/* css/style.css */
:root {
    --bg-color: #f0f5f4;
    --surface-color: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --primary: #387469;
    --primary-hover: #2b5c53;
    --success: #10b981;
    --success-hover: #059669;
    --danger: #ef4444;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.08);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.05);
    --radius-md: 10px;
    --radius-lg: 16px;
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.4);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navbar */
.navbar {
    background-color: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.nav-content {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    object-fit: cover;
}

/* Hamburger button (hidden on desktop) */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    color: var(--text-main);
    font-size: 1.4rem;
    line-height: 1;
}

.nav-links {
    display: flex;
    gap: 20px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    font-size: 0.95rem;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
    background-color: #e6f0ef;
}

/* ── Mobile Navigation ── */

/* Backdrop overlay - not needed for dropdown, keep hidden */
.nav-backdrop {
    display: none;
}

@media (max-width: 768px) {

    /* Show hamburger button */
    .nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 200;
        width: 42px;
        height: 42px;
        border-radius: 8px;
        background: var(--bg-color);
        border: 1px solid var(--border-color);
        font-size: 1.3rem;
        color: var(--text-main);
    }

    /* Hide nav by default on mobile */
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        width: 100%;
        background: #ffffff;
        flex-direction: column;
        align-items: stretch;
        padding: 8px 0 16px;
        gap: 0;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        border-top: 1px solid var(--border-color);
        z-index: 999;
    }

    /* Show nav when open */
    .nav-links.open {
        display: flex;
    }

    /* Nav links inside dropdown */
    .nav-links a {
        font-size: 1rem;
        font-weight: 500;
        width: 100%;
        text-align: left;
        padding: 14px 24px;
        border-radius: 0;
        color: var(--text-main);
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

    .nav-links a:hover,
    .nav-links a.active {
        background-color: #e6f0ef;
        color: var(--primary);
    }
}

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

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

/* Main Content */
.main-content {
    padding: 32px 16px;
}

@media (min-width: 769px) {
    .main-content {
        padding: 40px 24px;
    }
}

.tool-workspace {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

@media (max-width: 900px) {
    .tool-workspace {
        flex-direction: column;
    }
}

.workspace-left {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 100%;
}

.workspace-right {
    width: 350px;
    flex-shrink: 0;
}

@media (max-width: 900px) {
    .workspace-right {
        width: 100%;
    }
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--border-color);
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--primary);
    background-color: #e6f0ef;
}

.hidden-input {
    display: none;
}

.upload-icon {
    font-size: 3.5rem;
    color: var(--primary);
    margin-bottom: 15px;
    transition: transform 0.3s ease;
}

.upload-zone:hover .upload-icon {
    transform: translateY(-5px);
}

.upload-content h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: var(--text-main);
}

.upload-content p {
    color: var(--text-muted);
}

/* Image Grid */
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 24px;
}

.image-card {
    background: var(--surface-color);
    border-radius: var(--radius-md);
    padding: 12px;
    box-shadow: var(--shadow-sm);
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.image-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.image-preview-container {
    position: relative;
    width: 100%;
    height: 160px;
    background-color: var(--bg-color);
    border-radius: 6px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-preview {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: opacity 0.3s;
}

/* Processing Overlay */
.processing-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(2px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.image-card.processing .processing-overlay {
    opacity: 1;
    pointer-events: all;
}

.spinner {
    width: 30px;
    height: 30px;
    border: 3px solid #e6f0ef;
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 1s ease-in-out infinite;
}

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

.image-info {
    font-size: 0.85rem;
    flex-grow: 1;
}

.image-name {
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-main);
}

.image-meta {
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
    margin-top: 6px;
    font-size: 0.8rem;
}

.image-actions {
    display: flex;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
}

.icon-btn {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    cursor: pointer;
    color: var(--text-main);
    padding: 6px 10px;
    border-radius: 6px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.icon-btn.delete-btn:hover {
    color: var(--danger);
    border-color: var(--danger);
}

/* Controls Panel */
.controls-panel {
    background-color: var(--surface-color);
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 90px;
}

.controls-panel h2 {
    font-size: 1.25rem;
    margin-bottom: 5px;
}

.tool-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.control-group {
    margin-bottom: 20px;
}

.control-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-main);
}

.control-group select,
.control-group input[type="number"] {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s;
}

.control-group select:focus,
.control-group input[type="number"]:focus {
    border-color: var(--primary);
}

.control-row {
    margin-top: 15px;
    display: flex;
    gap: 15px;
}

.input-col {
    flex: 1;
}

.checkbox-label {
    display: flex !important;
    align-items: center;
    gap: 8px;
    font-weight: 400 !important;
    cursor: pointer;
}

.hidden {
    display: none !important;
}

.mt-2 {
    margin-top: 10px;
}

/* Quality Slider */
.quality-slider-container {
    display: flex;
    align-items: center;
    gap: 15px;
}

input[type="range"] {
    flex: 1;
}

#qualityValue {
    font-weight: 600;
    min-width: 40px;
    text-align: right;
}

/* Buttons */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 30px;
}

.btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn:active {
    transform: scale(0.98);
}

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

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

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

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

.btn-secondary {
    background-color: var(--bg-color);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: #e2e8f0;
}

/* Site Footer */
.site-footer {
    background-color: var(--surface-color);
    border-top: 1px solid var(--border-color);
    padding: 40px 24px 20px;
    margin-top: 60px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    max-width: 1280px;
    margin: 0 auto;
}

.footer-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    margin-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Simple Page Container (About, Contact, etc) */
.page-container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--surface-color);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-top: 40px;
    line-height: 1.8;
}

.page-container h1 {
    font-size: 2.2rem;
    margin-bottom: 20px;
    color: var(--primary);
}

.page-container h2 {
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.page-container p {
    margin-bottom: 15px;
    color: #475569;
}

/* ===== RESPONSIVE BREAKPOINTS ===== */

/* Small phones */
@media (max-width: 480px) {
    .container {
        padding: 0 14px;
    }

    .main-content {
        padding: 20px 14px;
    }

    .logo {
        font-size: 1.2rem;
    }

    .upload-zone {
        padding: 36px 14px;
    }

    .upload-icon {
        font-size: 2.5rem;
    }

    .image-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 14px;
    }

    .image-preview-container {
        height: 120px;
    }

    .page-container {
        padding: 24px 18px;
        margin-top: 20px;
        border-radius: var(--radius-md);
    }

    .page-container h1 {
        font-size: 1.6rem;
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
    }

    .footer-links {
        gap: 12px;
        flex-direction: column;
    }

    .action-buttons {
        margin-top: 20px;
    }
}

/* Tablets */
@media (min-width: 481px) and (max-width: 768px) {
    .page-container {
        padding: 30px 24px;
        margin-top: 24px;
    }

    .image-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Ensure footer never overlaps on small screens */
@media (max-width: 768px) {
    .site-footer {
        padding: 30px 16px 16px;
        margin-top: 40px;
    }

    .nav-content {
        height: 64px;
    }
}