/* pH Simple Calculator - CSS Compartilhado */
/* Reutiliza as mesmas CSS custom properties dos wizards existentes */

/* Herda :root vars do ajuste-ph-wizard.css (--primary-blue, --primary-orange, etc.) */

.ph-calc {
    max-width: 640px;
    margin: 0 auto;
    padding: var(--spacing-lg, 1.5rem);
    font-family: var(--font-family, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
}

/* ─── Product Selector ─────────────────────────────────────────── */

.ph-calc__selector {
    display: flex;
    gap: 0.5rem;
    margin-bottom: var(--spacing-lg, 1.5rem);
    flex-wrap: wrap;
}

.ph-calc__selector-btn {
    flex: 1;
    min-width: 140px;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-light, #e5e7eb);
    border-radius: var(--radius-lg, 0.75rem);
    background: var(--bg-card, #fff);
    color: var(--text-primary, #2d3a4a);
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast, 0.15s);
    text-align: center;
    line-height: 1.3;
}

.ph-calc__selector-btn:hover {
    border-color: var(--primary-blue, #4FC3F7);
    background: rgba(79, 195, 247, 0.05);
}

.ph-calc__selector-btn--active {
    border-color: var(--primary-blue, #4FC3F7);
    background: linear-gradient(135deg, rgba(79, 195, 247, 0.1), rgba(79, 195, 247, 0.05));
    color: var(--primary-blue, #4FC3F7);
    box-shadow: 0 0 0 1px var(--primary-blue, #4FC3F7);
}

.ph-calc__selector-icon {
    display: block;
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.ph-calc__selector-label {
    display: block;
    font-size: var(--font-size-xs, 0.75rem);
    color: var(--text-secondary, #6c757d);
    margin-top: 0.15rem;
    font-weight: 400;
}

/* ─── Product Info Card ────────────────────────────────────────── */

.ph-calc__info {
    background: linear-gradient(135deg, #f0f9ff, #e8f5e9);
    border: 1px solid var(--border-light, #e5e7eb);
    border-radius: var(--radius-lg, 0.75rem);
    padding: var(--spacing-md, 1rem);
    margin-bottom: var(--spacing-lg, 1.5rem);
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--text-secondary, #6c757d);
    line-height: 1.5;
}

.ph-calc__info-title {
    font-weight: 700;
    color: var(--text-primary, #2d3a4a);
    margin-bottom: 0.25rem;
    font-size: var(--font-size-base, 1rem);
}

.ph-calc__info-species {
    font-style: italic;
    color: var(--text-muted, #9ca3af);
}

/* ─── Form ─────────────────────────────────────────────────────── */

.ph-calc__form {
    background: var(--bg-card, #fff);
    border: 1px solid var(--border-light, #e5e7eb);
    border-radius: var(--radius-xl, 1rem);
    padding: var(--spacing-xl, 2rem);
    box-shadow: var(--shadow-md, 0 4px 6px -1px rgba(0,0,0,0.1));
}

.ph-calc__field {
    margin-bottom: var(--spacing-lg, 1.5rem);
}

.ph-calc__label {
    display: block;
    font-weight: 600;
    color: var(--text-primary, #2d3a4a);
    margin-bottom: 0.375rem;
    font-size: var(--font-size-sm, 0.875rem);
}

.ph-calc__label-hint {
    font-weight: 400;
    color: var(--text-muted, #9ca3af);
    font-size: var(--font-size-xs, 0.75rem);
}

.ph-calc__input {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 2px solid var(--border-light, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
    font-size: var(--font-size-base, 1rem);
    color: var(--text-primary, #2d3a4a);
    background: var(--bg-primary, #fff);
    transition: border-color var(--transition-fast, 0.15s);
    box-sizing: border-box;
}

.ph-calc__input:focus {
    outline: none;
    border-color: var(--primary-blue, #4FC3F7);
    box-shadow: 0 0 0 3px rgba(79, 195, 247, 0.15);
}

.ph-calc__input--error {
    border-color: var(--error, #ef4444);
}

.ph-calc__error-msg {
    color: var(--error, #ef4444);
    font-size: var(--font-size-xs, 0.75rem);
    margin-top: 0.25rem;
    display: none;
}

