:root {
    --bg-color: #0f121a;
    --surface-color: #1a1f2e;
    --border-color: #30363d;
    --primary-color: #673DE6;
    --primary-hover: #552cd4;
    --text-main: #ffffff;
    --text-muted: #8b949e;
    --danger: #f85149;
    --success: #238636;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
}

.header {
    background: rgba(26, 31, 46, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 20px;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
}

.logo span {
    color: var(--primary-color);
}

.container {
    max-width: 600px;
    margin: 30px auto;
    padding: 0 15px;
}

.app-card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

/* Tabs */
.tabs {
    display: flex;
    background: var(--bg-color);
    border-radius: 10px;
    padding: 5px;
    margin-bottom: 25px;
}

.tab-btn {
    flex: 1;
    padding: 12px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 15px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

.tab-btn i {
    margin-right: 5px;
}

.tab-btn.active {
    background: var(--surface-color);
    color: var(--primary-color);
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.tab-content.active {
    display: block;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
    text-decoration: none;
}

.btn i { margin-right: 8px; }

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}
.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

.w-100 { width: 100%; }
.mt-15 { margin-top: 15px; }

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-muted);
    font-size: 14px;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 15px;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Scanner */
.scan-options {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    justify-content: center;
}

#reader {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    border: 2px dashed var(--border-color);
}

#reader video {
    border-radius: 12px;
    object-fit: cover;
}

/* Scan Result */
.scan-result {
    margin-top: 20px;
    background: var(--bg-color);
    padding: 15px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.scan-result h3 {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.result-box {
    padding: 12px;
    background: var(--surface-color);
    border-radius: 8px;
    word-break: break-all;
    font-family: monospace;
    font-size: 16px;
    margin-bottom: 15px;
}

.result-actions {
    display: flex;
    gap: 10px;
}

/* Generator Result */
.generate-result {
    margin-top: 25px;
    text-align: center;
}

.code-container {
    background: white;
    padding: 20px;
    border-radius: 12px;
    display: inline-block;
}

.code-container img, .code-container canvas, .code-container svg {
    max-width: 100%;
    display: block;
    margin: 0 auto;
}

/* Mobile fixes */
@media (max-width: 600px) {
    .header { flex-direction: column; gap: 10px; padding: 10px; }
    .global-app-promo { padding: 15px !important; margin: 20px auto !important; }
    .global-app-promo h2 { font-size: 20px !important; }
    .global-app-promo p { font-size: 14px !important; }
}