/* ============================================
   PumpHeadPowerCalculator.css
   泵浦揚程與馬力計算器 - Calculator-specific styles only

   NOTE: DO NOT redefine global classes from layout.css:
   - .glass-card, .form-input, .btn-custom, .btn-sponsor, etc.
   ============================================ */

/* Template Buttons Grid */
.template-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.template-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 15px 10px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.template-btn:hover {
    border-color: #667eea;
    background: linear-gradient(135deg, #ebf4ff 0%, #e9d8fd 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.template-btn:active {
    transform: translateY(0);
}

.template-btn i {
    font-size: 1.8rem;
    color: #667eea;
    margin-bottom: 8px;
}

.template-btn span {
    font-size: 0.95rem;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 4px;
}

.template-btn small {
    font-size: 0.75rem;
    color: #718096;
}

/* Input Layout */
.input-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 15px;
}

.input-group-custom {
    display: flex;
    flex-direction: column;
}

.input-label {
    font-size: 0.9rem;
    color: #4a5568;
    margin-bottom: 6px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
}

.input-label i {
    color: #667eea;
}

.input-wrapper {
    position: relative;
}

.input-range {
    font-size: 0.75rem;
    color: #a0aec0;
    margin-top: 4px;
}

/* Tooltip */
.tooltip-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #e2e8f0;
    color: #718096;
    font-size: 0.7rem;
    cursor: help;
    position: relative;
    margin-left: 3px;
}

.tooltip-icon .tooltip-text {
    visibility: hidden;
    width: 200px;
    background-color: #2d3748;
    color: #fff;
    text-align: left;
    border-radius: 8px;
    padding: 10px;
    position: absolute;
    z-index: 100;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.8rem;
    font-weight: normal;
    line-height: 1.4;
}

.tooltip-icon .tooltip-text::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #2d3748 transparent transparent transparent;
}

.tooltip-icon:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* Result Card */
.result-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    color: white;
}

.result-card .card-title {
    color: white !important;
}

.result-main {
    text-align: center;
    padding: 20px 0;
}

.result-label {
    font-size: 0.95rem;
    opacity: 0.9;
    margin-bottom: 5px;
}

.result-value {
    font-size: 2.8rem;
    font-weight: 700;
    font-family: 'Roboto Mono', monospace;
    line-height: 1.2;
}

.result-divider {
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
    margin: 15px 0;
}

/* Result Details */
.result-details {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 15px;
    margin-top: 15px;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.result-item:last-child {
    border-bottom: none;
}

.result-item-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

.result-item-value {
    font-size: 1rem;
    font-weight: 600;
    font-family: 'Roboto Mono', monospace;
}

/* Warning/Info Boxes */
.warning-box {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15) 0%, rgba(249, 115, 22, 0.15) 100%);
    border-left: 4px solid #f59e0b;
    padding: 12px 15px;
    border-radius: 8px;
    margin-top: 15px;
    display: none;
}

.warning-box.show {
    display: block;
}

.warning-box i {
    color: #f59e0b;
    margin-right: 8px;
}

.warning-box span {
    color: #92400e;
    font-size: 0.9rem;
}

.info-box {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(99, 102, 241, 0.1) 100%);
    border-left: 4px solid #3b82f6;
    padding: 12px 15px;
    border-radius: 8px;
    margin-top: 15px;
}

.info-box i {
    color: #3b82f6;
    margin-right: 8px;
}

.info-box span {
    color: #1e40af;
    font-size: 0.9rem;
}

/* Motor Specification */
.motor-spec {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(5, 150, 105, 0.15) 100%);
    border-radius: 12px;
    padding: 20px;
    margin-top: 15px;
    text-align: center;
}

.motor-spec-label {
    font-size: 0.9rem;
    color: #065f46;
    margin-bottom: 8px;
}

.motor-spec-value {
    font-size: 2rem;
    font-weight: 700;
    color: #059669;
    font-family: 'Roboto Mono', monospace;
}

.motor-spec-note {
    font-size: 0.8rem;
    color: #047857;
    margin-top: 8px;
}

/* Chart Container */
.chart-container {
    position: relative;
    height: 280px;
    margin-top: 10px;
}

/* Pipe Diagram (SVG) */
.pipe-diagram {
    width: 100%;
    max-width: 400px;
    margin: 15px auto;
    display: block;
}

/* Fittings Section */
.fittings-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.fitting-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: #f7fafc;
    border-radius: 8px;
}

.fitting-item i {
    color: #667eea;
    font-size: 1.1rem;
}

.fitting-item label {
    flex: 1;
    font-size: 0.85rem;
    color: #4a5568;
}

.fitting-item input {
    width: 60px;
    text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
    .template-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .template-btn {
        padding: 12px 8px;
    }

    .template-btn i {
        font-size: 1.5rem;
    }

    .template-btn span {
        font-size: 0.85rem;
    }

    .template-btn small {
        font-size: 0.7rem;
    }

    .input-row {
        grid-template-columns: 1fr;
    }

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

    .result-value {
        font-size: 2.2rem;
    }

    .motor-spec-value {
        font-size: 1.6rem;
    }

    .tooltip-icon .tooltip-text {
        width: 160px;
        left: auto;
        right: -10px;
        transform: none;
    }

    .tooltip-icon .tooltip-text::after {
        left: auto;
        right: 15px;
    }
}

/* Calculation Steps */
.calculation-steps {
    background: #f7fafc;
    border-radius: 12px;
    padding: 15px;
    margin-top: 15px;
}

.calculation-step {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px solid #e2e8f0;
}

.calculation-step:last-child {
    border-bottom: none;
}

.step-number {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: 0.8rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-label {
    font-size: 0.85rem;
    color: #718096;
    margin-bottom: 2px;
}

.step-value {
    font-size: 1rem;
    font-weight: 600;
    color: #2d3748;
    font-family: 'Roboto Mono', monospace;
}

/* Unit Toggle */
.unit-toggle {
    display: inline-flex;
    background: #e2e8f0;
    border-radius: 8px;
    padding: 3px;
    margin-left: 10px;
}

.unit-toggle button {
    padding: 4px 12px;
    border: none;
    background: transparent;
    border-radius: 6px;
    font-size: 0.8rem;
    color: #718096;
    cursor: pointer;
    transition: all 0.2s;
}

.unit-toggle button.active {
    background: white;
    color: #667eea;
    font-weight: 600;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Summary Table */
.summary-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

.summary-table th,
.summary-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.summary-table th {
    background: #f7fafc;
    font-weight: 600;
    color: #4a5568;
    font-size: 0.85rem;
}

.summary-table td {
    font-size: 0.9rem;
    color: #2d3748;
}

.summary-table tr:last-child td {
    border-bottom: none;
}

/* Flow Velocity Indicator */
.velocity-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 10px;
}

.velocity-bar {
    flex: 1;
    height: 8px;
    background: #e2e8f0;
    border-radius: 4px;
    overflow: hidden;
}

.velocity-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.3s, background 0.3s;
}

.velocity-fill.safe {
    background: linear-gradient(90deg, #48bb78, #38a169);
}

.velocity-fill.warning {
    background: linear-gradient(90deg, #f6ad55, #ed8936);
}

.velocity-fill.danger {
    background: linear-gradient(90deg, #fc8181, #f56565);
}

.velocity-value {
    font-size: 0.9rem;
    font-weight: 600;
    color: #4a5568;
    min-width: 80px;
    text-align: right;
}