/* CSS Design Variables */
:root {
    --neon-green: #39ff14;
    --neon-green-glow: rgba(57, 255, 20, 0.45);
    --gradient-blue-start: #00c6ff;
    --gradient-blue-end: #0072ff;
    
    /* Dark Theme */
    --dark-bg: #0b0f19;
    --dark-surface: #111827;
    --dark-card: rgba(17, 24, 39, 0.7);
    --dark-border: rgba(255, 255, 255, 0.08);
    --dark-text: #f3f4f6;
    --dark-text-muted: #9ca3af;
    
    /* Light Theme */
    --light-bg: #f3f4f6;
    --light-surface: #ffffff;
    --light-card: rgba(255, 255, 255, 0.75);
    --light-border: rgba(0, 0, 0, 0.08);
    --light-text: #111827;
    --light-text-muted: #6b7280;
    
    --glass-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Body Styles */
body {
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    transition: background-color 0.4s ease, color 0.4s ease;
}

[data-bs-theme="dark"] {
    background-color: var(--dark-bg);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(0, 198, 255, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(57, 255, 20, 0.04) 0%, transparent 40%);
    color: var(--dark-text);
}

[data-bs-theme="light"] {
    background-color: var(--light-bg);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(0, 198, 255, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(57, 255, 20, 0.02) 0%, transparent 40%);
    color: var(--light-text);
}

/* Typography */
h1, h2, h3, h4, h5, h6, .brand-text {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
}

.gradient-text {
    background: linear-gradient(135deg, var(--gradient-blue-start), var(--gradient-blue-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Navbar Upgrades */
.glass-navbar {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 0.8rem 0;
    transition: var(--transition-smooth);
}

[data-bs-theme="dark"] .glass-navbar {
    background: rgba(11, 15, 25, 0.8);
    border-bottom: 1px solid var(--dark-border);
}

[data-bs-theme="light"] .glass-navbar {
    background: rgba(255, 255, 255, 0.85);
    border-bottom: 1px solid var(--light-border);
}

.brand-icon-wrapper {
    background: rgba(57, 255, 20, 0.1);
    border: 1px solid rgba(57, 255, 20, 0.3);
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(57, 255, 20, 0.15);
}

.brand-text {
    font-size: 1.4rem;
    letter-spacing: -0.5px;
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1.2rem !important;
    border-radius: 10px;
    transition: var(--transition-smooth);
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Theme Toggle Button */
.btn-theme-toggle {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--dark-border);
    background: rgba(255, 255, 255, 0.03);
    color: var(--dark-text);
    transition: var(--transition-smooth);
}

[data-bs-theme="light"] .btn-theme-toggle {
    border-color: var(--light-border);
    background: rgba(0, 0, 0, 0.03);
    color: var(--light-text);
}

.btn-theme-toggle:hover {
    transform: rotate(15deg) scale(1.05);
    background: rgba(57, 255, 20, 0.1);
    border-color: var(--neon-green);
    color: var(--neon-green);
}

/* Glassmorphism Cards */
.glass-card {
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border-radius: 24px;
    transition: var(--transition-smooth);
}

[data-bs-theme="dark"] .glass-card {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    box-shadow: var(--glass-shadow);
}

[data-bs-theme="light"] .glass-card {
    background: var(--light-card);
    border: 1px solid var(--light-border);
    box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.06);
}

/* Hero Section */
.hero-badge {
    background: rgba(0, 198, 255, 0.08);
    border: 1px solid rgba(0, 198, 255, 0.2);
    color: #00c6ff;
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 1.5rem;
}

/* QR Type Navigation Tabs - Mobile Swipe-Scrollable */
.qr-type-tabs-scroll-container {
    position: relative;
    margin-bottom: 1rem;
}
.qr-type-tabs {
    display: flex;
    flex-wrap: nowrap !important;
    gap: 0.5rem;
    padding: 0.5rem;
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.15);
    overflow-x: auto;
    white-space: nowrap;
    scrollbar-width: none; /* Firefox */
    -webkit-overflow-scrolling: touch;
}
.qr-type-tabs::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera */
}
[data-bs-theme="light"] .qr-type-tabs {
    background: rgba(0, 0, 0, 0.03);
}
.qr-type-btn {
    border: none;
    background: transparent;
    padding: 0.5rem 1rem;
    border-radius: 10px;
    font-weight: 500;
    color: inherit;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex: 0 0 auto;
    font-size: 0.85rem;
}
.qr-type-btn.active {
    background: linear-gradient(135deg, var(--gradient-blue-start), var(--gradient-blue-end));
    color: #ffffff !important;
    box-shadow: 0 8px 16px -4px rgba(0, 114, 255, 0.4);
}
.qr-type-btn:hover:not(.active) {
    background: rgba(255, 255, 255, 0.05);
}

