:root {
  --bg: #0a0a0a;
  --panel: #171717;
  --border: #404040;
  --text: #f5f5f5;
  --muted: #a3a3a3;
  --accent: #86efac;
}

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

html {
    color-scheme: only dark;
}

body {
    font-family: "Minecraftia", ui-sans-serif, system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
    max-width: 400px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

h1 {
    color: var(--text);
    font-size: 18px;
    font-weight: normal;
    margin: 0 0 12px 0;
    text-align: center;
}

label {
    color: var(--muted);
    font-size: 12px;
    margin: 0;
}

input[type="number"] {
    padding: 10px 12px;
    font-size: 14px;
    font-family: "Minecraftia", ui-sans-serif, system-ui, sans-serif;
    border: 1px solid #525252;
    background: var(--bg);
    color: var(--text);
    border-radius: 4px;
    outline: none;
}

input[type="number"].no-spinner::-webkit-outer-spin-button,
input[type="number"].no-spinner::-webkit-inner-spin-button {
    appearance: none;
    margin: 0;
}

input[type="number"].no-spinner {
    appearance: textfield;
}

.result {
    min-height: 40px;
    padding: 12px;
    background: var(--bg);
    border: 1px solid #525252;
    border-radius: 4px;
    font-size: 14px;
    color: var(--muted);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.result-text {
    text-align: center;
    width: 100%;
}

.result.show {
    color: var(--text);
    border-color: var(--accent);
}

.result.error {
    color: #fca5a5;
    border-color: #ef4444;
}

.copy-btn {
    position: absolute;
    right: 8px;
    padding: 6px;
    font-size: 14px;
    color: var(--muted);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: color 0.4s ease, background 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 3px;
    width: 28px;
    height: 28px;
}

.copy-btn:hover:not(:disabled) {
    color: var(--text);
    background: rgba(64, 64, 64, 0.3);
}

.copy-btn:hover:not(:disabled) .tooltip {
    opacity: 1;
    visibility: visible;
}

.copy-btn:focus-visible {
    outline: 1px solid var(--accent);
    outline-offset: 1px;
}

.copy-btn.copied {
    color: var(--accent);
}

.copy-btn.copied:hover {
    color: var(--accent);
}

.copy-btn:disabled {
    color: #525252;
    cursor: not-allowed;
    opacity: 0.5;
}

.copy-btn:disabled .tooltip {
    display: none;
}

.icon-copy {
    position: absolute;
    opacity: 1;
    transition: opacity 0.3s ease, transform 0.3s ease;
    transform: scale(1) rotate(0deg);
    left: 50%;
    top: 50%;
    margin-left: -8px;
    margin-top: -8px;
}

.icon-check {
    position: absolute;
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    transform: scale(0.8) rotate(-10deg);
    left: 50%;
    top: 50%;
    margin-left: -8px;
    margin-top: -8px;
}

.copy-btn.copied .icon-copy {
    opacity: 0;
    transform: scale(0.8) rotate(10deg);
}

.copy-btn.copied .icon-check {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

.tooltip {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--panel);
    color: var(--text);
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 11px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.15s ease, visibility 0.15s ease;
    pointer-events: none;
    border: 1px solid var(--border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.copy-btn:hover:not(:disabled) .tooltip {
    opacity: 1;
    visibility: visible;
}

.copy-btn.copied .tooltip {
    opacity: 0 !important;
    visibility: hidden !important;
}