:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg-dark: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: rgba(255, 255, 255, 0.1);
    --glass-bg: rgba(255, 255, 255, 0.03);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    overflow-x: hidden;
}

/* Background Animations */
.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    filter: blur(100px);
    opacity: 0.6;
}

.blob {
    position: absolute;
    border-radius: 50%;
}

.blob-1 {
    width: 400px;
    height: 400px;
    background: #6366f1;
    top: -100px;
    left: -100px;
    animation: move 20s infinite alternate;
}

.blob-2 {
    width: 300px;
    height: 300px;
    background: #a855f7;
    bottom: -50px;
    right: -50px;
    animation: move 15s infinite alternate-reverse;
}

.blob-3 {
    width: 250px;
    height: 250px;
    background: #3b82f6;
    top: 40%;
    left: 60%;
    animation: move 25s infinite alternate;
}

@keyframes move {
    from { transform: translate(0, 0) scale(1); }
    to { transform: translate(50px, 50px) scale(1.1); }
}

.container {
    width: 100%;
    max-width: 600px;
    padding: 4rem 1.5rem;
    z-index: 1;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.8s ease-out;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.icon {
    font-size: 2.5rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: fadeInUp 0.8s ease-out;
}

.tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 0.5rem;
    background: var(--glass-bg);
    border-radius: 12px;
}

.tab-btn {
    flex: 1;
    padding: 0.75rem;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.tab-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.4s ease-out;
}

.input-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
}

input, select {
    width: 100%;
    padding: 0.875rem 1rem;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: white;
    font-family: inherit;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
    background: rgba(15, 23, 42, 0.8);
}

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

.input-with-action input {
    flex: 1;
}

.btn-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-main);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-muted);
}

.btn-icon.remove-url:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: #ef4444;
    color: #ef4444;
}

.btn-icon.add-url:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--primary);
    color: var(--primary);
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

.options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.btn-primary {
    width: 100%;
    padding: 1rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 1rem;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.4);
}

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

/* Status UI */
#status-container {
    margin-top: 2rem;
}

.status-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
}

.status-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

#status-message {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.progress-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    width: 0%;
    transition: width 0.5s ease;
    box-shadow: 0 0 10px var(--primary);
}

footer {
    margin-top: 4rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.hidden {
    display: none !important;
}

/* Animations */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }

.loader {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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