@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Playfair+Display:wght@700;800;900&family=JetBrains+Mono:wght@400;500;600;700&family=Space+Grotesk:wght@300;400;500;600;700&family=DM+Sans:wght@400;500;600;700&display=swap');


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

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: #000000;
    min-height: 100vh;
    padding: 30px 20px;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(0deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(255,255,255,0.05) 0%, transparent 50%);
    pointer-events: none;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.header {
    text-align: center;
    color: white;
    margin-bottom: 50px;
    margin-top: 20px;
    animation: fadeInDown 1s ease-out;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.header h1 {
    font-family: 'Playfair Display', serif;
    font-size: 5em;
    margin-bottom: 16px;
    font-weight: 900;
    color: #ffffff;
    letter-spacing: -3px;
    line-height: 1;
}

.header p {
    font-size: 0.75em;
    color: rgba(255, 255, 255, 0.35);
    font-weight: 300;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-family: 'DM Sans', sans-serif;
}

.search-box {
    background: #ffffff;
    border: 1px solid #1a1a1a;
    border-radius: 0;
    padding: 45px;
    margin-bottom: 35px;
    animation: fadeInUp 1s ease-out 0.2s backwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.input-group {
    display: flex;
    gap: 0;
}

input[type="text"] {
    flex: 1;
    padding: 18px 24px;
    font-size: 1.05em;
    border: 2px solid #000000;
    border-right: none;
    border-radius: 0;
    outline: none;
    transition: all 0.3s ease;
    background: #ffffff;
    font-weight: 400;
    font-family: 'DM Sans', sans-serif;
}

input[type="text"]:focus {
    border-color: #000000;
    background: #fafafa;
}

input[type="text"]::placeholder {
    color: #aaaaaa;
    font-weight: 400;
    font-family: 'Space Grotesk', sans-serif;
}

button {
    padding: 18px 40px;
    font-size: 0.9em;
    font-weight: 600;
    color: #ffffff;
    background: #000000;
    border: 2px solid #000000;
    border-radius: 0;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-family: 'Space Grotesk', sans-serif;
}

button:hover {
    background: #ffffff;
    color: #000000;
    border-color: #000000;
}

button:active {
    transform: scale(0.98);
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

.results {
    background: #ffffff;
    border: 1px solid #1a1a1a;
    border-radius: 0;
    padding: 45px;
    display: none;
}

.results.show {
    display: block;
    animation: fadeInUp 0.6s ease-out;
}

.results h2 {
    color: #000000;
    margin-bottom: 35px;
    font-size: 1.3em;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-family: 'Space Grotesk', sans-serif;
}

.no-results {
    text-align: center;
    padding: 70px 40px;
    border: 2px dashed #cccccc;
    background: #fafafa;
}

.no-results-title {
    font-size: 1.4em;
    font-weight: 600;
    color: #000000;
    margin-bottom: 10px;
    font-family: 'Space Grotesk', sans-serif;
}

.no-results-text {
    font-size: 0.95em;
    color: #666666;
    font-weight: 400;
    line-height: 1.7;
    font-family: 'DM Sans', sans-serif;
}

.result-item {
    background: #ffffff;
    border: 2px solid #e5e5e5;
    border-left: 8px solid #000000;
    padding: 32px;
    margin-bottom: 25px;
    border-radius: 0;
    transition: all 0.3s ease;
}

.result-item:hover {
    border-color: #000000;
    border-left-width: 10px;
    transform: translateX(4px);
}

.result-number {
    font-weight: 600;
    color: #000000;
    font-size: 0.7em;
    margin-bottom: 14px;
    text-transform: uppercase;
    letter-spacing: 3px;
    font-family: 'Space Grotesk', sans-serif;
}

.symbols {
    font-size: 2.5em;
    font-weight: 700;
    color: #000000;
    margin-bottom: 16px;
    font-family: 'JetBrains Mono', 'SF Mono', 'Monaco', monospace;
    letter-spacing: 4px;
}

.names {
    color: #333333;
    font-size: 1.05em;
    margin-bottom: 10px;
    font-weight: 400;
    font-family: 'DM Sans', sans-serif;
}

.atomic-numbers {
    color: #666666;
    font-size: 0.85em;
    margin-bottom: 14px;
    font-weight: 400;
    font-family: 'Space Grotesk', sans-serif;
}

.key {
    background: #000000;
    color: #ffffff;
    padding: 10px 18px;
    border-radius: 0;
    display: inline-block;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9em;
    letter-spacing: 2px;
    border: 2px solid #000000;
    transition: all 0.3s ease;
}

.key:hover {
    background: #ffffff;
    color: #000000;
}

.element-boxes {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 20px;
}

.element-box {
    background: #ffffff;
    border: 2px solid #000000;
    border-radius: 0;
    padding: 16px 12px;
    text-align: center;
    min-width: 85px;
    transition: all 0.3s ease;
    position: relative;
}

