:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --border: #334155;
    --success: #10b981;
}

* {
    box-sizing: border-box;
}

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;
    margin: 0;
    position: relative;
    overflow: hidden;
}

.background-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, rgba(15,23,42,0) 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
    pointer-events: none;
}

.container {
    width: 100%;
    max-width: 600px;
    padding: 2rem;
    z-index: 1;
}

.header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: inline-block;
    background: linear-gradient(135deg, #60a5fa, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h1 {
    margin: 0 0 0.5rem 0;
    font-size: 2rem;
    font-weight: 700;
}

p {
    color: var(--text-muted);
    line-height: 1.5;
    margin: 0;
}

.card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
}

.input-wrapper {
    display: flex;
    gap: 0.5rem;
}

input[type="url"], input[type="text"] {
    flex: 1;
    padding: 0.875rem 1rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    background-color: rgba(15, 23, 42, 0.6);
    color: var(--text-main);
    font-size: 1rem;
    outline: none;
    transition: all 0.2s ease;
    font-family: monospace;
}

input[type="url"]:focus, input[type="text"]:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

button {
    border: none;
    padding: 0.875rem 1.5rem;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: rgba(255,255,255,0.1);
    color: var(--text-main);
}

.btn-secondary:hover {
    background-color: rgba(255,255,255,0.2);
}

.hidden {
    display: none !important;
}

.result-container {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    text-align: center;
    animation: slideUp 0.3s ease forwards;
}

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

.success-icon {
    width: 40px;
    height: 40px;
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 1rem auto;
}

h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1.25rem;
}

.result-box {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

#loading {
    margin-top: 1.5rem;
    text-align: center;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}