/* ===== ROOT VARIABLES ===== */
:root {
    --primary-color: #1A535C;
    --secondary-color: #4ECDC4;
    --light-color: #F7FFF7;
    --accent-color: #FF6B6B;
    --warning-color: #FFE66D;
    
    /* Cores de texto melhoradas para melhor contraste */
    --text-primary: #2c3e50;
    --text-secondary: #5a6c7d;
    --text-muted: #6c757d;
    --text-light: #8e9aaf;
    
    --dark-bg: #0f1419;
    --dark-surface: #1e2328;
    --dark-text: #f0f6fc;
    --dark-text-secondary: #c9d1d9;
    --dark-text-muted: #8b949e;
    --dark-border: #30363d;
    
    --transition: all 0.3s ease;
    --border-radius: 12px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --box-shadow-hover: 0 8px 15px rgba(0, 0, 0, 0.2);
}

/* ===== GLOBAL STYLES ===== */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--light-color);
    transition: var(--transition);
}

/* ===== DARK MODE ===== */
[data-bs-theme="dark"] {
    --bs-body-bg: var(--dark-bg);
    --bs-body-color: var(--dark-text);
    --bs-border-color: var(--dark-border);
}

[data-bs-theme="dark"] body {
    background-color: var(--dark-bg);
    color: var(--dark-text);
}

/* Melhorar contraste de texto em modo escuro */
[data-bs-theme="dark"] .text-muted {
    color: var(--dark-text-muted) !important;
}

[data-bs-theme="dark"] .text-secondary {
    color: var(--dark-text-secondary) !important;
}

[data-bs-theme="dark"] .lead {
    color: var(--dark-text-secondary) !important;
}

/* Melhorar contraste de text-muted no modo claro */
.text-muted {
    color: var(--text-muted) !important;
}

.text-secondary {
    color: var(--text-secondary) !important;
}

.lead {
    color: var(--text-secondary);
}

[data-bs-theme="dark"] .bg-light {
    background-color: var(--dark-surface) !important;
    color: var(--dark-text) !important;
}

[data-bs-theme="dark"] .card {
    background-color: var(--dark-surface);
    border-color: var(--dark-border);
    color: var(--dark-text);
}

[data-bs-theme="dark"] .modal-content {
    background-color: var(--dark-surface);
    color: var(--dark-text);
}

[data-bs-theme="dark"] .offcanvas {
    background-color: var(--dark-surface);
    color: var(--dark-text);
}

[data-bs-theme="dark"] .accordion-item {
    background-color: var(--dark-surface);
    border-color: var(--dark-border);
}

[data-bs-theme="dark"] .accordion-button {
    background-color: var(--dark-surface);
    color: var(--dark-text);
    border-color: var(--dark-border);
}

[data-bs-theme="dark"] .accordion-button:not(.collapsed) {
    background-color: var(--primary-color);
    color: white;
}

[data-bs-theme="dark"] .list-group-item {
    background-color: var(--dark-surface);
    border-color: var(--dark-border);
    color: var(--dark-text);
}


/* ===== BOOTSTRAP CUSTOMIZATIONS ===== */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transition: var(--transition);
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: #145258;
    border-color: #145258;
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-hover);
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background-color: transparent;
}

[data-bs-theme="dark"] .btn-outline-primary {
    color: var(--secondary-color);
    border-color: var(--secondary-color);
    background-color: transparent;
}

.btn-outline-primary:hover,
.btn-outline-primary:focus {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

[data-bs-theme="dark"] .btn-outline-primary:hover,
[data-bs-theme="dark"] .btn-outline-primary:focus {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--dark-bg);
}

.bg-primary {
    background-color: var(--primary-color) !important;
}

.text-primary {
    color: var(--primary-color) !important;
}

.bg-success {
    background-color: var(--secondary-color) !important;
}

.text-success {
    color: var(--secondary-color) !important;
}

.bg-warning {
    background-color: var(--warning-color) !important;
    color: #2c3e50 !important;
}

[data-bs-theme="dark"] .bg-warning {
    background-color: #d4a017 !important;
    color: #0f1419 !important;
}

