/* Calculadora CO2 Bicarbonato e Ácido Cítrico - CSS modular (base: calculadora-aquasoil) */
/* Paleta: Teal/Ciano (#0d9488, #14b8a6) - tema CO2 */

:root {
    --co2-primary: #0d9488;
    --co2-primary-hover: #0f766e;
    --co2-accent: #14b8a6;

    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-light: #e2e8f0;
    --border-medium: #cbd5e1;
    --border-focus: var(--co2-primary);
    --success: #059669;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1e293b;
        --bg-secondary: #0f172a;
        --bg-card: #334155;
        --text-primary: #f1f5f9;
        --text-secondary: #cbd5e1;
        --text-muted: #94a3b8;
        --border-light: #475569;
        --border-medium: #64748b;
    }
}

/* Container principal */
.calculadora-container {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    position: relative;
}

.calculadora-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--co2-primary), var(--co2-accent));
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

/* Cabeçalho */
.calculadora-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.calculadora-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--co2-primary), var(--co2-accent));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-2xl);
    box-shadow: var(--shadow-md);
}

.calculadora-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.calculadora-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Formulário */
.calculadora-form {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-base);
}

.form-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
    background: var(--bg-primary);
    color: var(--text-primary);
}

.form-input:focus,
.form-input:focus-visible {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-input.error {
    border-color: #ef4444;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}

.form-help {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
    font-style: italic;
}

.form-select {
    cursor: pointer;
    appearance: auto;
}

/* Área preset: select ou mensagem de valores customizados */
.preset-area {
    position: relative;
}

.preset-select-wrap {
    transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.preset-select-wrap.hidden {
    display: none !important;
}

.preset-custom-msg {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(13, 148, 136, 0.06) 0%, rgba(20, 184, 166, 0.04) 100%);
    border: 1px solid rgba(13, 148, 136, 0.2);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--co2-primary);
    animation: presetMsgFadeIn 0.35s ease-out;
}

@keyframes presetMsgFadeIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.preset-custom-msg-icon {
    font-size: 1.5rem;
    line-height: 1;
    flex-shrink: 0;
}

.preset-custom-msg-content {
    flex: 1;
    min-width: 0;
}

.preset-custom-msg-title {
    display: block;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.preset-custom-msg-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* Radio group (específico CO2) */
.radio-group {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.radio-option {
    flex: 1;
    min-width: 140px;
    cursor: pointer;
    display: block;
}

.radio-option input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.radio-label {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: center;
    background: var(--bg-secondary);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    font-weight: 500;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.radio-option:hover .radio-label {
    border-color: var(--co2-accent);
    background: rgba(20, 184, 166, 0.08);
}

.radio-option input:checked+.radio-label {
    border-color: var(--co2-primary);
    background: rgba(13, 148, 136, 0.12);
    color: var(--co2-primary);
    font-weight: 600;
}

/* Botões */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 44px;
    gap: var(--spacing-sm);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--co2-primary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--co2-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--border-light);
}

.btn-container {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-xl);
    opacity: 0;
    animation: btnFadeIn 0.5s ease-out forwards;
    animation-delay: 0.2s;
}

@keyframes btnFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Resultado */
.result-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    display: none;
}

.result-card.show {
    display: block;
    animation: resultFadeIn 0.5s ease-out;
}

@keyframes resultFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.result-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--success);
    margin-bottom: var(--spacing-sm);
}

.result-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

.result-summary {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

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

.summary-item .summary-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
    text-transform: none;
    letter-spacing: 0;
}

.summary-item .summary-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    display: inline;
}

.summary-item .summary-value+.summary-unit {
    margin-left: var(--spacing-xs);
}

.summary-item-highlight .summary-value {
    color: var(--co2-primary);
}

.summary-unit {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* Info section */
.info-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: 0;
}

.info-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.info-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.info-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
    line-height: 1.6;
}

.info-list li:last-child {
    border-bottom: none;
}

.info-list li::before {
    content: '💨 ';
    margin-right: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

/* Responsividade */
@media (max-width: 768px) {
    .calculadora-container {
        margin: var(--spacing-md);
        padding: var(--spacing-md);
    }

    .calculadora-title {
        font-size: var(--font-size-2xl);
    }

    .calculadora-subtitle {
        font-size: var(--font-size-base);
    }

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

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

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

    .radio-option {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .calculadora-container {
        margin: var(--spacing-sm);
        padding: var(--spacing-sm);
    }

    .calculadora-form,
    .result-card,
    .info-section {
        padding: var(--spacing-md);
    }

    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
}

/* Acessibilidade */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.btn:focus-visible,
.form-input:focus-visible,
.radio-option input:focus-visible+.radio-label {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* Impressão */
@media print {
    .calculadora-container {
        box-shadow: none;
        border: 1px solid #000;
    }

    .btn-container {
        display: none;
    }

    .calculadora-form,
    .result-card {
        break-inside: avoid;
    }
}

/* Padrão de mensagens (Fundo Azul Claro + Texto Escuro) */
.message-blue-box {
    background-color: #eff6ff;
    /* blue-50 */
    border: 1px solid #dbeafe;
    /* blue-100 */
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

.message-blue-box h3 {
    color: var(--text-primary);
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid #bfdbfe;
    /* blue-200 */
    padding-bottom: var(--spacing-sm);
}

.message-blue-box .note-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--spacing-md);
    line-height: 1.5;
}

/* Ajuste de contraste para items internos */
.message-blue-box strong {
    color: var(--text-primary);
}

/* Cores de duração ajustadas para fundo claro */
.dur-val-green {
    color: #16a34a;
    font-weight: 700;
    font-size: 1.2rem;
}

.dur-val-yellow {
    color: #d97706;
    font-weight: 700;
    font-size: 1.2rem;
}

.dur-val-red {
    color: #dc2626;
    font-weight: 700;
    font-size: 1.2rem;
}