:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #ec4899;
    --accent: #10b981;
    --background: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --border: rgba(255, 255, 255, 0.1);
    --glass-shadow: (0 8px 32px 0 rgba(0, 0, 0, 0.3));
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--background);
    color: var(--text);
    overflow-x: hidden;
    min-height: 100vh;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Background Blobs */
.blob {
    position: fixed;
    z-index: -1;
    filter: blur(100px);
    opacity: 0.15;
    border-radius: 50%;
}

.blob-1 {
    width: 600px;
    height: 600px;
    background: var(--primary);
    top: -100px;
    left: -200px;
}

.blob-2 {
    width: 500px;
    height: 500px;
    background: var(--secondary);
    bottom: -100px;
    right: -200px;
}

.blob-3 {
    width: 400px;
    height: 400px;
    background: var(--accent);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Navbar */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    margin-bottom: 3rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo-icon {
    color: var(--secondary);
    animation: pulse 2s infinite;
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--card-bg);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot.online { background-color: var(--accent); }
.status-dot.offline { background-color: #ef4444; }
.status-text { font-size: 0.875rem; color: var(--text-muted); }

/* Hero */
.hero {
    text-align: center;
    margin-bottom: 4rem;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.gradient-text {
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
}

/* Cards & Tabs */
.card-container {
    max-width: 600px;
    margin: 0 auto;
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    border-radius: 2rem;
    border: 1px solid var(--border);
    padding: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.tabs {
    display: flex;
    background: rgba(15, 23, 42, 0.5);
    padding: 0.5rem;
    border-radius: 1.25rem;
    margin-bottom: 2rem;
}

.tab-btn {
    flex: 1;
    border: none;
    background: none;
    color: var(--text-muted);
    padding: 0.75rem;
    border-radius: 1rem;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.tab-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.tab-content {
    display: none;
}

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

/* Share Box Components */
.share-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.my-id-container {
    text-align: center;
}

.id-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 0.5rem;
}

code {
    background: rgba(15, 23, 42, 0.8);
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--text);
    border: 1px solid var(--border);
}

.qr-container {
    background: white;
    padding: 1rem;
    border-radius: 1.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

.file-drop-zone {
    width: 100%;
    border: 2px dashed var(--border);
    border-radius: 1.5rem;
    padding: 3rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-drop-zone:hover, .file-drop-zone.dragover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.drop-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1rem;
    color: var(--primary);
    transition: all 0.3s ease;
}

.success-pulse {
    color: var(--accent) !important;
    animation: success-pop 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes success-pop {
    0% { transform: scale(0.5); opacity: 0; }
    80% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}

.browse-link {
    color: var(--primary);
    font-weight: 600;
}

/* Buttons */
.icon-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 0.75rem;
    border-radius: 0.75rem;
    cursor: pointer;
}

.primary-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.secondary-btn {
    background: rgba(15, 23, 42, 0.8);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 1rem 2rem;
    border-radius: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Transfer UI */
.transfer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.transfer-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 2rem;
    padding: 3rem;
    width: 100%;
    max-width: 500px;
    text-align: center;
}

.transfer-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: rgba(15, 23, 42, 0.5);
    padding: 1.5rem;
    border-radius: 1.5rem;
    margin-bottom: 2rem;
    text-align: left;
}

.file-icon-box {
    background: var(--primary);
    padding: 1rem;
    border-radius: 1rem;
    color: white;
}

.file-details p:first-child { font-weight: 600; font-size: 1.1rem; }
.file-details p:last-child { color: var(--text-muted); font-size: 0.9rem; }

.progress-container {
    margin-bottom: 2rem;
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: rgba(15, 23, 42, 0.8);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    width: 0%;
    transition: width 0.3s ease;
}

#progressPercent {
    font-weight: 700;
    font-size: 1.5rem;
}

.cancel-btn {
    background: transparent;
    border: 1px solid #ef4444;
    color: #ef4444;
    padding: 0.5rem 1.5rem;
    border-radius: 0.75rem;
    cursor: pointer;
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--border);
    padding: 3rem;
    border-radius: 2.5rem;
    width: 90%;
    max-width: 450px;
    text-align: center;
}