.ph-calc__error-msg--visible {
    display: block;
}

.ph-calc__submit {
    width: 100%;
    padding: 0.875rem;
    background: linear-gradient(135deg, var(--primary-orange, #FF9800), #f57c00);
    color: #fff;
    border: none;
    border-radius: var(--radius-lg, 0.75rem);
    font-size: var(--font-size-lg, 1.125rem);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast, 0.15s);
    box-shadow: var(--shadow-md);
}

.ph-calc__submit:hover {
    background: linear-gradient(135deg, #f57c00, #e65100);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.ph-calc__submit:active {
    transform: translateY(0);
}

.ph-calc__submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ─── Result ───────────────────────────────────────────────────── */

.ph-calc__result {
    display: none;
    margin-top: var(--spacing-xl, 2rem);
    animation: phCalcFadeIn 0.4s ease-out;
}

.ph-calc__result--visible {
    display: block;
}

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

.ph-calc__result-card {
    background: var(--bg-card, #fff);
    border: 2px solid var(--success, #10b981);
    border-radius: var(--radius-xl, 1rem);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.ph-calc__result-header {
    background: linear-gradient(135deg, var(--success, #10b981), #059669);
    color: #fff;
    padding: var(--spacing-md, 1rem) var(--spacing-lg, 1.5rem);
}

.ph-calc__result-title {
    font-size: var(--font-size-lg, 1.125rem);
    font-weight: 700;
    margin: 0;
}

.ph-calc__result-subtitle {
    font-size: var(--font-size-sm, 0.875rem);
    opacity: 0.9;
    margin-top: 0.15rem;
}

.ph-calc__result-body {
    padding: var(--spacing-lg, 1.5rem);
}

.ph-calc__dose-highlight {
    text-align: center;
    padding: var(--spacing-lg, 1.5rem);
    background: linear-gradient(135deg, rgba(79, 195, 247, 0.08), rgba(16, 185, 129, 0.08));
    border-radius: var(--radius-lg, 0.75rem);
    margin-bottom: var(--spacing-md, 1rem);
}

.ph-calc__dose-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-blue, #4FC3F7);
    line-height: 1;
}

.ph-calc__dose-unit {
    font-size: var(--font-size-lg, 1.125rem);
    color: var(--text-secondary, #6c757d);
    font-weight: 600;
    margin-top: 0.25rem;
}

.ph-calc__dose-detail {
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--text-muted, #9ca3af);
    margin-top: 0.5rem;
}

/* ─── Safety Banner (KH dose adjustment) ──────────────────────── */

.ph-calc__safety-banner {
    padding: 0.75rem 1rem;
    background: linear-gradient(135deg, #fff3e0, #fce4ec);
    border: 1px solid #ffcc80;
    border-left: 4px solid #ff9800;
    border-radius: var(--radius-md, 0.5rem);
    margin-bottom: var(--spacing-md, 1rem);
    font-size: var(--font-size-sm, 0.875rem);
    line-height: 1.5;
}

.ph-calc__safety-banner-title {
    font-weight: 700;
    color: #e65100;
    margin-bottom: 0.25rem;
    font-size: var(--font-size-sm, 0.875rem);
}

.ph-calc__safety-banner-detail {
    color: #bf360c;
}

.ph-calc__safety-banner-pct {
    font-weight: 700;
    color: #d84315;
}

/* ─── Stop Triggers (multi-session decision rules) ────────────── */

.ph-calc__stop-triggers {
    padding: 0.75rem 1rem;
    background: linear-gradient(135deg, #e8f5e9, #fff3e0);
    border: 1px solid #a5d6a7;
    border-left: 4px solid #43a047;
    border-radius: var(--radius-md, 0.5rem);
    margin-bottom: var(--spacing-md, 1rem);
    font-size: var(--font-size-sm, 0.875rem);
    line-height: 1.5;
}

.ph-calc__stop-triggers-title {
    font-weight: 700;
    color: #2e7d32;
    margin-bottom: 0.5rem;
    font-size: var(--font-size-sm, 0.875rem);
}

.ph-calc__stop-triggers-list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.ph-calc__stop-trigger {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.35rem 0.5rem;
    border-radius: 0.25rem;
}

