body {
    font-family: 'Poppins', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-color: #0f172a;
    background-image: 
        radial-gradient(at 0% 0%, rgba(30, 64, 175, 0.4) 0, transparent 50%), 
        radial-gradient(at 100% 0%, rgba(139, 92, 246, 0.4) 0, transparent 50%), 
        radial-gradient(at 100% 100%, rgba(219, 39, 119, 0.4) 0, transparent 50%), 
        radial-gradient(at 0% 100%, rgba(14, 165, 233, 0.4) 0, transparent 50%);
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 1000 1000' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.05;
    pointer-events: none;
}

.container {
    text-align: center;
    padding: 3rem;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 24px;
    box-shadow: 
        0 20px 50px rgba(0, 0, 0, 0.3),
        inset 0 1px 1px rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    max-width: 500px;
    width: 90%;
}

h1 {
    color: white;
    font-weight: 700;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.subtitle {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.controls {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 1rem;
}

#settings-toggle {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s;
}

#settings-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(45deg);
}

#settings-panel {
    background: rgba(0, 0, 0, 0.2);
    padding: 1.5rem;
    border-radius: 16px;
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.setting-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: white;
    font-size: 0.9rem;
}

.setting-group input {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    color: white;
    padding: 4px 8px;
    width: 60px;
    text-align: center;
}

.action-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 2rem;
}

#generator-btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

#copy-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    width: 52px;
    height: 52px;
    cursor: pointer;
    font-size: 1.4rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

#copy-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

#copy-btn.hidden {
    display: none;
}

#generator-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
    background: linear-gradient(135deg, #4f46e5 0%, #9333ea 100%);
}

#generator-btn:active {
    transform: translateY(0);
}

#history-container {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

#history-container.hidden {
    display: none;
}

h3 {
    color: white;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

#history-list {
    list-style: none;
    padding: 0;
    max-height: 200px;
    overflow-y: auto;
}

.history-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.75rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
    display: flex;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
}

#clear-history {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    font-size: 0.8rem;
    margin-top: 1rem;
    text-decoration: underline;
}

#clear-history:hover {
    color: rgba(255, 255, 255, 0.7);
}