//@import url('https://fonts.googleapis.com/css2?family=Roboto+Condensed:ital,wght@0,100..900;1,100..900&family=Roboto:ital,wght@0,100..900;1,100..900&display=swap');
//
//body {
//    display: flex;
//    flex-direction: column;
//    font-family: "Roboto", sans-serif;
//    font-optical-sizing: auto;
//    font-weight: 300;
//    font-style: normal;
//    font-variation-settings: "wdth" 100;
//    color: #e3e3e3 !important;
//}
//
//.container {
//    height: 100vh;
//}
//
//.header-stack {
//    display: flex;
//    justify-content: center;
//    flex-direction: column;
//    align-items: center;
//    font-family: "Roboto Condensed", sans-serif;
//    font-optical-sizing: auto;
//    font-weight: 600;
//    font-style: normal;
//    text-transform: uppercase;
//
//    p:first-child {
//        margin: 0;
//        margin-top: 40px;
//        margin-bottom: 30px;
//        font-weight: 400;
//    }
//
//    img {
//        height: 50px;
//    }
//}
//
//.header-input {
//    display: flex;
//    gap: .5rem;
//    align-items: center;
//    flex-wrap: wrap;
//
//    .header-input__text-input {
//        flex: 1;
//        min-width: 220px;
//        padding: .5rem;
//        border-radius: .5rem;
//        border: 1px solid #444;
//        background: #1a1a1a;
//        color: #e3e3e3;
//    }
//
//    .header-input__label {
//        display: flex;
//        align-items: center;
//        gap: .25rem;
//    }
//
//    .header-input__select {
//        padding: .5rem;
//        border-radius: .5rem;
//        border: 1px solid #444;
//        background: #1a1a1a;
//        color: #e3e3e3;
//    }
//}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #1a1a1a;
    color: #e0e0e0;
    line-height: 1.6;
    min-height: 100vh;
}

/* Header */
.app-header {
    background: linear-gradient(135deg, #2c2c2c 0%, #1a1a1a 100%);
    border-bottom: 1px solid #3a3a3a;
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.app-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.app-title {
    font-size: 1.5rem;
    font-weight: 300;
    color: #ffffff;
}

.header-nav {
    display: flex;
    gap: 10px;
}

.nav-btn {
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid #3a3a3a;
    border-radius: 8px;
    color: #9ca3af;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.9rem;
    cursor: pointer;
}

.nav-btn:hover {
    background: rgba(96, 165, 250, 0.1);
    border-color: #60a5fa;
    color: #60a5fa;
}

/* Main Container */
.app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 30px;
}

/* Hero Banner */
.app-hero {
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.1) 0%, rgba(34, 197, 94, 0.1) 100%);
    border: 1px solid #3a3a3a;
    border-radius: 16px;
    padding: 40px;
    margin-bottom: 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.app-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(96, 165, 250, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 70% 50%, rgba(34, 197, 94, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 2rem;
    font-weight: 300;
    color: #ffffff;
    margin-bottom: 10px;
    letter-spacing: -0.5px;
}

.hero-subtitle {
    color: #9ca3af;
    font-size: 1.1rem;
}

.tech-badges {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 25px;
    flex-wrap: wrap;
}

.tech-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(42, 42, 42, 0.8);
    border: 1px solid #3a3a3a;
    border-radius: 20px;
    font-size: 0.9rem;
}

.badge-icon {
    font-size: 20px;
}

/* Main Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 30px;
    margin-bottom: 40px;
}

/* Input Section */
.input-section {
    background: rgba(42, 42, 42, 0.6);
    border: 1px solid #3a3a3a;
    border-radius: 16px;
    padding: 30px;
}

.section-header {
    margin-bottom: 25px;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 400;
    color: #ffffff;
    margin-bottom: 5px;
}

.section-description {
    color: #9ca3af;
    font-size: 0.9rem;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 5px;
    margin-bottom: 25px;
    background: rgba(26, 26, 26, 0.8);
    padding: 5px;
    border-radius: 10px;
}

.tab {
    flex: 1;
    padding: 10px 20px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: #9ca3af;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.tab.active {
    background: rgba(96, 165, 250, 0.2);
    color: #60a5fa;
}

