:root {
    --font-primary: 'Outfit', sans-serif;
    
    /* Dark Theme (Default) */
    --bg-gradient-start: #0f0c1b;
    --bg-gradient-end: #05050f;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-border-hover: rgba(255, 255, 255, 0.15);
    --text-primary: #f3f3fb;
    --text-secondary: #a0a0c0;
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --accent-glow: rgba(99, 102, 241, 0.25);
    --card-shadow: rgba(0, 0, 0, 0.3);
    
    /* Decoration circles */
    --circle-1-color: rgba(99, 102, 241, 0.15);
    --circle-2-color: rgba(236, 72, 153, 0.12);
}

.light-theme {
    /* Light Theme */
    --bg-gradient-start: #f8fafc;
    --bg-gradient-end: #e2e8f0;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.06);
    --glass-border-hover: rgba(0, 0, 0, 0.12);
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --primary-color: #4f46e5;
    --primary-hover: #3730a3;
    --accent-glow: rgba(79, 70, 229, 0.15);
    --card-shadow: rgba(148, 163, 184, 0.15);
    
    --circle-1-color: rgba(99, 102, 241, 0.08);
    --circle-2-color: rgba(236, 72, 153, 0.06);
}

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

body {
    font-family: var(--font-primary);
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Background Animated Circles */
.background-decor {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
    pointer-events: none;
}

.blur-circle {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    animation: floatAnimation 12s infinite alternate ease-in-out;
}

.circle-1 {
    width: 35vw;
    height: 35vw;
    background-color: var(--circle-1-color);
    top: -10%;
    left: 10%;
}

.circle-2 {
    width: 40vw;
    height: 40vw;
    background-color: var(--circle-2-color);
    bottom: -10%;
    right: 5%;
    animation-delay: -5s;
}

@keyframes floatAnimation {
    0% {
        transform: translateY(0) scale(1);
    }
    100% {
        transform: translateY(30px) scale(1.1);
    }
}

/* Main Container */
.container {
    width: 90%;
    max-width: 800px;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 40px;
    padding: 20px 0;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.02em;
}

.logo-icon {
    width: 32px;
    height: 32px;
    fill: var(--primary-color);
}

.icon-btn {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 10px;
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.icon-btn:hover {
    border-color: var(--glass-border-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--accent-glow);
}

.theme-icon {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* Hero Section */
.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 20px;
}

h1 {
    font-size: 2.75rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.2;
    background: linear-gradient(to right, var(--text-primary) 30%, var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 550px;
    font-weight: 300;
}

/* Search Box */
.search-box {
    width: 100%;
    display: flex;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 8px 8px 8px 20px;
    border-radius: 50px;
    backdrop-filter: blur(12px);
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px var(--card-shadow);
}

.search-box:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px var(--accent-glow);
}

.search-box input {
    flex: 1;
    min-width: 0;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 1.05rem;
}

.search-box input::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

.search-btn {
    background: var(--primary-color);
    border: none;
    padding: 12px 24px;
    border-radius: 30px;
    color: #ffffff;
    font-family: var(--font-primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-btn:hover {
    background: var(--primary-hover);
    transform: translateX(2px);
}

.arrow-icon {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* Settings Box */
.settings-container {
    width: 100%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    backdrop-filter: blur(12px);
    overflow: hidden;
    transition: all 0.3s ease;
}

.settings-container:hover {
    border-color: var(--glass-border-hover);
}

.settings-summary {
    width: 100%;
    background: transparent;
    border: none;
    display: flex;
    align-items: center;
    padding: 16px 24px;
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    gap: 12px;
}

.settings-icon {
    width: 20px;
    height: 20px;
    fill: var(--text-secondary);
    transition: transform 0.6s ease;
}

.settings-summary:hover .settings-icon {
    transform: rotate(45deg);
}

.chevron-icon {
    width: 20px;
    height: 20px;
    fill: var(--text-secondary);
    margin-left: auto;
    transition: transform 0.3s ease;
}

.settings-container.expanded .chevron-icon {
    transform: rotate(180deg);
}

.settings-content {
    padding: 0 24px 20px 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    border-top: 1px solid var(--glass-border);
    max-height: 400px;
    transition: all 0.3s ease;
    opacity: 1;
}

.settings-content.hidden {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    opacity: 0;
    border-top: none;
    pointer-events: none;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.setting-info {
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.setting-title {
    font-weight: 600;
    font-size: 0.95rem;
}

.setting-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Switch Slider styling */
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.1);
    transition: .4s;
    border-radius: 24px;
    border: 1px solid var(--glass-border);
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: var(--text-secondary);
    transition: .4s;
    border-radius: 50%;
}

.light-theme .slider {
    background-color: rgba(0, 0, 0, 0.05);
}

input:checked + .slider {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(20px);
    background-color: #ffffff;
}

/* Quick Links */
.quick-links {
    width: 100%;
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.quick-links h2 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    font-weight: 600;
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
}

.link-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 15px;
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.link-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 6px 18px var(--accent-glow);
}

/* Footer */
footer {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 20px;
}

/* Responsive adjustment */
@media (max-width: 600px) {
    h1 {
        font-size: 2rem;
    }
    .links-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .search-box {
        padding: 6px 6px 6px 15px;
    }
    .search-btn {
        padding: 10px 18px;
    }
}