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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background 0.3s ease;
}

body.dark-theme {
    background: linear-gradient(135deg, #434343 0%, #000000 100%);
}

.top-bar {
    position: absolute;
    top: 0;
    right: 0;
    padding: 20px;
    z-index: 1000;
}

.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.9);
    color: #5f6368;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.2s ease;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: scale(1.05);
}

body.dark-theme .theme-toggle {
    background: rgba(60, 64, 67, 0.9);
    color: #e8eaed;
}

body.dark-theme .theme-toggle:hover {
    background: rgba(60, 64, 67, 1);
}

.theme-toggle .material-symbols-outlined {
    font-size: 24px;
}

.login-container {
    text-align: center;
    padding: 60px 40px;
    max-width: 450px;
    width: 90%;
    margin: auto;
}

.logo-link {
    text-decoration: none;
    display: inline-block;
    transition: opacity 0.2s ease;
}

.logo-link:hover {
    opacity: 0.8;
}

.logo {
    font-size: 72px;
    font-weight: 700;
    color: #202124;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

body.dark-theme .logo {
    color: #e8eaed;
}

.subtitle {
    color: #5f6368;
    margin-bottom: 48px;
    font-size: 15px;
}

body.dark-theme .subtitle {
    color: #9aa0a6;
}

.google-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 14px 32px;
    background: white;
    border: none;
    border-radius: 24px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s ease;
    text-decoration: none;
    color: #3c4043;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.google-btn:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transform: translateY(-1px);
}

body.dark-theme .google-btn {
    background: rgba(255, 255, 255, 0.1);
    color: #e8eaed;
}

body.dark-theme .google-btn:hover {
    background: rgba(255, 255, 255, 0.15);
}

.google-icon {
    width: 18px;
    height: 18px;
}

@media (max-width: 768px) {
    .logo {
        font-size: 56px;
    }
    
    .subtitle {
        font-size: 14px;
    }
    
    .google-btn {
        font-size: 14px;
        padding: 12px 24px;
    }
}