@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
    --sidebar-width: 240px;
    --sidebar-collapsed-width: 80px;
    --header-height: 80px;
    --card-bg: rgba(255, 255, 255, 0.6);
    --card-hover-bg: rgba(255, 255, 255, 0.8);
    --text-color: #333;
    --text-color-light: #666;
    --border-radius: 12px;
    --transition-speed: 0.3s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    background-color: #f0f2f5;
    transition: background-color var(--transition-speed);
}

body.dark-theme {
    background-color: #121212;
    background-image: none;
    --card-bg: rgba(28, 28, 28, 0.7);
    --card-hover-bg: rgba(44, 44, 44, 0.9);
    --text-color: #ffffff;
    --text-color-light: #e0e0e0;
}

body.blue-theme {
    background-color: #e0f7fa;
    background-image: none;
    --card-bg: rgba(255, 255, 255, 0.7);
    --card-hover-bg: rgba(224, 247, 250, 1);
    --text-color: #00796b;
    --text-color-light: #004d40;
}

body.purple-theme {
    background-color: #f3e5f5;
    background-image: none;
    --card-bg: rgba(255, 255, 255, 0.7);
    --card-hover-bg: rgba(243, 229, 245, 1);
    --text-color: #6a1b9a;
    --text-color-light: #8e44ad;
}

body.green-theme {
    background-color: #e8f5e9;
    background-image: none;
    --card-bg: rgba(255, 255, 255, 0.7);
    --card-hover-bg: rgba(232, 245, 233, 1);
    --text-color: #2e7d32;
    --text-color-light: #1b5e20;
}

body.gradient1-theme {
    background-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --card-bg: rgba(255, 255, 255, 0.2);
    --card-hover-bg: rgba(255, 255, 255, 0.4);
    --text-color: #ffffff;
    --text-color-light: #e0e0e0;
}

body.gradient2-theme {
    background-image: linear-gradient(135deg, #ff7e5f 0%, #feb47b 100%);
    --card-bg: rgba(255, 255, 255, 0.25);
    --card-hover-bg: rgba(255, 255, 255, 0.45);
    --text-color: #d35400;
    --text-color-light: #e67e22;
}

body.gradient3-theme {
    background-image: linear-gradient(135deg, #abecd6 0%, #fbed96 100%);
    --card-bg: rgba(255, 255, 255, 0.3);
    --card-hover-bg: rgba(255, 255, 255, 0.5);
    --text-color: #333;
    --text-color-light: #555;
}

.container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: rgba(255, 255, 255, 0.1);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-right: 1px solid rgba(255, 255, 255, 0.2);
    padding: 20px;
    display: flex;
    flex-direction: column;
    transition: width var(--transition-speed);
}

body:not([class*="gradient"]) .sidebar {
    background: rgba(255, 255, 255, 0.3);
}

.sidebar .logo {
    text-align: center;
    margin-bottom: 40px;
}

.sidebar .logo img {
    width: 100%;
    height: 60px;
    object-fit: contain;
}

.menu {
    flex-grow: 1;
}

/* Settings Menu */
.settings-menu {
    position: fixed;
    bottom: 80px;
    left: 20px;
    background: var(--card-bg);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 15px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    z-index: 1001;
    opacity: 0;
    transform: translateY(20px);
    visibility: hidden;
    transition: opacity var(--transition-speed), transform var(--transition-speed), visibility var(--transition-speed);
}

.settings-menu.active {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
}

.settings-menu h4 {
    margin: 0 0 10px 0;
    color: var(--text-color);
    font-weight: 500;
}

.theme-options {
    display: flex;
    gap: 10px;
}

.theme-option {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color var(--transition-speed);
}

.theme-option:hover {
    border-color: var(--text-color);
}

.theme-option[data-theme="default"] { background-color: #f0f2f5; }
.theme-option[data-theme="dark"] { background-color: #121212; }
.theme-option[data-theme="blue"] { background-color: #e0f7fa; }
.theme-option[data-theme="purple"] { background-color: #f3e5f5; }
.theme-option[data-theme="green"] { background-color: #e8f5e9; }
.theme-option[data-theme="gradient1"] { background-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.theme-option[data-theme="gradient2"] { background-image: linear-gradient(135deg, #ff7e5f 0%, #feb47b 100%); }
.theme-option[data-theme="gradient3"] { background-image: linear-gradient(135deg, #abecd6 0%, #fbed96 100%); }

.menu-item {
    display: flex;
    align-items: center;
    padding: 15px;
    margin-bottom: 10px;
    border-radius: var(--border-radius);
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: background-color var(--transition-speed);
}

.menu-item:hover, .menu-item.active {
    background-color: rgba(255, 255, 255, 0.5);
}

.menu-item .icon {
    height: 24px;
    width: 24px;
    margin-right: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.menu-item .icon img {
    max-height: 100%;
    width: auto;
    max-width: 4em;
}


.sidebar-footer {
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

/* Main Content */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.top-bar {
    padding: 1rem;
    background-color: rgba(255, 255, 255, 0.1);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    margin-bottom: 1rem;
}

