/**
 * Welding Calculators - Styles
 * v2.0 - Grid layout, improved UX
 */

/* ============================================
   Variables
   ============================================ */
:root {
    --wc-primary: #2563eb;
    --wc-primary-hover: #1d4ed8;
    --wc-primary-light: rgba(37, 99, 235, 0.1);
    --wc-success: #059669;
    --wc-success-bg: #d1fae5;
    --wc-success-border: #6ee7b7;
    --wc-danger: #dc2626;
    --wc-danger-bg: #fee2e2;
    --wc-danger-border: #fca5a5;
    --wc-warning: #d97706;
    --wc-warning-bg: #fef3c7;
    --wc-gray-50: #f9fafb;
    --wc-gray-100: #f3f4f6;
    --wc-gray-200: #e5e7eb;
    --wc-gray-300: #d1d5db;
    --wc-gray-400: #9ca3af;
    --wc-gray-500: #6b7280;
    --wc-gray-600: #4b5563;
    --wc-gray-700: #374151;
    --wc-gray-900: #111827;
    --wc-radius: 10px;
    --wc-radius-sm: 6px;
    --wc-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --wc-shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
    --wc-transition: 0.2s ease;
}

/* ============================================
   Calculator Container
   ============================================ */
.wc-calculator {
    max-width: 720px;
    margin: 2rem auto;
    padding: 1.75rem;
    background: #fff;
    border-radius: var(--wc-radius);
    box-shadow: var(--wc-shadow-lg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

.wc-calculator__title {
    margin: 0 0 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--wc-gray-100);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--wc-gray-900);
    letter-spacing: -0.025em;
}

/* ============================================
   Form Grid Layout
   ============================================ */
.wc-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.wc-form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 640px) {
    .wc-form-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1.25rem;
    }
}

.wc-full-width {
    grid-column: 1 / -1;
}

/* ============================================
   Form Elements
   ============================================ */
.wc-form-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.wc-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--wc-gray-700);
}

.wc-label-hint {
    font-weight: 400;
    color: var(--wc-gray-400);
    font-size: 0.6875rem;
}

.wc-input,
.wc-select {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--wc-gray-900);
    background-color: #fff;
    border: 1.5px solid var(--wc-gray-300);
    border-radius: var(--wc-radius-sm);
    transition: border-color var(--wc-transition), box-shadow var(--wc-transition);
    box-sizing: border-box;
}

.wc-input:hover,
.wc-select:hover {
    border-color: var(--wc-gray-400);
}

.wc-input:focus,
.wc-select:focus {
    outline: none;
    border-color: var(--wc-primary);
    box-shadow: 0 0 0 3px var(--wc-primary-light);
}

.wc-input::placeholder {
    color: var(--wc-gray-400);
}

/* Custom Select Arrow - Ironclad Fix */
.wc-select {
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
    appearance: none !important;
    padding-right: 2.5rem !important;
    background-color: #fff !important;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000000' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e") !important;
    background-repeat: no-repeat !important;
    background-position: right 10px center !important;
    background-size: 16px 16px !important;
    cursor: pointer;
}

/* Firefox fix */
.wc-select::-ms-expand {
    display: none !important;
}

/* Input Helper Text */
.wc-input-helper {
    font-size: 0.6875rem;
    color: var(--wc-gray-400);
    margin-top: 0.25rem;
}

/* ============================================
   Button
   ============================================ */
.wc-button {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: #fff;
    background: var(--wc-primary);
    border: none;
    border-radius: var(--wc-radius-sm);
    cursor: pointer;
    transition: background var(--wc-transition), transform 0.1s;
}

.wc-button:hover:not(:disabled) {
    background: var(--wc-primary-hover);
}

.wc-button:active:not(:disabled) {
    transform: scale(0.98);
}

.wc-button:disabled {
    background: var(--wc-gray-300);
    cursor: not-allowed;
}

.wc-button--loading .wc-button__text {
    opacity: 0.7;
}

.wc-button__spinner {
    display: none;
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: wc-spin 0.8s linear infinite;
}

.wc-button--loading .wc-button__spinner {
    display: inline-block;
}

@keyframes wc-spin {
    to {
        transform: rotate(360deg);
    }
}

/* ============================================
   Results Container
   ============================================ */
.wc-result {
    margin-top: 1.5rem;
}

.wc-result-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: var(--wc-gray-50);
    border: 2px dashed var(--wc-gray-200);
    border-radius: var(--wc-radius);
    text-align: center;
}

.wc-result-placeholder__icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    opacity: 0.5;
}

.wc-result-placeholder__text {
    font-size: 0.8125rem;
    color: var(--wc-gray-500);
}

.wc-result--active .wc-result-placeholder {
    display: none;
}

/* ============================================
   Result Card
   ============================================ */
.wc-result-card {
    border-radius: var(--wc-radius);
    overflow: hidden;
    border: 2px solid var(--wc-gray-200);
    background: #fff;
    animation: wc-fadeIn 0.3s ease;
}

@keyframes wc-fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

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

.wc-result--safe .wc-result-card,
.wc-result-card.wc-result--safe {
    border-color: var(--wc-success-border);
}

.wc-result--danger .wc-result-card,
.wc-result-card.wc-result--danger {
    border-color: var(--wc-danger-border);
}

/* Result Header */
.wc-result-header {
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--wc-gray-100);
}

.wc-result--safe .wc-result-header {
    background: var(--wc-success-bg);
    border-bottom-color: var(--wc-success-border);
}

.wc-result--danger .wc-result-header,
.wc-result-card.wc-result--danger .wc-result-header {
    background: var(--wc-danger-bg);
    border-bottom-color: var(--wc-danger-border);
}

