/* General Styles */
:root {
    --bg-color-light: #e0e5ec;
    --bg-color-dark: #2c2f33;
    --text-color-light: #333;
    --text-color-dark: #f0f0f0;
    --primary-color-light: #4a90e2;
    --primary-color-dark: #5aaeff;
    --shadow-light-outer: 6px 6px 12px #c1c9d2, -6px -6px 12px #ffffff;
    --shadow-dark-outer: 6px 6px 12px #232528, -6px -6px 12px #35393e;
    --shadow-light-inner: inset 6px 6px 12px #c1c9d2, inset -6px -6px 12px #ffffff;
    --shadow-dark-inner: inset 6px 6px 12px #232528, inset -6px -6px 12px #35393e;
    --border-radius: 12px;
    --transition-speed: 0.3s;
    --font-family-modern: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    --glow-color-dark: rgba(90, 174, 255, 0.5);
}

body {
    margin: 0;
    font-family: var(--font-family-modern);
    background-color: var(--bg-color-light);
    color: var(--text-color-light);
    transition: background-color var(--transition-speed), color var(--transition-speed);
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
    padding-top: 20px;
    overflow-y: hidden;
}

body.dark-theme {
    --bg-color-light: var(--bg-color-dark);
    --text-color-light: var(--text-color-dark);
    --shadow-light-outer: var(--shadow-dark-outer);
    --shadow-light-inner: var(--shadow-dark-inner);
    --primary-color-light: var(--primary-color-dark);
}

/* Apply glow effect in dark theme */
body.dark-theme .neumorphic-button:hover,
body.dark-theme .neumorphic-search-bar:focus-within,
body.dark-theme .neumorphic-panel {
    box-shadow: var(--shadow-dark-outer), 0 0 15px 5px var(--glow-color-dark);
}

body.dark-theme #search-input:focus {
    box-shadow: var(--shadow-dark-inner), 0 0 10px 3px var(--glow-color-dark);
}

/* SVG icon colors */
.neumorphic-button img,
.action-icon {
    filter: invert(0%); /* Default for light theme */
}

body.dark-theme .neumorphic-button img,
body.dark-theme .action-icon {
    filter: invert(100%); /* Invert for dark theme to make black SVGs white */
}

.container {
    width: 90%;
    max-width: 800px;
    padding: 20px;
    box-sizing: border-box;
}

/* Header */
header {
    margin-bottom: 30px;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    width: 100%;
}

.logo-title-container {
    display: flex;
    align-items: center;
    gap: 12px;
}
#app-logo {
    height: 40px;
    width: 40px;
    border-radius: 50%;
    box-shadow: var(--shadow-light-outer);
    margin-right: 1px;
}
#app-title {
    font-size: 2em;
    font-weight: 600;
    color: var(--primary-color-light);
    margin: 0 10px 0 0;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
    display: inline-block;
    white-space: nowrap;
}
@media (min-width: 1200px) {
    .search-bar-container {
        margin-top: 30px;
    }
    #current-search-engine-logo-container {
        margin-bottom: 10px;
        margin-top: 200px;
        height: 30px; 
    }
    /* #current-search-engine-logo-container img {
        max-height: 350px;
        max-width: 150px;
        object-fit: contain;
    } */
}
@media (max-width: 600px) {
    #current-search-engine-logo-container {
        margin-bottom: 10px;
        margin-top: 40px;
        height: 30px; 
    }
    #app-title {
        font-size: 1.3em;
        margin-right: 6px;
        display: inline-block;
        white-space: nowrap;
    }
    #settings-button span {
        display: none !important;
    }
    #settings-button img {
        margin-right: 0 !important;
    }
    .top-bar {
        flex-direction: row;
        gap: 10px;
        justify-content: space-between;
        align-items: center;
    }
    #settings-button {
        margin-left: auto;
    }
    .settings-panel {
        width: 280px;
        left: -300px;
    }
    .settings-panel.open {
        left: 0;
    }
    .search-bar-container {
        margin-top: 5px;
    }
}
/* 搜索栏上方当前使用的搜索引擎的logo与标题 */
#current-search-engine-logo-container {
    text-align: center;
}

#current-search-engine-logo-container img {
    max-height: 35px;
    max-width: 150px;
    object-fit: contain;
}