.tab:hover:not(.active) {
    background: rgba(255, 255, 255, 0.05);
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    color: #d1d5db;
    font-size: 0.9rem;
    font-weight: 500;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(26, 26, 26, 0.8);
    border: 1px solid #3a3a3a;
    border-radius: 8px;
    color: #e0e0e0;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: #60a5fa;
    background: rgba(26, 26, 26, 0.95);
}

.form-input::placeholder {
    color: #6b7280;
}

textarea.form-input {
    min-height: 120px;
    resize: vertical;
    font-family: inherit;
}

/* Select Dropdown */
.select-wrapper {
    position: relative;
}

select.form-input {
    appearance: none;
    cursor: pointer;
    padding-right: 40px;
}

.select-wrapper::after {
    content: '▼';
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #9ca3af;
    pointer-events: none;
    font-size: 0.8rem;
}

/* Options Grid */
.options-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 20px;
}

/* Checkbox Group */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: rgba(26, 26, 26, 0.8);
    border: 1px solid #3a3a3a;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.checkbox-group:hover {
    border-color: #60a5fa;
    background: rgba(96, 165, 250, 0.05);
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: #60a5fa;
}

.checkbox-label {
    color: #d1d5db;
    font-size: 0.9rem;
    cursor: pointer;
}

/* Color Picker */
.color-inputs {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 10px;
    align-items: center;
}

.color-preview {
    width: 80px;
    height: 45px;
    border-radius: 8px;
    border: 1px solid #3a3a3a;
    cursor: pointer;
    transition: all 0.3s ease;
}

.color-preview:hover {
    border-color: #60a5fa;
}

input[type="color"] {
    opacity: 0;
    position: absolute;
    pointer-events: none;
}

/* Action Button */
.action-button {
    width: 100%;
    padding: 14px 24px;
    background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
    border: none;
    border-radius: 8px;
    color: #ffffff;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.action-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(96, 165, 250, 0.3);
}

.action-button.secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid #3a3a3a;
    margin-top: 10px;
}

.action-button.secondary:hover {
    background: rgba(34, 197, 94, 0.2);
    border-color: #22c55e;
}

/* Preview Section */
.preview-section {
    background: rgba(42, 42, 42, 0.6);
    border: 1px solid #3a3a3a;
    border-radius: 16px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.preview-card {
    background: rgba(26, 26, 26, 0.8);
    border: 1px solid #3a3a3a;
    border-radius: 12px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 350px;
}

.qr-placeholder {
    width: 220px;
    height: 220px;
    background: #ffffff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.qr-pattern {
    width: 180px;
    height: 180px;
    background: repeating-linear-gradient(
                    0deg,
                    #000 0px,
                    #000 20px,
                    transparent 20px,
                    transparent 40px
    ),
    repeating-linear-gradient(
                    90deg,
                    #000 0px,
                    #000 20px,
                    transparent 20px,
                    transparent 40px
    );
}

.download-info {
    margin-top: 20px;
    text-align: center;
    color: #9ca3af;
    font-size: 0.85rem;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.stat-card {
    background: rgba(26, 26, 26, 0.8);
    border: 1px solid #3a3a3a;
    border-radius: 10px;
    padding: 15px;
    text-align: center;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 300;
    color: #60a5fa;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.8rem;
    color: #9ca3af;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Features Section */
.features-section {
    background: rgba(42, 42, 42, 0.6);
    border: 1px solid #3a3a3a;
    border-radius: 16px;
    padding: 40px;
    margin-top: 30px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.feature-card {
    display: flex;
    gap: 15px;
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.2) 0%, rgba(96, 165, 250, 0.05) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.feature-content h3 {
    font-size: 1.1rem;
    font-weight: 500;
    color: #ffffff;
    margin-bottom: 5px;
}

.feature-content p {
    font-size: 0.9rem;
    color: #9ca3af;
    line-height: 1.6;
}

/* Footer */
.app-footer {
    background: #0f0f0f;
    border-top: 1px solid #2a2a2a;
    padding: 30px 0;
    margin-top: 60px;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-text {
    color: #6b7280;
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-link {
    color: #9ca3af;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: #60a5fa;
}

/* Responsive */
@media (max-width: 1024px) {
    .content-grid {
        grid-template-columns: 1fr;
    }

    .preview-section {
        order: -1;
    }
}

@media (max-width: 768px) {
    .app-container {
        padding: 20px 15px;
    }

    .header-nav {
        display: none;
    }

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

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }
}