.bg-info {
    background-color: #17a2b8 !important;
    color: white !important;
}

.text-info {
    color: #17a2b8 !important;
}

[data-bs-theme="dark"] .text-info {
    color: #58a6ff !important;
}

/* ===== NAVBAR ===== */
.navbar {
    box-shadow: var(--box-shadow);
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    transition: var(--transition);
}

.navbar-brand:hover {
    transform: scale(1.05);
}

/* ===== CARDS ===== */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-hover);
}

.card-header {
    border-bottom: none;
    font-weight: 600;
    padding: 1.25rem 1.5rem;
}

.card-body {
    padding: 1.5rem;
}

/* ===== FORM ELEMENTS ===== */
.form-control {
    border-radius: 8px;
    border: 2px solid #e9ecef;
    padding: 0.75rem 1rem;
    transition: var(--transition);
    font-size: 1rem;
    min-height: 48px; /* Melhor para touch */
    color: var(--text-primary);
    background-color: #ffffff;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(26, 83, 92, 0.25);
    color: var(--text-primary);
    background-color: #ffffff;
}

.form-label {
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-weight: 500;
    font-size: 1rem;
}

/* Input groups responsivos */
.input-group-lg .form-control {
    padding: 1rem 1.25rem;
    font-size: 1.125rem;
    min-height: 56px;
}

.input-group-lg .input-group-text {
    padding: 1rem 1.25rem;
    font-size: 1.125rem;
    font-weight: 600;
}

/* ===== CLEAN FORM STYLES ===== */

/* Formulário clean e profissional */
.needs-validation .form-label {
    color: var(--text-primary);
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
}

/* Input groups otimizados */
.input-group-lg .form-control {
    border-left: none;
    padding-left: 0.75rem;
}

.input-group-lg .input-group-text {
    border-right: none;
    font-size: 0.9rem;
    min-width: 60px;
    justify-content: center;
}

/* Botões de gênero melhorados */
.btn-check:checked + .btn-outline-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(26, 83, 92, 0.2);
}

.btn-outline-primary {
    border-width: 2px;
    transition: all 0.2s ease;
}

.btn-outline-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(26, 83, 92, 0.1);
}

/* Botão de submit clean */
.btn-primary {
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(26, 83, 92, 0.3);
}

/* Validação visual */
.was-validated .form-control:invalid {
    border-color: #dc3545;
}

.was-validated .form-control:valid {
    border-color: #198754;
}

/* Responsividade para mobile */
@media (max-width: 576px) {
    .input-group-lg .form-control {
        font-size: 16px;
    }
    
    .input-group-lg .input-group-text {
        font-size: 0.85rem;
        min-width: 50px;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
    }
}

[data-bs-theme="dark"] .form-control {
    background-color: var(--dark-surface);
    border-color: var(--dark-border);
    color: var(--dark-text);
}

[data-bs-theme="dark"] .form-control:focus {
    background-color: var(--dark-surface);
    border-color: var(--primary-color);
    color: var(--dark-text);
    box-shadow: 0 0 0 0.2rem rgba(26, 83, 92, 0.25);
}

[data-bs-theme="dark"] .form-label {
    color: var(--dark-text);
}

/* Melhorar legibilidade de elementos específicos no modo escuro */
[data-bs-theme="dark"] .text-dark {
    color: var(--dark-text) !important;
}

[data-bs-theme="dark"] .card-title {
    color: var(--dark-text);
}

[data-bs-theme="dark"] .card-text {
    color: var(--dark-text-secondary);
}

[data-bs-theme="dark"] .small {
    color: var(--dark-text-muted);
}

[data-bs-theme="dark"] .display-1,
[data-bs-theme="dark"] .display-2,
[data-bs-theme="dark"] .display-3,
[data-bs-theme="dark"] .display-4 {
    color: var(--dark-text);
}

.input-group-text {
    background-color: #f8f9fa;
    border: 2px solid #e9ecef;
    border-left: none;
    font-weight: 500;
    color: var(--text-primary);
}