/* Neumorphic Elements */
.neumorphic-button, .neumorphic-input, .neumorphic-select, .neumorphic-panel, .neumorphic-search-bar {
    background-color: var(--bg-color-light);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light-outer);
    transition: box-shadow var(--transition-speed), background-color var(--transition-speed);
    border: none;
    outline: none;
    padding: 10px 15px;
}

.neumorphic-button {
    cursor: pointer;
    color: var(--text-color-light);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.neumorphic-button:hover {
    box-shadow: var(--shadow-light-inner);
}

.neumorphic-button:active {
    box-shadow: var(--shadow-light-inner);
    transform: translateY(1px) translateX(1px);
}

.neumorphic-button img {
    height: 16px;
    width: 16px;
}

.neumorphic-input, .neumorphic-select {
    width: 100%;
    box-sizing: border-box;
    padding: 12px 18px;
    font-size: 1em;
    color: var(--text-color-light);
    box-shadow: var(--shadow-light-inner);
}

.neumorphic-select {
    appearance: none;
    background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23007CB2%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E');
    background-repeat: no-repeat;
    background-position: right 15px center;
    background-size: .65em auto;
    padding-right: 30px; /* Make space for the arrow */
}

/* Search Bar */
.search-bar-container {
    display: flex;
    align-items: center;
    padding: 5px;
    margin-bottom: 20px;
}

#search-input {
    flex-grow: 1;
    border: none;
    background: transparent;
    box-shadow: none; /* Override neumorphic-input for inner element */
    font-size: 1.1em;
    padding: 10px;
    color: var(--text-color-light);
    border-radius: var(--border-radius); /* Add border-radius for focus style */
    transition: box-shadow var(--transition-speed);
}

/* 搜索框选中样式优化 */
#search-input:focus {
    box-shadow: 0 0 0 3px var(--primary-color-light), var(--shadow-light-inner);
    outline: none;
    background-color: #f7fbff;
    border: 1.5px solid var(--primary-color-light);
}
body.dark-theme #search-input:focus {
    box-shadow: 0 0 0 3px var(--primary-color-dark), var(--shadow-dark-inner), 0 0 10px 3px var(--glow-color-dark);
    background-color: #23272e;
    border: 1.5px solid var(--primary-color-dark);
}

/* 搜索引擎icon切换区样式 */
#search-engine-icons-bar {
    display: flex;
    gap: 10px;
    justify-content: center;
    align-items: center;
    margin-bottom: 8px;
}
.engine-icon-btn {
    background: transparent;
    border-radius: 8px;
    padding: 4px 8px;
    transition: border 0.2s, background 0.2s;
    box-shadow: none;
    min-width: 32px;
    min-height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.engine-icon-btn img.engine-text-logo {
    max-height: 28px;
    max-width: 80px;
}
.engine-icon-btn img.engine-favicon {
    max-height: 20px;
    max-width: 20px;
}
.engine-icon-btn.selected,
.engine-icon-btn:focus {
    border: 2px solid var(--primary-color-light);
    background: #eaf3ff;
}
body.dark-theme .engine-icon-btn.selected,
body.dark-theme .engine-icon-btn:focus {
    border: 2px solid var(--primary-color-dark);
    background: #23272e;
}

/* Edit/Delete SVG 图标按钮样式 */
.actions .svg-icon-btn {
    background: transparent;
    border: none;
    padding: 4px;
    margin: 0 2px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: background 0.2s;
}
.actions .svg-icon-btn:hover {
    background: #eaf3ff;
}
body.dark-theme .actions .svg-icon-btn:hover {
    background: #23272e;
}
.actions .svg-icon-btn svg {
    width: 18px;
    height: 18px;
    display: block;
    filter: invert(0%);
}
body.dark-theme .actions .svg-icon-btn svg {
    filter: invert(100%);
}
#search-input::placeholder {
    color: #888;
}

#search-button {
    margin-left: 5px;
    padding: 10px;
}

/* Settings Panel */
.settings-panel {
    position: fixed;
    top: 0;
    left: -350px; /* Start off-screen */
    width: 320px;
    height: 100%;
    padding: 20px;
    box-sizing: border-box;
    overflow-y: auto;
    z-index: 1000;
    transition: left 0.4s cubic-bezier(0.25, 0.8, 0.25, 1); /* Fluent-like transition */
    border-top-right-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
    border-left: none;
}

