:root {
    --bg-color: #050505;
    --card-bg: rgba(20, 20, 23, 0.7);
    --border-color: rgba(255, 255, 255, 0.1);
    --primary-color: #5865F2; /* Discord-ish Blurple, modern and fits the use case */
    --primary-hover: #4752C4;
    --text-main: #FFFFFF;
    --text-muted: #9CA3AF;
    --input-bg: rgba(0, 0, 0, 0.3);
    --glow-color-1: rgba(88, 101, 242, 0.15);
    --glow-color-2: rgba(235, 69, 158, 0.1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden; /* For background effects */
    position: relative;
}

/* Background "Illuminated" Effects */
.background-effects {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.8;
}

.glow-1 {
    width: 600px;
    height: 600px;
    background: var(--glow-color-1);
    top: -150px;
    left: -150px;
    animation: float 10s infinite ease-in-out;
}

.glow-2 {
    width: 500px;
    height: 500px;
    background: var(--glow-color-2);
    bottom: -100px;
    right: -100px;
    animation: float 12s infinite ease-in-out reverse;
}

@keyframes float {
    0% { transform: translate(0, 0); }
    50% { transform: translate(30px, 50px); }
    100% { transform: translate(0, 0); }
}

/* Main Container */
.container {
    background: var(--card-bg);
    width: 100%;
    max-width: 420px;
    padding: 2.5rem;
    border-radius: 24px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(20px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    text-align: center;
    position: relative;
    margin: 20px;
}

.header {
    margin-bottom: 2rem;
}

.icon {
    width: 64px;
    height: 64px;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 10px rgba(88, 101, 242, 0.5));
}

h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.swap-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    cursor: pointer;
    margin-top: 1rem;
    transition: all 0.2s ease;
}

.swap-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
    transform: translateY(-1px);
}

/* Inputs */
.input-group {
    display: flex;
    gap: 12px;
    margin-bottom: 1.5rem;
}

.input-wrapper {
    flex: 1;
}

input[type="text"] {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-main);
    font-family: 'Inter', monospace; /* Monospace for code usually looks better */
    font-size: 1rem;
    outline: none;
    transition: all 0.2s ease;
}

input[type="text"]:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(88, 101, 242, 0.2);
}

.picker-wrapper {
    width: 50px;
    flex-shrink: 0;
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: var(--input-bg);
}

input[type="color"] {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    cursor: pointer;
    border: none;
    padding: 0;
    background: none;
}

/* Button */
.primary-btn {
    width: 100%;
    padding: 0.875rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(88, 101, 242, 0.3);
}

.primary-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(88, 101, 242, 0.4);
}

.primary-btn:active {
    transform: translateY(0);
}

/* Result Card */
.result-card {
    margin-top: 1.5rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: slideUp 0.3s ease-out;
}

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

.color-preview {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: #000;
    border: 1px solid var(--border-color);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.2);
}

.result-content {
    flex: 1;
    text-align: left;
}

.result-content label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 2px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.value-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

#resultValue {
    font-family: 'Inter', monospace;
    font-size: 1.125rem;
    font-weight: 600;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    color: var(--text-main);
    background: rgba(255,255,255,0.05);
}

/* Footer */
.footer {
    margin-top: 2rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.footer a {
    color: var(--text-main);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.footer a:hover {
    opacity: 1;
    text-decoration: underline;
}

/* Tooltip/Copied Feedback */
.tooltip {
    position: absolute;
    background: #10B981; /* Success Green */
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    pointer-events: none;
    animation: fadeOut 1.5s forwards;
}

@keyframes fadeOut {
    0% { opacity: 1; transform: translateY(0); }
    70% { opacity: 1; transform: translateY(-5px); }
    100% { opacity: 0; transform: translateY(-10px); }
}