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

/* CSS Variables for theming */
:root {
    --bg-gradient: linear-gradient(135deg, #e0f7fa 0%, #ffffff 50%, #b3e5fc 100%);
    --navbar-bg: linear-gradient(135deg, #ffffff 0%, #e1f5fe 100%);
    --navbar-border: rgba(129, 212, 250, 0.4);
    --navbar-shadow: rgba(3, 169, 244, 0.15);
    --card-bg: rgba(255, 255, 255, 0.85);
    --card-bg-hover: rgba(255, 255, 255, 0.95);
    --card-border: rgba(129, 212, 250, 0.25);
    --card-shadow: rgba(3, 169, 244, 0.1);
    --text-primary: #01579b;
    --text-gradient: linear-gradient(135deg, #0288d1 0%, #26c6da 50%, #0288d1 100%);
    --button-bg: linear-gradient(135deg, #03a9f4 0%, #0288d1 100%);
    --button-hover: linear-gradient(135deg, #29b6f6 0%, #039be5 100%);
    --toggle-bg: rgba(3, 169, 244, 0.1);
    --toggle-color: #0288d1;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-gradient: linear-gradient(135deg, #0d1b2a 0%, #1b263b 50%, #0d1b2a 100%);
    --navbar-bg: linear-gradient(135deg, #1b263b 0%, #243447 100%);
    --navbar-border: rgba(100, 180, 255, 0.2);
    --navbar-shadow: rgba(0, 0, 0, 0.3);
    --card-bg: rgba(27, 38, 59, 0.9);
    --card-bg-hover: rgba(36, 52, 71, 0.95);
    --card-border: rgba(100, 180, 255, 0.15);
    --card-shadow: rgba(0, 0, 0, 0.2);
    --text-primary: #e0f7fa;
    --text-gradient: linear-gradient(135deg, #4fc3f7 0%, #81d4fa 50%, #4fc3f7 100%);
    --button-bg: linear-gradient(135deg, #0288d1 0%, #01579b 100%);
    --button-hover: linear-gradient(135deg, #03a9f4 0%, #0288d1 100%);
    --toggle-bg: rgba(79, 195, 247, 0.15);
    --toggle-color: #4fc3f7;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--bg-gradient);
    min-height: 100vh;
    padding: 20px;
    background-attachment: fixed;
    transition: background 0.4s ease;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Navbar Styles */
.navbar {
    background: var(--navbar-bg);
    padding: 18px 50px;
    border-radius: 50px;
    box-shadow: 0 10px 40px var(--navbar-shadow),
                0 0 0 1px rgba(255, 255, 255, 0.2) inset;
    text-align: center;
    margin: 0 auto 35px auto;
    max-width: 600px;
    border: 2px solid var(--navbar-border);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    transition: all 0.4s ease;
}

/* Theme Toggle Button */
.theme-toggle {
    position: absolute;
    right: 20px;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    border: none;
    background: var(--toggle-bg);
    color: var(--toggle-color);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.theme-toggle:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.navbar::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% { left: -100%; }
    50%, 100% { left: 100%; }
}

.navbar h1 {
    font-family: 'Orbitron', sans-serif;
    color: transparent;
    background: var(--text-gradient);
    background-clip: text;
    -webkit-background-clip: text;
    font-size: 2.2rem;
    font-weight: 900;
    letter-spacing: 4px;
    text-transform: uppercase;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.navbar h1 i {
    background: var(--text-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-size: 1.8rem;
}

/* Links Container */
.links {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--card-bg);
    backdrop-filter: blur(15px);
    padding: 18px 28px;
    margin: 18px auto;
    max-width: 600px;
    border-radius: 24px;
    box-shadow: 0 8px 32px var(--card-shadow),
                0 0 0 1px rgba(255, 255, 255, 0.1) inset;
    border: 1px solid var(--card-border);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.links:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 15px 40px var(--card-shadow),
                0 0 0 1px rgba(255, 255, 255, 0.2) inset;
    border-color: var(--card-border);
    background: var(--card-bg-hover);
}

/* Logo and Text in one line */
.link-content {
    display: flex;
    align-items: center;
    gap: 18px;
}