.settings-panel.open {
    left: 0;
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.settings-header h2 {
    margin: 0;
    font-size: 1.5em;
    color: var(--primary-color-light);
}

.close-button {
    font-size: 1.5em;
    padding: 5px 10px;
}

.setting-item {
    margin-bottom: 20px;
}

.setting-item label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

/* Search Sources List in Settings */
#search-sources-list {
    margin-bottom: 15px;
}

.search-source-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px;
    margin-bottom: 8px;
    background-color: rgba(255,255,255,0.05); /* Subtle background for items */
    border-radius: 8px;
    box-shadow: var(--shadow-light-inner);
}

.search-source-item img.favicon {
    width: 16px;
    height: 16px;
    margin-right: 10px;
    border-radius: 3px;
}

.search-source-item span {
    flex-grow: 1;
}

.search-source-item .actions button {
    margin-left: 5px;
    padding: 5px 8px;
    font-size: 0.9em;
}

/* Modal for Editing Search Source */
.modal {
    display: flex; /* Changed from none to flex */
    position: fixed;
    z-index: 1001;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0);
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: 
        background-color 0.3s ease,
        opacity 0.3s ease,
        visibility 0.3s ease;
}

.modal.show {
    background-color: rgba(0,0,0,0.4);
    opacity: 1;
    visibility: visible;
}

.modal-content {
    padding: 25px;
    width: 90%;
    max-width: 400px;
    box-sizing: border-box;
    transform: translateY(-20px);
    transition: transform 0.3s ease;
    opacity: 0;
}

.modal.show .modal-content {
    transform: translateY(0);
    opacity: 1;
}

body.modal-open {
    overflow: hidden;
}

.modal-content h4 {
    margin-top: 0;
    margin-bottom: 20px;
    color: var(--primary-color-light);
}

.modal-content label {
    display: block;
    margin-top: 10px;
    margin-bottom: 5px;
}

.modal-content input {
    margin-bottom: 10px;
}

.modal-content button {
    margin-top: 15px;
    margin-right: 10px;
}

/* Fluent Design Hints (subtle) */
/* Acrylic effect can be simulated with semi-transparent backgrounds if desired, 
   but true acrylic requires more complex layering or JS. 
   For now, focusing on clean lines and neumorphism. */

/* Reveal highlight is hard with pure CSS for complex interactions.
   Focusing on smooth transitions and clear visual hierarchy. */

/* Responsive adjustments */
@media (max-width: 600px) {
    #app-title {
        font-size: 1.5em;
    }
    .top-bar {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        flex-wrap: nowrap;
    }
    .logo-title-container {
        flex-shrink: 0;
    }
    #settings-button {
        flex-shrink: 0;
    }
    #settings-button {
        align-self: flex-start;
    }
    .settings-panel {
        width: 280px;
        left: -300px;
    }
    .settings-panel.open {
        left: 0;
    }
}

.search-source-item .move-buttons {
    display: none;
    flex-direction: column;
    gap: 1px;
    margin-left: 4px;
}

@media (hover: none) and (pointer: coarse) {
    .search-source-item .move-buttons {
        display: flex;
    }
}

.search-source-item .move-buttons .svg-icon-btn {
    padding: 1px;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    line-height: 0;
}

.search-source-item .move-buttons .svg-icon-btn svg {
    width: 12px;
    height: 12px;
    display: block;
    filter: invert(0%);
}
body.dark-theme .search-source-item .move-buttons .svg-icon-btn svg {
    filter: invert(100%);
}

/* Draggable styles for search source items */
.search-source-item.dragging {
    opacity: 0.5;
    background: var(--primary-color-light);
}


/* 移除Search Sources选项hover光效 */
.search-source-item:hover {
    box-shadow: var(--shadow-light-inner);
    background: inherit;
}

/* 修正：favicon不反色 */
.engine-favicon {
    filter: none !important;
}
.search-source-item img.favicon {
    filter: none !important;
}
body.dark-theme .engine-favicon {
    filter: none !important;
}