/* ==========================================================================
   Real Estate Image Tool - Mobile-First Responsive Stylesheet
   ========================================================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-light: #eff6ff;
    --color-success: #16a34a;
    --color-error: #dc2626;
    --color-text: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-heading: #334155;
    --color-border: #e2e8f0;
    --color-border-medium: #cbd5e1;
    --color-border-dark: #94a3b8;
    --color-bg: #f8fafc;
    --color-bg-white: #ffffff;
    --color-footer: #94a3b8;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-pill: 20px;
}

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* ---------- Layout ---------- */
main,
footer {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 16px;
}

/* ---------- SNP Site Header ---------- */
.site-header {
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    padding: 0 16px;
}

.site-header .header-inner {
    max-width: 960px;
    margin: 0 auto;
    height: 4rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-logo {
    display: flex;
    align-items: center;
}

.site-header .logo {
    height: 2.5rem;
    width: auto;
}

.back-link {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--color-text);
}

.tool-header {
    max-width: 960px;
    margin: 0 auto;
    padding: 32px 16px 24px;
    text-align: center;
}

.tool-header h1 {
    color: var(--color-text);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.tool-header .subtitle {
    color: var(--color-text-secondary);
    font-size: 1rem;
}

/* ---------- Agent Section ---------- */
.agent-section {
    margin-bottom: 24px;
}

.agent-fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.field-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.field-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-heading);
}

.field-group input[type="text"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    transition: border-color 0.2s;
}

.field-group input[type="text"]:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* ---------- Purpose Section ---------- */
.purpose-section {
    margin-bottom: 24px;
}

.purpose-section h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-heading);
    margin-bottom: 12px;
}

.purpose-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.purpose-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--color-bg-white);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
    text-align: left;
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

.purpose-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.1);
}

.purpose-card.active {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.purpose-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--color-primary-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.purpose-card.active .purpose-icon {
    background: var(--color-primary);
    color: #fff;
}

.purpose-name {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.purpose-desc {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

/* ---------- Destination Email Input ---------- */
#email-input-group {
    margin-top: 12px;
}

#email-input-group input[type="email"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    transition: border-color 0.2s;
}

#email-input-group input[type="email"]:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* ---------- Action Section ---------- */
#action-section {
    margin-top: 24px;
}

#process-btn {
    width: 100%;
    font-size: 1.1rem;
    padding: 16px 24px;
}

/* ---------- Buttons ---------- */
.primary-btn {
    display: inline-block;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.primary-btn:hover {
    background: var(--color-primary-hover);
}

.primary-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.secondary-btn {
    display: inline-block;
    background: var(--color-bg-white);
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.secondary-btn:hover {
    background: var(--color-primary-light);
}

.secondary-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ---------- File Input Label (styled as button) ---------- */
.file-input-label {
    display: inline-block;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-sm);
    padding: 10px 20px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
    margin-top: 4px;
}

.file-input-label:hover {
    background: var(--color-primary-hover);
}

/* ---------- Drop Zone ---------- */
.drop-zone {
    min-height: 200px;
    border: 2px dashed var(--color-border-dark);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
}

.drop-zone.dragover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.drop-zone-content {
    text-align: center;
    padding: 24px 16px;
}

.drop-zone-content svg {
    margin-bottom: 12px;
}

.drop-zone-content p {
    margin-bottom: 4px;
    color: var(--color-text-secondary);
}

.drop-zone-hint {
    font-size: 0.85rem;
    color: var(--color-border-dark);
}

.supported-formats {
    font-size: 0.8rem;
    color: var(--color-border-dark);
    margin-top: 8px;
}

.heic-callout {
    font-size: 0.8rem;
    color: var(--color-primary);
    font-weight: 500;
    margin-top: 4px;
}

/* ---------- Thumbnail Grid ---------- */
.thumbnail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
    margin-top: 16px;
}

/* ---------- Thumbnail Card ---------- */
.thumbnail-card {
    position: relative;
    background: var(--color-bg-white);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.thumbnail-card img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    display: block;
}

.thumbnail-info {
    padding: 8px;
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.thumbnail-info .thumb-name {
    font-weight: 500;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}

.thumbnail-info .thumb-meta {
    font-size: 0.7rem;
}

.remove-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: none;
    background: var(--color-error);
    color: #fff;
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s;
}

.thumbnail-card:hover .remove-btn {
    opacity: 1;
}

/* ---------- Settings Section ---------- */
.settings-section {
    margin-top: 24px;
}

.settings-group {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 12px;
}

.settings-group h2 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text-heading);
}

/* ---------- Preset Buttons ---------- */
.preset-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    margin-bottom: 12px;
}