[data-bs-theme="dark"] .input-group-text {
    background-color: var(--dark-surface);
    border-color: var(--dark-border);
    color: var(--dark-text);
    font-weight: 500;
}

/* ===== BUTTONS ===== */
.btn {
    border-radius: 8px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: var(--transition);
}

.btn:hover::before {
    left: 100%;
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1.125rem;
}

.btn-check:checked + .btn-outline-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* ===== PROGRESS BARS ===== */
.progress {
    border-radius: 10px;
    overflow: hidden;
    background-color: #e9ecef;
}

.progress-bar {
    transition: width 1s ease-in-out;
    border-radius: 10px;
}

[data-bs-theme="dark"] .progress {
    background-color: var(--dark-border);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.pulse-animation {
    animation: pulse 2s infinite;
}

/* ===== RESULTS SECTION ===== */
#resultsSection {
    animation: fadeInUp 0.8s ease-out;
}

.display-3, .display-4 {
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

/* ===== CHART CONTAINER ===== */
#bodyFatChart {
    max-width: 100%;
    height: 300px;
    width: 100%;
    position: relative;
}

.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}


/* ===== ACCORDION ===== */
.accordion-button {
    font-weight: 500;
    border-radius: 8px !important;
}

.accordion-button:not(.collapsed) {
    background-color: var(--primary-color);
    color: white;
}

.accordion-button:focus {
    box-shadow: 0 0 0 0.25rem rgba(26, 83, 92, 0.25);
}

.accordion-item {
    border: none;
    margin-bottom: 0.5rem;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* ===== OFFCANVAS ===== */
.offcanvas {
    border-radius: var(--border-radius) 0 0 var(--border-radius);
    box-shadow: var(--box-shadow-hover);
}

.offcanvas-header {
    background-color: var(--primary-color);
    color: white;
}

[data-bs-theme="dark"] .offcanvas-header {
    background-color: var(--primary-color);
}

/* ===== MODALS ===== */
.modal-content {
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-hover);
    border: none;
}

.modal-header {
    background-color: var(--primary-color);
    color: white;
    border-bottom: none;
}

[data-bs-theme="dark"] .modal-header {
    background-color: var(--primary-color);
}

/* ===== LIST GROUPS ===== */
.list-group-item {
    border: none;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.list-group-item:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateX(5px);
}

[data-bs-theme="dark"] .list-group-item:hover {
    background-color: var(--secondary-color);
    color: var(--dark-bg);
}

/* ===== FOOTER ===== */
footer {
    margin-top: auto;
}

footer {
    color: var(--text-primary);
}

[data-bs-theme="dark"] footer {
    color: var(--dark-text);
}

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

footer a:hover {
    text-decoration: underline;
    color: var(--secondary-color) !important;
}

[data-bs-theme="dark"] footer a:hover {
    color: var(--secondary-color) !important;
}

/* Estilos para links de navegação no footer */
footer a:not([href*="b20.com.br"]) {
    color: var(--text-secondary);
    transition: var(--transition);
}

footer a:not([href*="b20.com.br"]):hover {
    color: var(--primary-color);
    text-decoration: underline;
}

[data-bs-theme="dark"] footer a:not([href*="b20.com.br"]) {
    color: var(--dark-text-secondary);
}

[data-bs-theme="dark"] footer a:not([href*="b20.com.br"]):hover {
    color: var(--secondary-color);
}

/* Estilo específico para o link de crédito */
footer a[href*="b20.com.br"] {
    color: var(--primary-color) !important;
    font-weight: 500;
    transition: var(--transition);
}

footer a[href*="b20.com.br"]:hover {
    color: var(--secondary-color) !important;
    text-decoration: underline;
}

[data-bs-theme="dark"] footer a[href*="b20.com.br"] {
    color: var(--secondary-color) !important;
}

[data-bs-theme="dark"] footer a[href*="b20.com.br"]:hover {
    color: #6ed9d1 !important;
}

/* Melhorar legibilidade de links gerais */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