.modal-icon { width: 64px; height: 64px; color: var(--primary); margin-bottom: 1.5rem; }
.success-icon { width: 64px; height: 64px; color: var(--accent); margin-bottom: 1.5rem; }

.modal h2 { margin-bottom: 1rem; font-size: 2rem; }
.modal-desc { color: var(--text-muted); margin-bottom: 2rem; }

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.hidden { display: none !important; }

/* Footer */
footer {
    margin-top: auto;
    padding: 3rem 0;
    text-align: center;
}

.p2p-methods {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    color: var(--text-muted);
}

.method-icons {
    display: flex;
    justify-content: center;
    gap: 2rem;
    font-size: 1.5rem;
}

.method-icons i { color: var(--text-muted); opacity: 0.6; transition: 0.3s; cursor: help; }
.method-icons i:hover { color: var(--primary); opacity: 1; }

/* Method Icons Styling */
.method-icons { margin-top: 0.5rem; }
.method-icon { padding: 0.75rem; border-radius: 50%; background: rgba(255, 255, 255, 0.05); cursor: pointer; transition: 0.3s; color: var(--text-muted); }
.method-icon.active { color: var(--primary); background: rgba(99, 102, 241, 0.1); box-shadow: 0 0 15px rgba(99, 102, 241, 0.2); }
.footer-note { font-size: 0.75rem; color: var(--text-muted); margin-top: 1.5rem; opacity: 0.6; }

/* Radar Discovery Animation */
.radar-container { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 4rem 0; gap: 2rem; }
.radar {
    width: 60px; height: 60px; background: var(--primary); border-radius: 50%; position: relative;
}
.radar::before, .radar::after {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: var(--primary); border-radius: 50%; opacity: 0.6;
    animation: radar-ping 2s cubic-bezier(0, 0.2, 0.8, 1) infinite;
}
.radar::after { animation-delay: -1s; }

@keyframes radar-ping {
    0% { transform: scale(1); opacity: 0.6; }
    100% { transform: scale(4); opacity: 0; }
}

.secure-icon { color: var(--accent); width: 24px; height: 24px; }

/* Scanner & Toast Styles */
.scanner-content { max-width: 400px; padding: 2rem; position: relative; }
.scanner-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; }
.scanner-header h2 { margin: 0; font-size: 1.5rem; }

.close-btn { background: none; border: none; font-size: 2.5rem; color: var(--text-muted); cursor: pointer; line-height: 1; }
.close-btn:hover { color: white; }

.video-container { width: 100%; aspect-ratio: 1; position: relative; overflow: hidden; border-radius: 1.5rem; background: #000; margin-bottom: 1.5rem; }
#scanVideo { width: 100%; height: 100%; object-fit: cover; }

.scan-frame {
    position: absolute; top: 10%; left: 10%; width: 80%; height: 80%;
    border: 2px solid var(--primary); border-radius: 1rem;
    box-shadow: 0 0 0 4000px rgba(0, 0, 0, 0.4);
    pointer-events: none;
}

.scan-frame::after {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px;
    background: var(--primary); box-shadow: 0 0 15px var(--primary);
    animation: scanLine 2s linear infinite;
}

@keyframes scanLine {
    0% { top: 0; } 100% { top: 100%; }
}

.toast-container { position: fixed; bottom: 2rem; left: 50%; transform: translateX(-50%); z-index: 9999; display: flex; flex-direction: column; gap: 0.75rem; }
.toast { background: var(--card-bg); border: 1px solid var(--border); backdrop-filter: blur(12px); color: var(--text); padding: 1rem 2rem; border-radius: 1rem; box-shadow: 0 10px 25px rgba(0,0,0,0.4); animation: slideUp 0.3s ease; }

@keyframes slideUp { from { transform: translateY(100%); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* Animations Improvement */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.spin { animation: spin 2s linear infinite; }
@keyframes spin { 100% { transform: rotate(360deg); } }

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .card-container { padding: 1.5rem; }
    .app-container { padding: 1rem; }
}