:root {
    --bg-color: #f8f9fa;
    --text-color: #212529;
    --card-bg: rgba(255, 255, 255, 0.85);
    --card-hover: rgba(255, 255, 255, 0.95);
    --input-bg: #ffffff;
    --input-border: #dfe1e5;
    --modal-bg: #ffffff;
    --border-color: #dee2e6;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --accent: #007bff;
    --accent-hover: #0056b3;
}

[data-theme="dark"] {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --card-bg: rgba(30, 30, 30, 0.85);
    --card-hover: rgba(40, 40, 40, 0.95);
    --input-bg: #2c2c2c;
    --input-border: #3e3e3e;
    --modal-bg: #1e1e1e;
    --border-color: #444;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    --accent: #4dabf7;
    --accent-hover: #339af0;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

#bg-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: -2;
    transition: opacity 0.5s;
}

#overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.1); /* Slight overlay for readability */
    z-index: -1;
    pointer-events: none;
}

[data-theme="dark"] #overlay {
    background: rgba(0,0,0,0.4);
}

.main-container {
    width: 100%;
    max-width: 800px;
    padding: 20px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
}

/* Clock */
.clock {
    font-size: 4rem;
    font-weight: 300;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
    opacity: 0.9;
}

/* Search Box */
.search-box {
    width: 100%;
    max-width: 600px;
    position: relative;
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-radius: 24px;
    box-shadow: none;
    padding: 0 15px;
    height: 48px;
    transition: background-color 0.2s, box-shadow 0.2s, transform 0.2s;
    border: 1px solid transparent;
}

[data-theme="dark"] .search-box {
    background: rgba(40, 40, 40, 0.8);
}

.search-box:hover, .search-box:focus-within {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

[data-theme="dark"] .search-box:hover, [data-theme="dark"] .search-box:focus-within {
    background: rgba(50, 50, 50, 0.95);
}

.search-engine-icon {
    width: 24px;
    height: 24px;
    cursor: pointer;
    margin-right: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.search-engine-icon:hover {
    opacity: 1;
}

.search-engine-icon img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
}

#search-input {
    flex: 1;
    border: none;
    background: transparent;
    height: 100%;
    font-size: 16px;
    color: var(--text-color);
    outline: none;
}

#search-submit {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color);
    opacity: 0.5;
    padding: 5px;
    display: flex;
    align-items: center;
    transition: opacity 0.2s;
}

#search-submit:hover {
    opacity: 1;
}

/* Engine Dropdown */
.engine-dropdown {
    position: absolute;
    top: 55px;
    left: 0;
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    width: 150px;
    display: none;
    flex-direction: column;
    overflow: hidden;
    backdrop-filter: blur(10px);
    z-index: 100;
}

.engine-dropdown.show {
    display: flex;
}

.engine-option {
    padding: 10px 15px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.2s;
}

.engine-option:hover {
    background: rgba(128,128,128,0.1);
}

/* Shortcuts */
.shortcuts-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    width: 100%;
}

.shortcut-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 90px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
    text-decoration: none;
    color: var(--text-color);
    padding: 10px;
}

.shortcut-item:hover {
    background: var(--card-bg);
    border-radius: 12px;
    backdrop-filter: blur(5px);
}

.shortcut-icon {
    width: 48px;
    height: 48px;
    background: var(--card-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    overflow: hidden;
}

.shortcut-icon img {
    width: 32px;
    height: 32px;
}

.shortcut-title {
    font-size: 12px;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
    opacity: 0.9;
}

/* Settings Toggle */
.settings-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    cursor: pointer;
    opacity: 0.5;
    transition: opacity 0.2s, transform 0.2s;
    z-index: 10;
}

.settings-toggle:hover {
    opacity: 1;
    transform: rotate(45deg);
}

/* Modal */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 999;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-backdrop.show {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -40%) scale(0.95);
    background: var(--modal-bg);
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    width: 90%;
    max-width: 450px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.3s;
    max-height: 90vh;
    overflow-y: auto;
    padding: 10px;
}

.modal.show {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    transform: translate(-50%, -50%) scale(1);
}

.modal-header {
    padding: 15px 20px 5px;
    border-bottom: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
}

.modal-body {
    padding: 10px 20px 10px;
}

.modal-body .setting-group:last-child {
    margin-bottom: 0;
}

.modal-footer {
    padding: 0 20px 20px;
    border-top: none;
    text-align: right;
}

.close-modal, .close-shortcut-modal {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-color);
}

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

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

.setting-group input, .setting-group select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    background: var(--input-bg);
    color: var(--text-color);
    outline: none;
}

.setting-group input:focus {
    border-color: var(--accent);
}

.btn-save {
    background: var(--accent);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
}

.btn-save:hover {
    background: var(--accent-hover);
}

.btn-primary {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
}

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

/* Shortcut Editor List */
.shortcut-edit-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px;
    border-bottom: 1px solid var(--border-color);
}

.shortcut-edit-item:last-child {
    border-bottom: none;
}

.shortcut-edit-actions button {
    margin-left: 5px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color);
    opacity: 0.6;
}

.shortcut-edit-actions button:hover {
    opacity: 1;
}

.shortcut-edit-actions button.delete-btn {
    color: #ff4d4f;
}

/* Mobile responsive */
@media (max-width: 480px) {
    .clock {
        font-size: 3rem;
    }
    
    .search-box {
        max-width: 100%;
    }
}