/**
 * Grand Tools Hub - Common Styles
 * Shared component styles for all tools
 */

/* ===================
   BASE RESET
   =================== */
.gth-tool *,
.gth-tool *::before,
.gth-tool *::after {
    box-sizing: border-box;
}

/* ===================
   TOOL CONTAINER
   =================== */
.gth-tool {
    font-family: var(--gth-font-family);
    font-size: var(--gth-text-base);
    line-height: var(--gth-leading-normal);
    color: var(--gth-text-primary);
    background: var(--gth-bg-card);
    border: 1px solid var(--gth-border-color);
    border-radius: var(--gth-radius-lg);
    padding: var(--gth-space-6);
    max-width: 600px;
    margin: 0 auto;
    box-shadow: var(--gth-shadow-sm);
    transition: box-shadow var(--gth-duration-normal) var(--gth-ease-default);
}

.gth-tool:hover {
    box-shadow: var(--gth-shadow-md);
}

/* ===================
   TOOL HEADER
   =================== */
.gth-tool-title {
    font-size: var(--gth-text-xl);
    font-weight: var(--gth-font-semibold);
    color: var(--gth-text-primary);
    margin: 0 0 var(--gth-space-4) 0;
    padding-bottom: var(--gth-space-3);
    border-bottom: 1px solid var(--gth-border-color);
}

/* ===================
   FORM ELEMENTS
   =================== */

/* Labels */
.gth-label {
    display: block;
    font-size: var(--gth-text-sm);
    font-weight: var(--gth-font-medium);
    color: var(--gth-text-primary);
    margin-bottom: var(--gth-space-2);
}

/* Input Groups */
.gth-input-group {
    margin-bottom: var(--gth-space-4);
}

.gth-input-row {
    display: flex;
    gap: var(--gth-space-4);
}

.gth-input-row .gth-input-group {
    flex: 1;
}

/* Text/Number Inputs */
.gth-input {
    width: 100%;
    height: 44px;
    padding: var(--gth-space-3) var(--gth-space-4);
    font-family: inherit;
    font-size: var(--gth-text-base);
    color: var(--gth-text-primary);
    background: var(--gth-bg-input);
    border: 1px solid var(--gth-border-color);
    border-radius: var(--gth-radius-md);
    transition: all var(--gth-duration-normal) var(--gth-ease-default);
    outline: none;
}

.gth-input:hover {
    border-color: var(--gth-border-color-hover);
}

.gth-input:focus {
    border-color: var(--gth-border-color-focus);
    box-shadow: var(--gth-ring);
}

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

.gth-input:disabled {
    background: var(--gth-gray-100);
    cursor: not-allowed;
    opacity: 0.7;
}

/* Input Error State */
.gth-input-error {
    border-color: var(--gth-error) !important;
    animation: gth-shake 300ms ease-in-out;
}

.gth-input-error:focus {
    box-shadow: var(--gth-ring-error);
}

/* Select */
.gth-select {
    width: 100%;
    height: 44px;
    padding: var(--gth-space-3) var(--gth-space-4);
    padding-right: var(--gth-space-10);
    font-family: inherit;
    font-size: var(--gth-text-base);
    color: var(--gth-text-primary);
    background: var(--gth-bg-input);
    border: 1px solid var(--gth-border-color);
    border-radius: var(--gth-radius-md);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 20 20' fill='%2364748b'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z' clip-rule='evenodd'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    transition: all var(--gth-duration-normal) var(--gth-ease-default);
    outline: none;
}

.gth-select:hover {
    border-color: var(--gth-border-color-hover);
}

.gth-select:focus {
    border-color: var(--gth-border-color-focus);
    box-shadow: var(--gth-ring);
}

/* Textarea */
.gth-textarea {
    width: 100%;
    min-height: 120px;
    padding: var(--gth-space-3) var(--gth-space-4);
    font-family: inherit;
    font-size: var(--gth-text-base);
    color: var(--gth-text-primary);
    background: var(--gth-bg-input);
    border: 1px solid var(--gth-border-color);
    border-radius: var(--gth-radius-md);
    resize: vertical;
    transition: all var(--gth-duration-normal) var(--gth-ease-default);
    outline: none;
}

.gth-textarea:focus {
    border-color: var(--gth-border-color-focus);
    box-shadow: var(--gth-ring);
}