.wc-result-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.wc-result-status__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    font-size: 0.875rem;
    font-weight: 700;
    border-radius: 50%;
    color: #fff;
}

.wc-result--safe .wc-result-status__icon {
    background: var(--wc-success);
}

.wc-result--danger .wc-result-status__icon,
.wc-result-card.wc-result--danger .wc-result-status__icon {
    background: var(--wc-danger);
}

.wc-result-status__text {
    font-size: 0.9375rem;
    font-weight: 600;
}

.wc-result--safe .wc-result-status__text {
    color: var(--wc-success);
}

.wc-result--danger .wc-result-status__text,
.wc-result-card.wc-result--danger .wc-result-status__text {
    color: var(--wc-danger);
}

/* Result Body */
.wc-result-body {
    padding: 1rem;
}

.wc-result-error {
    margin: 0;
    color: var(--wc-danger);
    font-weight: 500;
}

.wc-result-error-list {
    margin: 0.75rem 0 0;
    padding-left: 1.5rem;
    color: var(--wc-danger);
}

/* ============================================
   Result Metrics Grid
   ============================================ */
.wc-result-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.wc-result-metric {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
    padding: 0.625rem;
    background: var(--wc-gray-50);
    border-radius: var(--wc-radius-sm);
}

.wc-result-metric__icon {
    width: 1rem;
    height: 1rem;
    margin-bottom: 0.125rem;
    opacity: 0.6;
}

.wc-result-metric__icon--shield::before {
    content: '🛡️';
}

.wc-result-metric__icon--bolt::before {
    content: '⚡';
}

.wc-result-metric__icon--ruler::before {
    content: '📐';
}

.wc-result-metric__icon--weight::before {
    content: '⚖️';
}

.wc-result-metric__icon--stack::before {
    content: '📦';
}

.wc-result-metric__label {
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--wc-gray-500);
    font-weight: 500;
}

.wc-result-metric__value {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--wc-gray-900);
    line-height: 1.2;
}

.wc-result-metric__value small {
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--wc-gray-500);
}

.wc-result-metric__value em {
    display: block;
    font-size: 0.625rem;
    font-style: normal;
    font-weight: 400;
    color: var(--wc-gray-400);
    margin-top: 0.125rem;
}

/* ============================================
   Result Details Table
   ============================================ */
.wc-result-details {
    margin-top: 1rem;
    border-top: 1px solid var(--wc-gray-200);
    padding-top: 1rem;
}

.wc-result-details__title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--wc-gray-600);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.wc-result-table {
    width: 100%;
    font-size: 0.8125rem;
    border-collapse: collapse;
}

.wc-result-table td {
    padding: 0.375rem 0;
    border-bottom: 1px solid var(--wc-gray-100);
}

.wc-result-table td:first-child {
    color: var(--wc-gray-600);
}

.wc-result-table td:last-child {
    text-align: right;
    font-weight: 600;
    color: var(--wc-gray-900);
}

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

/* ============================================
   Warnings
   ============================================ */
.wc-result-warnings {
    margin-top: 0.75rem;
    padding: 0.75rem;
    background: var(--wc-warning-bg);
    border-radius: var(--wc-radius-sm);
}

.wc-result-warnings__title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--wc-warning);
    margin-bottom: 0.375rem;
}

.wc-result-warnings__list {
    margin: 0;
    padding-left: 1.25rem;
    font-size: 0.75rem;
    color: var(--wc-gray-700);
}

.wc-result-warnings__list li {
    margin-bottom: 0.25rem;
}

.wc-result-warnings__list li:last-child {
    margin-bottom: 0;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 480px) {
    .wc-calculator {
        margin: 1rem;
        padding: 1rem;
    }

    .wc-result-grid {
        grid-template-columns: 1fr;
    }

    .wc-result-metric {
        flex-direction: row;
        align-items: center;
        gap: 0.5rem;
    }

    .wc-result-metric__icon {
        order: -1;
        margin-bottom: 0;
    }

    .wc-result-metric__label {
        flex: 1;
    }

    .wc-result-metric__value {
        text-align: right;
    }
}

/* ============================================
   Tooltips - Fixed Toast (All Devices)
   ============================================ */

.wc-info-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    margin-left: 4px;
    border-radius: 50%;
    background-color: #e0e0e0;
    color: #666;
    font-size: 10px;
    font-weight: bold;
    cursor: help;
    position: relative;
    vertical-align: middle;
    transition: all 0.2s;
    line-height: 1;
    flex-shrink: 0;
}

.wc-info-icon:hover,
.wc-info-icon:focus {
    background-color: #007cba;
    color: #fff;
    outline: none;
}

/* Tooltip Body - Fixed Position Toast */
.wc-info-icon::after {
    content: attr(data-tooltip);
    position: fixed;
    bottom: 16px;
    left: 16px;
    right: 16px;
    width: auto;
    max-width: none;
    padding: 12px 16px;
    background-color: rgba(30, 30, 30, 0.95);
    color: #fff;
    font-size: 13px;
    line-height: 1.5;
    border-radius: 8px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    pointer-events: none;
    z-index: 999999;
    white-space: normal;
    text-align: left;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    font-weight: normal;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* No arrow needed for toast */
.wc-info-icon::before {
    display: none;
}

/* Show State */
.wc-info-icon:hover::after,
.wc-info-icon:focus::after {
    opacity: 1;
    visibility: visible;
}

/* Desktop: limit width for readability */
@media (min-width: 768px) {
    .wc-info-icon::after {
        left: auto;
        right: 16px;
        max-width: 400px;
    }
}