.header-text p { 
    color: var(--text-muted); 
    margin-top: 5px; 
    font-size: 14px;
}   

.auth-buttons {
    display: flex;
    gap: 15px; 
}

.btn-outline {
    padding: 10px 20px;
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
    text-decoration: none;
    border-radius: 8px;
    font-weight: bold;
    transition: 0.3s;
}

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

.btn-solid {
    padding: 10px 20px;
    background-color: var(--primary);
    color: var(--bg-dark);
    text-decoration: none;
    border-radius: 8px;
    font-weight: bold;
    transition: 0.3s;
}

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

header p { 
    color: var(--text-muted); 
    margin-top: 5px; 
}

.dashboard-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); 
    gap: 20px; 
    margin-bottom: 40px; 
}

.card { 
    background-color: var(--bg-card); 
    padding: 25px; 
    border-radius: 12px; 
    box-shadow: 0 4px 6px rgba(0,0,0,0.2); 
    border-top: 4px solid var(--primary); 
}

.card h3 { 
    color: var(--text-muted); 
    font-size: 14px; 
    text-transform: uppercase; 
    margin-bottom: 10px; 
}

.card .valor { 
    font-size: 32px; 
    font-weight: bold; 
    color: #fff; 
}

.section-title { 
    font-size: 22px; 
    margin-bottom: 20px; 
    border-bottom: 2px solid var(--bg-input); 
    padding-bottom: 10px; 
}

.form-medidas { 
    display: flex; 
    gap: 15px; 
    background-color: var(--bg-card); 
    padding: 25px; 
    border-radius: 12px; 
    align-items: flex-end; 
    flex-wrap: wrap; 
}

.form-vertical {
    display: flex;
    flex-direction: column; 
    gap: 15px;
    background-color: var(--bg-card);
    padding: 25px;
    border-radius: 12px;
    max-width: 400px; 
}

.form-vertical select {
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--bg-input);
    background-color: var(--bg-input);
    color: #fff;
    outline: none;
    transition: 0.3s;
    width: 100%;
    font-size: 15px;
}

.form-vertical select:focus {
    border-color: var(--primary);
}

.form-vertical .btn-salvar {
    margin-top: 10px; 

}

.form-vertical .btn-cadastro {
    margin-top: 10px; 
    background-color: var(--primary);
    color: #fff;
}

.area-imc {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    margin-top: 20px;
    margin-bottom: 40px;
}

.area-imc .section-title {
    text-align: center;
    border-bottom: none;
    margin-bottom: 10px;
    font-size: 28px; 
}

.area-imc .section-title::after {
    content: "";
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--primary);
    margin: 10px auto 0;
    border-radius: 2px;
}

.area-imc .form-vertical {
    width: 100%;
    max-width: 500px; 
    padding: 35px; 
    box-shadow: 0 10px 25px rgba(0,0,0,0.4);
}

.area-imc .form-vertical label {
    font-size: 15px;
    font-weight: bold;
    color: var(--text-light);
}

.area-imc .form-vertical input, 
.area-imc .form-vertical select {
    padding: 15px; 
    font-size: 16px;
}

.area-imc .btn-salvar {
    margin-top: 20px;
    padding: 15px;
    font-size: 18px; 
}

.resultado-imc {
    background-color: var(--bg-card);
    width: 100%;
    max-width: 500px;
    margin-top: 30px;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    border-top: 4px solid var(--primary);
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
    animation: aparecer 0.5s ease-out; 
}

.resultado-imc h3 {
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 14px;
    letter-spacing: 1px;
}

.resultado-imc .valor-imc {
    font-size: 56px; 
    font-weight: 900;
    color: #fff;
    margin: 10px 0;
}

@keyframes aparecer {
    from { opacity: 0; transform: translateY(-15px); }
    to { opacity: 1; transform: translateY(0); }
}

.input-group { 
    display: flex; 
    flex-direction: column; 
    gap: 8px; 
    flex: 1; 
    min-width: 150px; 
}

.input-group label { 
    font-size: 14px; 
    color: var(--text-light); 
}

.input-group input { 
    padding: 12px; 
    border-radius: 8px; 
    border: 1px solid var(--bg-input); 
    background-color: var(--bg-input); 
    color: #fff; 
    outline: none; 
    transition: 0.3s;
}

.input-group input:focus { 
    border-color: var(--primary); 
}

button.btn-salvar { 
    background-color: var(--primary); 
    color: #fff; 
    padding: 12px 25px; 
    border: none; 
    border-radius: 8px; 
    font-weight: bold; 
    cursor: pointer; 
    transition: 0.3s; 
    height: 43px;
}

button.btn-salvar:hover { 
    background-color: var(--primary-hover); 
}

.auth-body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--bg-dark);
    padding: 20px;
}

.auth-box {
    background-color: var(--bg-card);
    padding: 40px;
    border-radius: 12px;
    width: 100%;
    max-width: 550px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    border-top: 4px solid var(--primary);
}

.auth-box h2 {
    color: var(--primary);
    text-align: center;
    margin-bottom: 10px;
    font-size: 28px;
}

.auth-box p.subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 30px;
    font-size: 14px;
}

.auth-box form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.auth-box .row {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.auth-box .row .input-group {
    flex: 1;
    min-width: 200px;
}

.auth-link {
    text-align: center;
    margin-top: 25px;
    font-size: 14px;
    color: var(--text-muted);
}

.auth-link a {
    color: var(--primary);
    text-decoration: none;
    font-weight: bold;
    transition: 0.3s;
}

.auth-link a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

@media (max-width: 900px) {
    body {
        flex-direction: column;
        min-height: auto;
    }

    .sidebar {
        width: 100%;
        flex-direction: row;
        align-items: center;
        padding: 12px 15px;
        gap: 8px;
        border-right: none;
        border-bottom: 2px solid var(--bg-input);
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        white-space: nowrap;
    }

    .sidebar h2 {
        font-size: 16px;
        margin-bottom: 0;
        margin-right: 8px;
        flex-shrink: 0;
    }

    .nav-link {
        padding: 8px 12px;
        font-size: 13px;
        flex-shrink: 0;
    }

    .main-content {
        padding: 20px 15px;
        overflow-y: visible;
    }

    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        margin-bottom: 25px;
    }

    .header-text h1 {
        font-size: 18px;
    }

    .profile-container {
        position: static !important;
        align-self: flex-end;
        top: auto;
        right: auto;
    }

    .profile-dropdown {
        right: 0;
        left: auto;
        width: min(240px, calc(100vw - 30px));
    }

    .auth-buttons {
        width: 100%;
        justify-content: flex-end;
    }

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

    .form-medidas,
    .form-vertical {
        max-width: 100%;
        width: 100%;
    }

    .area-imc .form-vertical {
        padding: 20px;
    }

    .resultado-imc .valor-imc {
        font-size: 42px;
    }

    .auth-box {
        padding: 25px;
        max-width: 100%;
    }

    .auth-box .row {
        flex-direction: column;
        gap: 12px;
    }

    .auth-box .row .input-group {
        min-width: 100%;
    }
}

@media (max-width: 480px) {
    .sidebar h2 {
        display: none;
    }

    .nav-link {
        padding: 8px 10px;
        font-size: 12px;
    }

    .card .valor {
        font-size: 26px;
    }

    .resultado-imc .valor-imc {
        font-size: 34px;
    }
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table-responsive table {
    min-width: 500px;
}