/* Helper Text */
.gth-helper-text {
    font-size: var(--gth-text-sm);
    color: var(--gth-text-secondary);
    margin-top: var(--gth-space-1);
}

/* ===================
   BUTTONS
   =================== */
.gth-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--gth-space-2);
    height: 44px;
    padding: var(--gth-space-3) var(--gth-space-6);
    font-family: inherit;
    font-size: var(--gth-text-base);
    font-weight: var(--gth-font-medium);
    border: none;
    border-radius: var(--gth-radius-md);
    cursor: pointer;
    transition: all var(--gth-duration-normal) var(--gth-ease-default);
    outline: none;
}

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

/* Primary Button */
.gth-btn-primary {
    color: var(--gth-text-inverse);
    background: var(--gth-primary);
}

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

.gth-btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.gth-btn-primary:focus-visible {
    box-shadow: var(--gth-ring);
}

/* Secondary Button */
.gth-btn-secondary {
    color: var(--gth-text-primary);
    background: var(--gth-bg-card);
    border: 1px solid var(--gth-border-color);
}

.gth-btn-secondary:hover:not(:disabled) {
    background: var(--gth-gray-50);
    border-color: var(--gth-border-color-hover);
}

/* Ghost Button */
.gth-btn-ghost {
    color: var(--gth-primary);
    background: transparent;
}

.gth-btn-ghost:hover:not(:disabled) {
    background: var(--gth-primary-subtle);
}

/* Small Button */
.gth-btn-sm {
    height: 32px;
    padding: var(--gth-space-2) var(--gth-space-3);
    font-size: var(--gth-text-sm);
}

/* Button Group */
.gth-btn-group {
    display: flex;
    gap: var(--gth-space-3);
    margin-top: var(--gth-space-4);
}

/* ===================
   TABS
   =================== */
.gth-tabs {
    margin-bottom: var(--gth-space-4);
}

.gth-tab-list {
    display: flex;
    gap: var(--gth-space-1);
    padding: var(--gth-space-1);
    background: var(--gth-gray-100);
    border-radius: var(--gth-radius-md);
    list-style: none;
    margin: 0;
}

.gth-tab {
    flex: 1;
    padding: var(--gth-space-2) var(--gth-space-4);
    font-size: var(--gth-text-sm);
    font-weight: var(--gth-font-medium);
    color: var(--gth-text-secondary);
    background: transparent;
    border: none;
    border-radius: var(--gth-radius-sm);
    cursor: pointer;
    transition: all var(--gth-duration-normal) var(--gth-ease-default);
    text-align: center;
}

.gth-tab:hover {
    color: var(--gth-text-primary);
}

.gth-tab.active {
    color: var(--gth-text-primary);
    background: var(--gth-bg-card);
    box-shadow: var(--gth-shadow-sm);
}

.gth-tab-panel {
    display: none;
}

.gth-tab-panel.active {
    display: block;
    animation: gth-fadeIn var(--gth-duration-slow) var(--gth-ease-out);
}

/* ===================
   RESULTS
   =================== */
.gth-result {
    margin-top: var(--gth-space-6);
    padding: var(--gth-space-6);
    background: var(--gth-bg-result);
    border: 1px solid var(--gth-primary-light);
    border-radius: var(--gth-radius-lg);
    text-align: center;
    animation: gth-resultReveal var(--gth-duration-slow) var(--gth-ease-out);
}

.gth-result-label {
    font-size: var(--gth-text-sm);
    color: var(--gth-text-secondary);
    margin-bottom: var(--gth-space-2);
}

.gth-result-value {
    font-size: var(--gth-text-4xl);
    font-weight: var(--gth-font-bold);
    color: var(--gth-primary);
    line-height: var(--gth-leading-tight);
}

.gth-result-secondary {
    font-size: var(--gth-text-lg);
    color: var(--gth-text-secondary);
    margin-top: var(--gth-space-2);
}

/* Result Cards Grid */
.gth-result-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--gth-space-4);
    margin-top: var(--gth-space-6);
}

.gth-result-card {
    padding: var(--gth-space-4);
    background: var(--gth-bg-result);
    border: 1px solid var(--gth-primary-light);
    border-radius: var(--gth-radius-md);
    text-align: center;
}