.logo {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    font-size: 1.5rem;
    color: white;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.links:hover .logo {
    transform: rotate(-5deg) scale(1.1);
}

/* Social Media Icon Colors */
.logo.snapchat {
    background: linear-gradient(135deg, #FFFC00 0%, #FFE600 100%);
    color: #000000;
}

.logo.instagram {
    background: linear-gradient(135deg, #833AB4 0%, #FD1D1D 50%, #FCAF45 100%);
}

.logo.facebook {
    background: linear-gradient(135deg, #1877F2 0%, #0D65D9 100%);
}

.logo.github {
    background: linear-gradient(135deg, #333 0%, #24292e 100%);
}

.logo.x-twitter {
    background: linear-gradient(135deg, #000 0%, #14171A 100%);
}

.logo.linkedin {
    background: linear-gradient(135deg, #0A66C2 0%, #004182 100%);
}

.logo.telegram {
    background: linear-gradient(135deg, #0088cc 0%, #0077B5 100%);
}

.links h2 {
    color: var(--text-primary);
    font-family: 'Poppins', sans-serif;
    font-size: 1.15rem;
    font-weight: 600;
    white-space: nowrap;
    letter-spacing: 0.5px;
    transition: color 0.4s ease;
}

/* Button Styles */
.button {
    display: inline-block;
    padding: 12px 32px;
    background: var(--button-bg);
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    box-shadow: 0 6px 20px rgba(3, 169, 244, 0.35);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: none;
    position: relative;
    overflow: hidden;
}

.button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.button:hover::before {
    left: 100%;
}

.button:hover {
    background: var(--button-hover);
    box-shadow: 0 8px 25px rgba(3, 169, 244, 0.5);
    transform: translateY(-2px) scale(1.05);
}

.button:active {
    transform: scale(0.98);
    box-shadow: 0 4px 15px rgba(3, 169, 244, 0.4);
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 15px;
    }
    
    .navbar {
        padding: 14px 20px;
        border-radius: 30px;
        max-width: 100%;
    }
    
    .navbar h1 {
        font-size: 1.6rem;
        letter-spacing: 2px;
    }
    
    .theme-toggle {
        width: 38px;
        height: 38px;
        font-size: 1rem;
        right: 15px;
    }
    
    .links {
        padding: 15px 22px;
        margin: 14px auto;
    }
    
    .link-content {
        gap: 14px;
    }
    
    .logo {
        width: 44px;
        height: 44px;
        font-size: 1.3rem;
    }
    
    .links h2 {
        font-size: 1.05rem;
    }
    
    .button {
        padding: 10px 24px;
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }
    
    .navbar {
        padding: 12px 15px;
        border-radius: 25px;
        margin-bottom: 20px;
        max-width: 100%;
    }
    
    .navbar h1 {
        font-size: 1.3rem;
        letter-spacing: 1px;
        gap: 8px;
    }
    
    .navbar h1 i {
        font-size: 1.2rem;
    }
    
    .theme-toggle {
        width: 34px;
        height: 34px;
        font-size: 0.9rem;
        right: 12px;
    }
    
    .links {
        padding: 14px 16px;
        margin: 12px auto;
        border-radius: 18px;
    }
    
    .link-content {
        gap: 12px;
    }
    
    .logo {
        width: 40px;
        height: 40px;
        font-size: 1.15rem;
        border-radius: 10px;
    }
    
    .links h2 {
        font-size: 0.95rem;
    }
    
    .button {
        padding: 9px 18px;
        font-size: 0.75rem;
        border-radius: 20px;
        letter-spacing: 0.5px;
    }
}

@media (max-width: 360px) {
    .navbar {
        padding: 10px 12px;
        border-radius: 20px;
    }
    
    .navbar h1 {
        font-size: 1.1rem;
        letter-spacing: 0.5px;
        gap: 6px;
    }
    
    .navbar h1 i {
        font-size: 1rem;
    }
    
    .theme-toggle {
        width: 30px;
        height: 30px;
        font-size: 0.8rem;
        right: 10px;
    }
    
    .links {
        padding: 12px 14px;
    }
    
    .logo {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }
    
    .links h2 {
        font-size: 0.85rem;
    }
    
    .button {
        padding: 8px 14px;
        font-size: 0.7rem;
    }
}