.search-bar {
    display: flex;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.7);
    border-radius: 25px;
    padding: 0.5rem 1rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    max-width: 600px; /* Or any other width you prefer */
    margin: 0 auto;
}

.search-engine-wrapper {
    display: flex;
    align-items: center;
    margin-right: 0.5rem;
}

.search-engine-logo {
    width: 24px;
    height: 24px;
    margin-right: 8px;
    object-fit: contain;
}

.search-bar select {
    background: transparent;
    border: none;
    color: var(--text-color);
    font-size: 1rem;
    padding: 0.25rem;
}

.search-bar select option {
    background-color: var(--background-dark);
    color: var(--text-color);
}

.search-bar input {
    flex-grow: 1;
    background: transparent;
    border: none;
    color: var(--text-color);
    font-size: 1rem;
    padding: 0.5rem;
}

.search-bar input::placeholder {
    color: var(--text-color-light);
}

/* Specific theme overrides for search bar text color */
body.gradient1-theme .search-bar select,
body.gradient1-theme .search-bar input {
    color: #764ba2; /* Purple from gradient */
}

body.gradient1-theme .search-bar input::placeholder {
    color: #a27fc9; /* Lighter purple for placeholder */
}

body.gradient1-theme .search-bar select option {
    background-color: #ffffff;
    color: #000000;
}

body.dark-theme .search-bar select,
body.dark-theme .search-bar input {
    color: #000000;
}

body.dark-theme .search-bar select option {
    background-color: #ffffff;
    color: #000000;
}

body.dark-theme .search-bar input::placeholder {
    color: #555555;
}

body.dark-theme .card h3 {
    color: #ffffff;
}

.content-wrapper {
    flex-grow: 1;
    position: relative;
    overflow-y: auto;
    padding: 20px 40px;
}

.content-section {
    display: none;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
    animation: fadeIn 0.5s ease;
}

.content-section.active {
    display: grid;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Tablet and larger phones */
@media (max-width: 1024px) {
    .content-section {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 15px;
    }
    .content-wrapper {
        padding: 20px;
    }
    .sidebar {
        width: var(--sidebar-collapsed-width);
    }
    .sidebar .logo,
    .menu-item span:not(.icon) {
        display: none;
    }
    .main-content {
        width: calc(100% - var(--sidebar-collapsed-width));
    }
    .menu-item .icon {
        margin-right: 0;
    }
    .menu-item {
        justify-content: center;
    }
}


@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }

    .main-content {
        width: 100%;
        padding-bottom: 80px; /* Adjust for bottom navbar */
    }

    .top-bar {
        margin-bottom: 0;
        border-radius: 0;
    }

    .search-bar {
        max-width: 100%;
        padding: 0.5rem 0.75rem;
    }

    .content-wrapper {
        padding: 15px;
    }

    .content-section {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 15px;
    }


    .sidebar {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        height: auto;
        flex-direction: row;
        justify-content: space-around;
        padding: 5px 0;
        border-top: 1px solid rgba(255, 255, 255, 0.2);
        border-right: none;
        z-index: 1000;
    }

    .sidebar-footer {
        display: none;
    }


    .sidebar .logo {
        display: none;
    }

    .menu {
        display: flex;
        justify-content: space-around;
        width: 100%;
    }

    .menu-item {
        flex-direction: column;
        justify-content: center;
        height: 100%;
        margin-bottom: 0;
        padding: 5px 0;
    }

    .menu-item .icon {
        margin-right: 0;
        margin-bottom: 4px;
        font-size: 18px;
    }

    .menu-item span:not(.icon) {
        font-size: 12px;
    }


    .settings-menu {
        bottom: 70px; /* Adjust based on new navbar height */
        left: 50%;
        transform: translateX(-50%);
    }

    .settings-menu.active {
        transform: translateX(-50%) translateY(0);
    }
}

@media (max-width: 480px) {
    .content-section {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 10px;
    }

    .card h3 {
        font-size: 14px;
    }

    .card p {
        font-size: 11px;
    }

    .card .card-icon {
        font-size: 32px;
    }
}

/* Card Styles */
.card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 20px;
    text-align: center;
    transition: all var(--transition-speed);
    cursor: pointer;
    -webkit-backdrop-filter: blur(5px);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.card:hover {
    transform: translateY(-5px);
    background: var(--card-hover-bg);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.card .card-icon {
    height: 48px;
    margin: 0 auto 15px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card .card-icon img {
    max-height: 100%;
    max-width: 100%;
    object-fit: contain;
}

.card-icon-fallback {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: bold;
    color: #fff;
    background: linear-gradient(135deg, #a8b2c5, #8e9eab);
    border-radius: 50%;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.2);
}

.card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 5px;
}

.card p {
    font-size: 12px;
    color: var(--text-color-light);
}

/* Scrollbar */
.content-wrapper::-webkit-scrollbar {
    width: 8px;
}

.content-wrapper::-webkit-scrollbar-track {
    background: transparent;
}

.content-wrapper::-webkit-scrollbar-thumb {
    background: rgba(0,0,0,0.2);
    border-radius: 4px;
}

.content-wrapper::-webkit-scrollbar-thumb:hover {
    background: rgba(0,0,0,0.4);
}