/* Make tabs wrap on desktop and tablets */
@media (min-width: 768px) {
    .qr-type-tabs {
        flex-wrap: wrap !important;
        white-space: normal !important;
        overflow-x: visible !important;
    }
    .qr-type-btn {
        flex: 0 1 auto !important;
    }
}

/* Mobile-only Premium Glass Card styling - acts as plain block on Desktop */
.mobile-glass-card {
    background: transparent;
    border: none;
    padding: 0;
    box-shadow: none;
}

/* Desktop Styles */
@media (min-width: 992px) {
    #generator-section .desktop-header {
        display: flex !important;
    }
}

/* Mobile Vertical Sequential Layout Optimization */
@media (max-width: 991.98px) {
    /* Prevent body horizontal scroll */
    html, body {
        overflow-x: hidden !important;
        max-width: 100vw !important;
    }
    
    /* Constrain the grid items to prevent overflow stretching */
    .grid-type, .grid-preview, .grid-details, .grid-branding {
        min-width: 0 !important;
        max-width: 100% !important;
        width: 100% !important;
    }
    
    /* Swipe-scrollable tabs layout locks on mobile */
    .qr-type-tabs-scroll-container {
        width: 100% !important;
        max-width: 100% !important;
        overflow: hidden !important;
    }
    .qr-type-tabs {
        width: 100% !important;
        max-width: 100% !important;
        overflow-x: auto !important;
        flex-wrap: nowrap !important;
    }
    
    /* Enable layout reordering using display: contents */
    .main-form-col, .main-preview-col, #desktop-form-card {
        display: contents !important;
    }
    
    #generator-section .desktop-header {
        display: none !important;
    }
    
    #generator-section h1 {
        font-size: 1.25rem !important;
        margin-bottom: 0.15rem !important;
    }
    #generator-section p.text-muted {
        font-size: 0.75rem !important;
        margin-bottom: 0.5rem !important;
    }
    /* Set vertical sequential stacking order */
    #workspace-grid {
        display: grid !important;
        grid-template-columns: 1fr !important;
        grid-template-areas:
            "type"
            "preview"
            "details"
            "branding" !important;
        gap: 0.65rem !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
    }
    #workspace-grid > [class*="col-"] {
        margin-bottom: 0 !important;
        min-width: 0 !important;
    }
    #workspace-grid > * {
        min-width: 0 !important;
    }
    
    /* Map components to their respective grid areas on mobile */
    .grid-type {
        grid-area: type !important;
    }
    .grid-preview {
        grid-area: preview !important;
    }
    .grid-details {
        grid-area: details !important;
    }
    .grid-branding {
        grid-area: branding !important;
    }
    
    .step-preview-header {
        justify-content: flex-start !important;
        margin-bottom: 0.5rem !important;
    }
    
    .step-preview-title {
        font-size: 0.85rem !important;
        font-weight: 600 !important;
        text-transform: none !important;
        letter-spacing: normal !important;
        color: #ffffff !important;
    }
    
    /* Make each step look like a beautiful compact glass card on mobile */
    .mobile-glass-card {
        background: var(--dark-card) !important;
        border: 1px solid var(--dark-border) !important;
        box-shadow: var(--glass-shadow) !important;
        backdrop-filter: blur(25px) !important;
        -webkit-backdrop-filter: blur(25px) !important;
        border-radius: 12px !important;
        padding: 0.65rem !important;
        margin-bottom: 0 !important; /* Managed by grid gap */
    }
    
    [data-bs-theme="light"] .mobile-glass-card {
        background: var(--light-card) !important;
        border: 1px solid var(--light-border) !important;
        box-shadow: 0 10px 20px -5px rgba(0, 0, 0, 0.05) !important;
    }
    