.gth-result-card-label {
    font-size: var(--gth-text-xs);
    color: var(--gth-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--gth-space-1);
}

.gth-result-card-value {
    font-size: var(--gth-text-2xl);
    font-weight: var(--gth-font-bold);
    color: var(--gth-primary);
}

/* ===================
   FORMULA DISPLAY
   =================== */
.gth-formula {
    margin-top: var(--gth-space-4);
    padding: var(--gth-space-4);
    background: var(--gth-bg-code);
    border-radius: var(--gth-radius-md);
    font-family: var(--gth-font-mono);
    font-size: var(--gth-text-sm);
    color: var(--gth-text-secondary);
}

.gth-formula-label {
    font-family: var(--gth-font-family);
    font-weight: var(--gth-font-medium);
    color: var(--gth-text-primary);
    margin-bottom: var(--gth-space-2);
}

/* ===================
   ERRORS
   =================== */
.gth-error {
    padding: var(--gth-space-3) var(--gth-space-4);
    background: var(--gth-error-light);
    border: 1px solid var(--gth-error);
    border-radius: var(--gth-radius-md);
    color: var(--gth-error);
    font-size: var(--gth-text-sm);
    margin-top: var(--gth-space-4);
}

/* ===================
   COPY BUTTON
   =================== */
.gth-copy-btn {
    margin-top: var(--gth-space-4);
}

.gth-copy-btn.copied {
    background: var(--gth-success);
}

/* ===================
   ANIMATIONS
   =================== */
@keyframes gth-resultReveal {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes gth-fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes gth-shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}

@keyframes gth-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.gth-calculating {
    animation: gth-pulse 1.5s ease-in-out infinite;
}

/* ===================
   RESPONSIVE
   =================== */
@media (max-width: 640px) {
    .gth-tool {
        padding: var(--gth-space-4);
        border-radius: var(--gth-radius-md);
    }

    .gth-input-row {
        flex-direction: column;
        gap: 0;
    }

    .gth-result-value {
        font-size: var(--gth-text-3xl);
    }

    .gth-btn-group {
        flex-direction: column;
    }

    .gth-btn {
        width: 100%;
    }

    .gth-tab-list {
        flex-wrap: wrap;
    }

    .gth-tab {
        flex: 1 1 auto;
        min-width: 45%;
    }
}

/* ===================
   ACCESSIBILITY
   =================== */
.gth-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus visible for keyboard navigation */
.gth-tool :focus-visible {
    outline: 2px solid var(--gth-primary);
    outline-offset: 2px;
}

/* ===================
   CARD GRID (Hub & Category Pages)
   =================== */
.gth-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin: 24px 0;
}

.gth-card-grid-tools {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.gth-card-grid .gth-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 0;
    overflow: hidden;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
}

.gth-card-grid .gth-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.gth-card-grid .gth-card-image {
    margin: 0 !important;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gth-card-grid .gth-card-image img {
    width: 100%;
    height: 120px;
    object-fit: cover;
}

.gth-card-grid .gth-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1e293b;
    margin: 16px 16px 8px 16px !important;
    padding: 0 !important;
}

.gth-card-grid .gth-card-description {
    font-size: 0.875rem;
    color: #64748b;
    margin: 0 16px 16px 16px !important;
    line-height: 1.5;
    flex-grow: 1;
}

.gth-card-grid .wp-block-buttons {
    padding: 0 16px 16px 16px;
    margin: 0 !important;
}

.gth-card-grid .wp-block-button__link {
    width: 100%;
    text-align: center;
    background: #2563eb;
    color: #ffffff;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
    transition: background 0.2s ease;
}

.gth-card-grid .wp-block-button__link:hover {
    background: #1d4ed8;
}

/* Dark Mode Support for Cards */
@media (prefers-color-scheme: dark) {
    .gth-card-grid .gth-card {
        background: #1e293b;
        border-color: #334155;
    }

    .gth-card-grid .gth-card-image {
        background: linear-gradient(135deg, #1e3a5f 0%, #1e293b 100%);
    }

    .gth-card-grid .gth-card-title {
        color: #f1f5f9;
    }

    .gth-card-grid .gth-card-description {
        color: #94a3b8;
    }
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .gth-card-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .gth-card-grid .gth-card-image img {
        height: 100px;
    }
}