.preset-btn {
    display: inline-block;
    padding: 8px 16px;
    border: 1px solid var(--color-border-medium);
    border-radius: var(--radius-pill);
    background: var(--color-bg-white);
    color: var(--color-text);
    font-size: 0.875rem;
    margin: 4px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.preset-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.preset-btn.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* ---------- Custom Size & Max Dimension ---------- */
.custom-size,
.max-dimension,
.no-resize {
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.custom-size input[type="number"],
.max-dimension input[type="number"] {
    width: 100px;
    padding: 6px 8px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 0.9rem;
}

.custom-size input[type="number"]:disabled,
.max-dimension input[type="number"]:disabled {
    opacity: 0.5;
    background: var(--color-bg);
}

.lock-ratio {
    font-size: 0.85rem;
    white-space: nowrap;
}

/* ---------- Format Options ---------- */
.format-options {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 12px;
}

.format-options label {
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
}

/* ---------- Quality Slider ---------- */
.quality-slider {
    margin-top: 8px;
}

.quality-slider label {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 6px;
    color: var(--color-text-secondary);
}

.quality-slider input[type="range"] {
    width: 100%;
    accent-color: var(--color-primary);
}

/* ---------- Toggle / Checkbox Labels ---------- */
.toggle-label {
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
}

.setting-hint {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    margin-top: 6px;
}

/* ---------- Compression Options ---------- */
#compress-options {
    margin-top: 10px;
    padding-left: 4px;
}

#compress-options label {
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

#compress-options select {
    padding: 4px 8px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 0.9rem;
}

/* ---------- Radio & Checkbox Base ---------- */
label {
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

input[type="radio"],
input[type="checkbox"] {
    accent-color: var(--color-primary);
}

/* ---------- Process Button ---------- */
#process-btn {
    width: 100%;
    margin-top: 8px;
    font-size: 1.05rem;
    padding: 14px 24px;
}

/* ---------- Progress Bar ---------- */
.progress-bar {
    height: 8px;
    background: var(--color-border);
    border-radius: 4px;
    overflow: hidden;
    margin: 16px 0;
}

.progress-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: 4px;
    width: 0;
    transition: width 0.3s;
}

#progress-text {
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

/* ---------- Results Section ---------- */
#results-section {
    margin-top: 24px;
}

#results-section h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
}

.results-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
}

/* Result card re-uses thumbnail-card styles with added download button */
.result-card {
    position: relative;
    background: var(--color-bg-white);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.result-card img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    display: block;
}

.result-info {
    padding: 8px;
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.result-info .result-name {
    font-weight: 500;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}

.result-info .result-meta {
    font-size: 0.7rem;
    margin-bottom: 6px;
}

.download-btn {
    display: block;
    width: calc(100% - 16px);
    margin: 0 8px 8px;
    padding: 6px;
    text-align: center;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 0.75rem;
    cursor: pointer;
    transition: background 0.2s;
}

.download-btn:hover {
    background: var(--color-primary-hover);
}

/* ---------- Dropbox Section ---------- */
#dropbox-section {
    margin-top: 24px;
}

#dropbox-section h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
}

.dropbox-form {
    background: var(--color-bg-white);
    padding: 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.dropbox-form label {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.dropbox-form input[type="text"] {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 0.9rem;
    margin-top: 4px;
}

#dropbox-file-list {
    margin-bottom: 12px;
}

#dropbox-file-list label {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    font-size: 0.85rem;
    border-bottom: 1px solid var(--color-border);
}

#dropbox-status {
    margin-top: 12px;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.dropbox-panel {
    background: var(--color-bg-white);
    padding: 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

/* ---------- Toast Notifications ---------- */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    color: #fff;
    font-size: 0.9rem;
    z-index: 1000;
    animation: slideIn 0.3s ease-out;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.toast-success {
    background: var(--color-success);
}

.toast-error {
    background: var(--color-error);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

/* ---------- Footer ---------- */
footer {
    text-align: center;
    color: var(--color-footer);
    font-size: 0.85rem;
    padding: 32px 0 16px;
}

/* ==========================================================================
   Responsive - Mobile (max-width: 768px)
   ========================================================================== */
@media (max-width: 768px) {
    .thumbnail-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    .results-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    .preset-btn {
        width: calc(50% - 8px);
        text-align: center;
    }

    .custom-size input[type="number"],
    .max-dimension input[type="number"] {
        width: 100%;
    }

    .custom-size,
    .max-dimension {
        flex-direction: column;
        align-items: flex-start;
    }

    .primary-btn,
    .secondary-btn {
        width: 100%;
        text-align: center;
    }

    .results-actions {
        flex-direction: column;
    }

    .agent-fields {
        grid-template-columns: 1fr;
    }

    .purpose-cards {
        grid-template-columns: 1fr;
    }

    .toast {
        left: 20px;
        right: 20px;
        bottom: 20px;
    }
}