.element-box:hover {
    background: #000000;
}

.element-box:hover .element-symbol,
.element-box:hover .element-number,
.element-box:hover .element-name {
    color: #ffffff;
}

.element-symbol {
    font-size: 1.9em;
    font-weight: 700;
    color: #000000;
    margin: 8px 0;
    font-family: 'JetBrains Mono', 'SF Mono', monospace;
    transition: color 0.3s ease;
}

.element-number {
    font-size: 0.65em;
    color: #666666;
    font-weight: 600;
    margin-bottom: 5px;
    font-family: 'Space Grotesk', sans-serif;
    transition: color 0.3s ease;
}

.element-name {
    font-size: 0.6em;
    color: #666666;
    font-weight: 500;
    text-transform: uppercase;
    margin-top: 7px;
    letter-spacing: 1px;
    font-family: 'Space Grotesk', sans-serif;
    transition: color 0.3s ease;
}

@media (max-width: 768px) {
    body {
        padding: 20px 15px;
    }

    .theme-switcher {
        margin-top: 25px;
        gap: 8px;
        padding: 10px;
    }

    .theme-circle {
        width: 32px;
        height: 32px;
    }

    .header {
        margin-top: 10px;
        margin-bottom: 35px;
    }

    .header h1 {
        font-size: 3.2em;
        letter-spacing: -2px;
    }

    .header p {
        font-size: 0.7em;
        letter-spacing: 3px;
    }

    .search-box {
        padding: 32px 28px;
    }

    .input-group {
        flex-direction: column;
        gap: 0;
    }

    input[type="text"] {
        border-right: 2px solid #000000;
        border-bottom: none;
        font-size: 1em;
        padding: 16px 20px;
    }

    button {
        width: 100%;
        padding: 16px 24px;
        font-size: 0.85em;
        letter-spacing: 2.5px;
    }

    .results {
        padding: 32px 28px;
    }

    .results h2 {
        font-size: 1.15em;
        margin-bottom: 28px;
    }

    .result-item {
        padding: 28px;
        margin-bottom: 20px;
    }

    .result-number {
        font-size: 0.65em;
    }

    .symbols {
        font-size: 2em;
        letter-spacing: 3px;
    }

    .names {
        font-size: 1em;
    }

    .atomic-numbers {
        font-size: 0.8em;
    }

    .element-boxes {
        gap: 12px;
        margin-top: 18px;
    }

    .element-box {
        min-width: 78px;
        padding: 14px 10px;
    }

    .element-symbol {
        font-size: 1.7em;
    }

    .element-number {
        font-size: 0.6em;
    }

    .element-name {
        font-size: 0.55em;
    }

    .no-results {
        padding: 55px 30px;
    }

    .no-results-title {
        font-size: 1.2em;
    }

    .no-results-text {
        font-size: 0.9em;
    }
}

@media (max-width: 480px) {
    body {
        padding: 15px 12px;
    }

    .theme-switcher {
        margin-top: 20px;
        gap: 8px;
        padding: 8px;
    }

    .theme-circle {
        width: 28px;
        height: 28px;
        border-width: 2px;
    }

    .header {
        margin-top: 5px;
        margin-bottom: 30px;
    }

    .header h1 {
        font-size: 2.5em;
        letter-spacing: -1.5px;
    }

    .header p {
        font-size: 0.65em;
        letter-spacing: 2.5px;
    }

    .search-box {
        padding: 28px 24px;
    }

    .results {
        padding: 28px 24px;
    }

    input[type="text"] {
        font-size: 0.95em;
        padding: 15px 18px;
    }

    button {
        padding: 15px 20px;
        font-size: 0.8em;
        letter-spacing: 2px;
    }

    .results h2 {
        font-size: 1.05em;
        margin-bottom: 25px;
    }

    .result-item {
        padding: 24px;
        margin-bottom: 18px;
    }

    .result-number {
        font-size: 0.6em;
        margin-bottom: 12px;
    }

    .symbols {
        font-size: 1.7em;
        letter-spacing: 2px;
        margin-bottom: 14px;
    }

    .names {
        font-size: 0.95em;
    }

    .atomic-numbers {
        font-size: 0.75em;
    }

    .key {
        font-size: 0.85em;
        padding: 9px 16px;
    }

    .element-boxes {
        gap: 10px;
        margin-top: 16px;
    }

    .element-box {
        min-width: 70px;
        padding: 12px 8px;
    }

    .element-symbol {
        font-size: 1.5em;
    }

    .element-number {
        font-size: 0.55em;
    }

    .element-name {
        font-size: 0.5em;
    }

    .no-results {
        padding: 45px 25px;
    }

    .no-results-title {
        font-size: 1.1em;
    }

    .no-results-text {
        font-size: 0.85em;
    }
}