* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

/*light mode*/
:root {
    --bg-gradient-start: #e0c3fc;
    --bg-gradient-end: #8ec5fc;
    --card-bg: rgba(255, 255, 255, 0.35);
    --card-bg-hover: rgba(255, 255, 255, 0.5);
    --text-primary: #2d1b69;
    --text-secondary: #7c3aed;
    --border-color: rgba(124, 58, 237, 0.3);
    --border-color-active: #7c3aed;
    --shadow-color: rgba(124, 58, 237, 0.15);
    --icon-filter: brightness(0) saturate(100%)
        invert(20%) sepia(78%) saturate(3500%)
        hue-rotate(252deg) brightness(85%) contrast(95%);
}

/*dark mode*/
body.dark {
    --bg-gradient-start: #1a0b2e;
    --bg-gradient-end: #2d1b4e;
    --card-bg: rgba(255, 255, 255, 0.08);
    --card-bg-hover: rgba(255, 255, 255, 0.12);
    --text-primary: #f9c3ff;
    --text-secondary: #c4b5fd;
    --border-color: rgba(167, 139, 250, 0.3);
    --border-color-active: #a78bfa;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --icon-filter: brightness(0) saturate(100%)
        invert(85%) sepia(23%) saturate(1328%)
        hue-rotate(202deg) brightness(103%) contrast(101%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display',
        'Segoe UI', Roboto, sans-serif;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(
        135deg,
        var(--bg-gradient-start),
        var(--bg-gradient-end)
    );
    transition: background 0.3s ease;
}

.container {
    width: 100%;
    max-width: 1200px;
    min-height: 600px;
    display: grid;
    grid-template-columns: 35% 65%;
    background: var(--card-bg);
    backdrop-filter: blur(40px) saturate(180%);
    border-radius: 30px;
    overflow: hidden;
    box-shadow: 0 8px 32px var(--shadow-color);
    transition: all 0.3s ease;
}

.sidebar {
    padding: 30px;
    border-right: 2px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.main-content {
    padding: 40px;
    display: flex;
    flex-direction: column;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 30px;
}

.title-icon,
.theme-icon,
.upload-icon,
.action-icon,
.btn img {
    width: 39px;
    height: 39px;
    filter: var(--icon-filter);
    transition: filter 0.3s ease, opacity 0.3s ease;
}

.icon-btn {
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 14px;
    cursor: pointer;
    background: var(--card-bg-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.upload-area {
    border: 2.5px dashed var(--border-color);
    border-radius: 20px;
    padding: 50px 30px;
    text-align: center;
    background: var(--card-bg);
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--border-color-active);
    background: var(--card-bg-hover);
    transform: translateY(-2px);
}

.upload-text {
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 8px;
}

.upload-hint {
    color: var(--text-secondary);
    opacity: 0.7;
    font-size: 14px;
}

.search-actions {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

.image-preview {
    display: none;
    width: 100%;
    height: 200px;
    border-radius: 16px;
    margin-top: 20px;
    margin-bottom: 20px;
    background: transparent;
    padding: 0;
}

.image-preview.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 12px;
}

.search-action-btn {
    padding: 18px 24px;
    border-radius: 16px;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    cursor: pointer;
    text-decoration: none;
    background: var(--card-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid var(--border-color); 
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.search-action-btn:hover {
    background: var(--card-bg-hover);
    border-color: var(--border-color-active);
    box-shadow: 0 8px 20px var(--shadow-color);
    transform: translateY(-2px);
}

.search-action-btn .action-icon {
    opacity: 0.8;
}

.search-action-btn:hover .action-icon {
    opacity: 1;
}

.loading {
    display: none;
    text-align: center;
    margin-top: 30px;
    color: var(--text-secondary);
}

.loading.active {
    display: block;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--border-color-active);
    border-radius: 50%;
    margin: 0 auto 15px;
    animation: spin 1s linear infinite;
}

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

.error {
    display: none;
    margin-top: 20px;
    padding: 16px;
    border-radius: 16px;
    background: rgba(239, 68, 68, 0.15);
    color: #dc2626;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.error.active {
    display: block;
}

.preview-image-container {
    width: 100%;
    height: 100%;
    padding: 15px;
    border-radius: 24px;
    background: var(--card-bg-hover);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 16px;
}

.gallery {
    margin-top: 30px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.image-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 15px;
    box-shadow: 0 4px 16px var(--shadow-color);
    transition: all 0.3s ease;
}

.image-card:hover {
    transform: translateY(-4px);
}

@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
    }

    .sidebar {
        border-right: none;
        border-bottom: 2px solid var(--border-color);
    }

    .title {
        font-size: 28px;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 24px;
    }
}

@supports (padding: max(0px)) {
    body {
        padding-left: max(20px, env(safe-area-inset-left));
        padding-right: max(20px, env(safe-area-inset-right));
        padding-bottom: max(20px, env(safe-area-inset-bottom));
    }
}