[data-bs-theme="dark"] a {
    color: var(--secondary-color);
}

[data-bs-theme="dark"] a:hover {
    color: #6ed9d1;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .display-3 {
        font-size: 2.5rem;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .lead {
        font-size: 1rem;
    }
    
    #bodyFatChart {
        height: 250px;
    }
    
    .chart-container {
        height: 250px;
    }
    
    /* Formulário responsivo para tablets */
    .input-group-lg .form-control {
        font-size: 1.125rem;
    }
    
    .input-group-lg .input-group-text {
        font-size: 1rem;
    }
}

@media (max-width: 576px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .card-body {
        padding: 1rem !important;
    }
    
    /* Formulário responsivo para mobile */
    .input-group-lg .form-control {
        font-size: 16px;
    }
    
    .input-group-lg .input-group-text {
        font-size: 0.9rem;
        min-width: 50px;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
    }
    
    #bodyFatChart {
        height: 200px;
    }
    
    .chart-container {
        height: 200px;
    }
}

/* Telas muito pequenas (menos de 400px) */
@media (max-width: 400px) {
    .container {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }
    
    .card-body {
        padding: 0.75rem !important;
    }
    
    /* Formulário ultra-compacto */
    .input-group-lg .form-control {
        font-size: 16px;
        padding: 0.75rem 0.875rem;
    }
    
    .input-group-lg .input-group-text {
        font-size: 0.85rem;
        padding: 0.75rem 0.875rem;
        min-width: 45px;
    }
    
    .btn-lg {
        padding: 0.75rem 1.25rem;
        font-size: 0.95rem;
    }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Melhorar contraste para acessibilidade */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #000000;
        --text-secondary: #333333;
        --text-muted: #666666;
        --dark-text: #ffffff;
        --dark-text-secondary: #e0e0e0;
        --dark-text-muted: #b0b0b0;
    }
    
    .btn-outline-primary {
        border-width: 3px;
    }
    
    .form-control {
        border-width: 3px;
    }
}

/* Focus indicators */
.btn:focus,
.form-control:focus,
.accordion-button:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .card {
        border: 2px solid #000;
    }
    
    .btn {
        border-width: 2px;
    }
    
    .form-control {
        border-width: 2px;
    }
}

/* ===== LOADING STATES ===== */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== VALIDATION STYLES ===== */
.was-validated .form-control:valid {
    border-color: var(--secondary-color);
}

.was-validated .form-control:invalid {
    border-color: var(--accent-color);
}

.invalid-feedback {
    color: var(--accent-color);
    font-weight: 500;
}

.valid-feedback {
    color: var(--secondary-color);
    font-weight: 500;
}

[data-bs-theme="dark"] .invalid-feedback {
    color: #ff7b7b;
}

[data-bs-theme="dark"] .valid-feedback {
    color: #4ecdc4;
}

/* ===== SHARE BUTTONS ===== */
.btn-group .btn {
    border-radius: 0;
}

.btn-group .btn:first-child {
    border-top-left-radius: 6px;
    border-bottom-left-radius: 6px;
}

.btn-group .btn:last-child {
    border-top-right-radius: 6px;
    border-bottom-right-radius: 6px;
}

.btn-group .btn:not(:last-child) {
    border-right: 1px solid rgba(0,0,0,0.1);
}

[data-bs-theme="dark"] .btn-group .btn:not(:last-child) {
    border-right: 1px solid rgba(255,255,255,0.1);
}

/* ===== UTILITY CLASSES ===== */
.text-shadow {
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.border-rounded {
    border-radius: var(--border-radius);
}

.shadow-custom {
    box-shadow: var(--box-shadow);
}

.shadow-hover {
    transition: var(--transition);
}

.shadow-hover:hover {
    box-shadow: var(--box-shadow-hover);
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color), #2a6f7a);
}

.bg-gradient-secondary {
    background: linear-gradient(135deg, var(--secondary-color), #6ed9d1);
}

/* ===== PRINT STYLES ===== */
@media print {
    .navbar,
    .offcanvas,
    .modal,
    .btn {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #000;
    }
    
    body {
        background-color: white !important;
        color: black !important;
    }
}