/* Calculadora de Aquasoil - CSS Modular */
/* Paleta: Azul celeste (#4FC3F7) e Verde (#4CAF50) do Aquarismo Sereno */

:root {
    /* Cores principais */
    --primary-blue: #4FC3F7;
    --primary-green: #4CAF50;
    --primary-green-hover: #45a049;
    
    /* Cores de fundo */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-card: #ffffff;
    --bg-overlay: rgba(0, 0, 0, 0.5);
    
    /* Cores de texto */
    --text-primary: #2d3a4a;
    --text-secondary: #6c757d;
    --text-muted: #9ca3af;
    
    /* Cores de estado */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    /* Cores de borda */
    --border-light: #e5e7eb;
    --border-medium: #d1d5db;
    --border-focus: var(--primary-blue);
    
    /* Sombras */
    --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);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transições */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Espaçamentos */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Tipografia */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --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;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;
}

/* Tema escuro */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1f2937;
        --bg-secondary: #111827;
        --bg-card: #374151;
        --text-primary: #f9fafb;
        --text-secondary: #d1d5db;
        --text-muted: #9ca3af;
        --border-light: #4b5563;
        --border-medium: #6b7280;
    }
}

/* 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(--primary-blue), var(--primary-green));
    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(--primary-blue), var(--primary-green));
    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(79, 195, 247, 0.1);
}

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

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

/* 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(--primary-green);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-green-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-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    min-height: 36px;
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: var(--font-size-lg);
    min-height: 52px;
}

.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: 0.3s;
}

@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-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

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

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

.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);
}

/* Ações rápidas */
.quick-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
    opacity: 0;
    animation: quickActionsFadeIn 0.5s ease-out forwards;
    animation-delay: 0.6s;
}

@keyframes quickActionsFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.quick-actions .btn {
    min-width: 120px;
}

/* Toast notifications */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-toast);
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    max-width: 300px;
}

.toast.show {
    transform: translateX(0);
}

.toast-success {
    border-left: 4px solid var(--success);
}

.toast-error {
    border-left: 4px solid var(--error);
}

.toast-warning {
    border-left: 4px solid var(--warning);
}

/* 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;
    }
    
    .quick-actions {
        flex-direction: column;
    }
    
    .quick-actions .btn {
        min-width: auto;
    }
    
    .toast {
        right: var(--spacing-md);
        left: var(--spacing-md);
        transform: translateY(-100%);
    }
    
    .toast.show {
        transform: translateY(0);
    }
}

@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 {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* Alto contraste */
@media (prefers-contrast: high) {
    :root {
        --border-light: #000000;
        --border-medium: #000000;
        --text-muted: #000000;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}

/* Impressão */
@media print {
    .calculadora-container {
        box-shadow: none;
        border: 1px solid #000;
    }
    
    .btn-container,
    .quick-actions {
        display: none;
    }
    
    .calculadora-form,
    .result-card {
        break-inside: avoid;
    }
}

/* ========================================
   TOOLTIPS INFORMATIVOS
   ======================================== */

.tooltip-trigger {
    display: inline-block;
    width: 18px;
    height: 18px;
    line-height: 18px;
    text-align: center;
    background: var(--primary-blue);
    color: white;
    border-radius: 50%;
    font-size: 12px;
    font-weight: bold;
    cursor: help;
    margin-left: 8px;
    transition: all 0.3s ease;
    vertical-align: middle;
    /* Melhorar para touch */
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.tooltip-trigger:hover {
    background: var(--primary-green);
    transform: scale(1.1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* Indicador visual para mobile */
@media (hover: none) and (pointer: coarse) {
    .tooltip-trigger::after {
        content: '👆';
        position: absolute;
        top: -20px;
        left: 50%;
        transform: translateX(-50%);
        font-size: 14px;
        opacity: 0;
        transition: opacity 0.3s ease;
        pointer-events: none;
    }
    
    .tooltip-trigger:active::after {
        opacity: 1;
    }
}

.tooltip {
    position: fixed;
    z-index: 1000;
    max-width: 320px;
    background: white;
    border: 2px solid var(--primary-blue);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    padding: 0;
    font-size: 14px;
    line-height: 1.5;
    pointer-events: none;
    opacity: 0;
    transform: translateY(-10px) scale(0.95);
    transition: all 0.2s ease;
    /* Posição será definida via JavaScript */
    left: 0;
    top: 0;
}

.tooltip.show {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.tooltip-content {
    padding: 16px;
}

.tooltip-content h4 {
    margin: 0 0 12px 0;
    color: var(--primary-blue);
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tooltip-content p {
    margin: 0 0 8px 0;
    color: var(--text-primary);
}

.tooltip-content p:last-child {
    margin-bottom: 0;
}

.tooltip-content strong {
    color: var(--primary-green);
    font-weight: 600;
}

/* Responsividade dos tooltips */
@media (max-width: 768px) {
    .tooltip {
        max-width: 280px;
        font-size: 13px;
        /* Melhorar para mobile */
        pointer-events: auto;
        border-width: 3px;
    }
    
    .tooltip-content {
        padding: 14px;
    }
    
    .tooltip-content h4 {
        font-size: 15px;
    }
    
    /* Melhorar espaçamento para mobile */
    .tooltip-content h4 {
        padding-right: 30px;
    }
}

/* Melhorias específicas para dispositivos touch */
@media (hover: none) and (pointer: coarse) {
    .tooltip-trigger {
        /* Aumentar área de toque */
        min-width: 44px;
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .tooltip-trigger::before {
        content: 'ⓘ';
        font-size: 16px;
    }
    
    /* Adicionar feedback visual para toque */
    .tooltip-trigger:active {
        background: var(--primary-green);
        transform: scale(0.95);
    }
    
    /* Tooltip mais robusto para mobile */
    .tooltip {
        border-width: 3px;
        box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    }
}

/* ========================================
   MELHORIAS NO FORMULÁRIO
   ======================================== */

.form-label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-help {
    margin-top: 6px;
    font-size: 13px;
    color: var(--text-muted);
    font-style: italic;
}