.ph-calc__stop-trigger--stop {
    background: rgba(211, 47, 47, 0.08);
}

.ph-calc__stop-trigger--half {
    background: rgba(245, 124, 0, 0.08);
}

.ph-calc__stop-trigger--full {
    background: rgba(56, 142, 60, 0.08);
}

.ph-calc__stop-trigger-icon {
    flex-shrink: 0;
    font-size: 1rem;
    line-height: 1.3;
}

.ph-calc__stop-trigger-condition {
    font-weight: 600;
    color: #333;
}

.ph-calc__stop-trigger-action {
    color: #555;
    font-size: 0.8rem;
}

/* ─── Protocol Steps (gradual) ─────────────────────────────────── */

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

.ph-calc__step {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.625rem 0;
    border-bottom: 1px solid var(--border-light, #e5e7eb);
}

.ph-calc__step:last-child {
    border-bottom: none;
}

.ph-calc__step-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
    width: 2rem;
    text-align: center;
}

.ph-calc__step-text {
    font-size: var(--font-size-sm, 0.875rem);
    color: var(--text-primary, #2d3a4a);
    line-height: 1.5;
}

/* ─── Warnings & Info Boxes ────────────────────────────────────── */

.ph-calc__warnings {
    margin-top: var(--spacing-md, 1rem);
}

.ph-calc__warning {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.625rem 0.875rem;
    background: #fff3e0;
    border: 1px solid #ffe0b2;
    border-radius: var(--radius-md, 0.5rem);
    margin-bottom: 0.5rem;
    font-size: var(--font-size-sm, 0.875rem);
    color: #e65100;
    line-height: 1.4;
}

.ph-calc__warning--danger {
    background: #fce4ec;
    border-color: #ef9a9a;
    color: #c62828;
}

.ph-calc__warning--info {
    background: #e3f2fd;
    border-color: #90caf9;
    color: #1565c0;
}

.ph-calc__warning-icon {
    flex-shrink: 0;
}

.ph-calc__protocol-box {
    margin-top: var(--spacing-md, 1rem);
    padding: var(--spacing-md, 1rem);
    background: #e8f5e9;
    border: 1px solid #c8e6c9;
    border-radius: var(--radius-md, 0.5rem);
    font-size: var(--font-size-sm, 0.875rem);
    color: #2e7d32;
    line-height: 1.5;
}

.ph-calc__protocol-box strong {
    display: block;
    margin-bottom: 0.25rem;
}

.ph-calc__species-box {
    margin-top: var(--spacing-md, 1rem);
    padding: 0.625rem 0.875rem;
    background: #e3f2fd;
    border: 1px solid #bbdefb;
    border-radius: var(--radius-md, 0.5rem);
    font-size: var(--font-size-sm, 0.875rem);
    color: #1565c0;
}

/* ─── Actions ──────────────────────────────────────────────────── */

.ph-calc__actions {
    display: flex;
    gap: 0.5rem;
    margin-top: var(--spacing-lg, 1.5rem);
    flex-wrap: wrap;
}

.ph-calc__action-btn {
    flex: 1;
    min-width: 120px;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-medium, #d1d5db);
    border-radius: var(--radius-md, 0.5rem);
    background: var(--bg-card, #fff);
    color: var(--text-secondary, #6c757d);
    font-size: var(--font-size-sm, 0.875rem);
    cursor: pointer;
    transition: all var(--transition-fast, 0.15s);
    text-align: center;
}

.ph-calc__action-btn:hover {
    background: var(--bg-secondary, #f8f9fa);
    border-color: var(--primary-blue, #4FC3F7);
    color: var(--primary-blue, #4FC3F7);
}

/* ─── Loading ──────────────────────────────────────────────────── */

.ph-calc__loading {
    display: none;
    text-align: center;
    padding: var(--spacing-xl, 2rem);
}

.ph-calc__loading--visible {
    display: block;
}

.ph-calc__spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-light, #e5e7eb);
    border-top-color: var(--primary-blue, #4FC3F7);
    border-radius: 50%;
    animation: phCalcSpin 0.8s linear infinite;
    margin: 0 auto var(--spacing-sm, 0.5rem);
}

@keyframes phCalcSpin {
    to { transform: rotate(360deg); }
}

/* ─── Dark Mode ────────────────────────────────────────────────── */

@media (prefers-color-scheme: dark) {
    .ph-calc__info {
        background: linear-gradient(135deg, #1a2332, #1a2e1a);
        border-color: var(--border-light);
    }

    .ph-calc__warning {
        background: #3e2723;
        border-color: #5d4037;
        color: #ffcc80;
    }

    .ph-calc__warning--danger {
        background: #3b1212;
        border-color: #5c2020;
        color: #ef9a9a;
    }

    .ph-calc__warning--info {
        background: #0d2137;
        border-color: #1a3a5c;
        color: #90caf9;
    }

    .ph-calc__protocol-box {
        background: #1b3a1b;
        border-color: #2e5d2e;
        color: #a5d6a7;
    }

    .ph-calc__species-box {
        background: #0d2137;
        border-color: #1a3a5c;
        color: #90caf9;
    }

    .ph-calc__dose-highlight {
        background: linear-gradient(135deg, rgba(79, 195, 247, 0.12), rgba(16, 185, 129, 0.12));
    }

    .ph-calc__safety-banner {
        background: linear-gradient(135deg, #3e2723, #3b1212);
        border-color: #5d4037;
        border-left-color: #ff9800;
    }

    .ph-calc__safety-banner-title {
        color: #ffcc80;
    }

    .ph-calc__safety-banner-detail {
        color: #ffab91;
    }

    .ph-calc__safety-banner-pct {
        color: #ff8a65;
    }

    .ph-calc__stop-triggers {
        background: linear-gradient(135deg, #1b3a1b, #3e2723);
        border-color: #2e5d2e;
        border-left-color: #43a047;
    }

    .ph-calc__stop-triggers-title {
        color: #81c784;
    }

    .ph-calc__stop-trigger--stop {
        background: rgba(239, 154, 154, 0.1);
    }

    .ph-calc__stop-trigger--half {
        background: rgba(255, 183, 77, 0.1);
    }

    .ph-calc__stop-trigger--full {
        background: rgba(129, 199, 132, 0.1);
    }

    .ph-calc__stop-trigger-condition {
        color: #e0e0e0;
    }

    .ph-calc__stop-trigger-action {
        color: #bdbdbd;
    }
}

/* ─── Responsive ───────────────────────────────────────────────── */

@media (max-width: 480px) {
    .ph-calc {
        padding: var(--spacing-md, 1rem);
    }

    .ph-calc__form {
        padding: var(--spacing-md, 1rem);
    }

    .ph-calc__selector-btn {
        min-width: 100px;
        padding: 0.5rem 0.75rem;
        font-size: var(--font-size-xs, 0.75rem);
    }

    .ph-calc__dose-value {
        font-size: 2rem;
    }
}

/* =============================================
   ACCORDION — Protocol details colapsável
   ============================================= */

.ph-calc__accordion-section {
    border: 1px solid var(--border-light, #e5e7eb);
    border-radius: var(--radius-md, 0.5rem);
    margin-top: var(--spacing-md, 1rem);
    overflow: hidden;
}

.ph-calc__accordion-toggle {
    width: 100%;
    background: var(--bg-secondary, #f9fafb);
    border: none;
    padding: var(--spacing-md, 1rem) var(--spacing-lg, 1.5rem);
    text-align: left;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text-primary, #111827);
    font-size: var(--font-size-sm, 0.875rem);
    font-weight: 500;
    transition: background 0.15s ease;
    gap: var(--spacing-sm, 0.5rem);
}

.ph-calc__accordion-toggle:hover {
    background: var(--border-light, #e5e7eb);
}

.ph-calc__accordion-toggle::after {
    content: '\25BC';
    transition: transform 0.2s ease;
    color: var(--primary-blue, #3b82f6);
    flex-shrink: 0;
    font-size: var(--font-size-xs, 0.75rem);
}

.ph-calc__accordion-toggle.expanded::after {
    transform: rotate(180deg);
}

.ph-calc__accordion-count {
    font-size: var(--font-size-xs, 0.75rem);
    color: var(--text-secondary, #6b7280);
    font-weight: 400;
}

.ph-calc__accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: var(--bg-card, #ffffff);
}

.ph-calc__accordion-content.expanded {
    max-height: 600px;
    padding: var(--spacing-md, 1rem) var(--spacing-lg, 1.5rem);
}