    #generator-section .glass-card {
        padding: 0.5rem !important;
        border-radius: 12px !important;
    }
    #generator-section h5, #generator-section h6 {
        font-size: 0.85rem !important;
        margin-bottom: 0.35rem !important;
    }
    #generator-section .step-num-badge {
        width: 20px !important;
        height: 20px !important;
        font-size: 0.7rem !important;
    }
    /* Sleek size for preview on mobile */
    #generator-section .qr-preview-device {
        width: 100% !important;
        max-width: 150px !important;
        padding: 0.3rem !important;
        border-radius: 10px !important;
        margin: 0 auto !important;
    }
    #generator-section .qr-preview-screen {
        width: 100% !important;
        min-height: 130px !important;
        padding: 0.3rem !important;
        border-radius: 8px !important;
        background: #ffffff !important;
    }
    #generator-section .qr-result-img {
        max-height: 120px !important;
    }
    /* Side-by-side action buttons on mobile since we have full width */
    #generator-section .preview-actions-wrapper {
        display: flex !important;
        flex-direction: row !important;
        gap: 0.4rem !important;
        padding: 0 !important;
    }
    #generator-section .preview-actions-wrapper .btn-text {
        display: inline !important;
    }
    #generator-section .preview-actions-wrapper a, 
    #generator-section .preview-actions-wrapper button {
        margin-bottom: 0 !important;
        padding: 0.35rem 0.5rem !important;
        font-size: 0.75rem !important;
        border-radius: 6px !important;
        height: 32px !important;
        display: inline-flex !important;
        align-items: center !important;
        justify-content: center !important;
        flex: 1 1 50% !important;
    }
    #generator-section .sticky-lg-top {
        position: static !important;
    }
    #generator-section .border-top {
        display: flex !important; /* Enable sharing options at bottom of preview card */
        margin-top: 0.3rem !important;
        padding-top: 0.3rem !important;
    }
    #generator-section .form-label {
        font-size: 0.7rem !important;
        margin-bottom: 0.15rem !important;
    }
    #generator-section .form-control, #generator-section .form-select {
        height: 26px !important;
        padding: 0.15rem 0.4rem !important;
        font-size: 0.75rem !important;
        border-radius: 5px !important;
    }
    #generator-section textarea.form-control {
        height: 38px !important;
    }
    #generator-section input[type="file"] {
        max-width: 100% !important;
        width: 100% !important;
        overflow: hidden !important;
    }
    #generator-section input[type="file"]::file-selector-button {
        padding: 0.1rem 0.25rem !important;
        font-size: 0.7rem !important;
        border-radius: 3px !important;
        margin-right: 0.15rem !important;
    }
    #generator-section .color-picker-wrapper {
        height: 26px !important;
        padding: 0.1rem 0.25rem !important;
        border-radius: 5px !important;
    }
    #generator-section .color-input-custom {
        width: 18px !important;
        height: 18px !important;
        border-radius: 4px !important;
    }
    #generator-section .color-hex-label {
        font-size: 0.7rem !important;
        width: 45px !important;
    }
}

/* Step Badges */
.step-num-badge {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--gradient-blue-start), var(--gradient-blue-end));
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: #fff;
    box-shadow: 0 0 10px rgba(0, 114, 255, 0.4);
}

.step-preview-header {
    display: flex !important;
    justify-content: center !important;
}

.step-preview-title {
    font-size: 0.8rem !important;
    font-weight: 700 !important;
    text-transform: uppercase !important;
    letter-spacing: 0.05em !important;
    color: rgba(255, 255, 255, 0.5) !important;
    margin: 0 !important;
}

/* Typography Line Clamping and Utilities */
.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.hover-neon-green:hover {
    color: var(--neon-green) !important;
}
.transition-smooth {
    transition: var(--transition-smooth);
}
.blog-body-content p {
    margin-bottom: 1.25rem;
}
.blog-body-content h4 {
    color: #ffffff;
    margin-top: 1.75rem;
    margin-bottom: 1rem;
}

/* Custom Styled Inputs - Compact */
.form-label {
    font-weight: 500;
    font-size: 0.8rem;
    margin-bottom: 0.25rem;
}

.form-control, .form-select {
    border-radius: 8px;
    padding: 0.35rem 0.75rem;
    transition: var(--transition-smooth);
    background-color: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--dark-border);
    font-size: 0.85rem;
    height: 32px;
}

[data-bs-theme="light"] .form-control, [data-bs-theme="light"] .form-select {
    background-color: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--light-border);
}

.form-control:focus, .form-select:focus {
    box-shadow: 0 0 0 3px rgba(0, 198, 255, 0.15);
    border-color: #00c6ff;
    background-color: rgba(0, 0, 0, 0.3);
}

[data-bs-theme="light"] .form-control:focus, [data-bs-theme="light"] .form-select:focus {
    background-color: #ffffff;
}

textarea.form-control {
    height: auto !important;
}

/* Color Pickers Customization - Compact */
.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    background: rgba(0,0,0,0.15);
    padding: 0.25rem 0.5rem;
    border-radius: 8px;
    border: 1px solid var(--dark-border);
    height: 32px;
}

[data-bs-theme="light"] .color-picker-wrapper {
    background: rgba(255,255,255,0.9);
    border-color: var(--light-border);
}

.color-input-custom {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 22px;
    height: 22px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    background: none;
    padding: 0;
}

.color-input-custom::-webkit-color-swatch {
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 6px;
}

.color-hex-label {
    font-size: 0.8rem;
    font-family: monospace;
    font-weight: 600;
    text-transform: uppercase;
    color: inherit;
    border: none;
    background: transparent;
    width: 60px;
}

/* Action Buttons - Compact */
.btn-primary-gradient {
    background: linear-gradient(135deg, var(--gradient-blue-start) 0%, var(--gradient-blue-end) 100%);
    border: none;
    color: #ffffff;
    font-weight: 600;
    border-radius: 10px;
    padding: 0.6rem 1.5rem;
    box-shadow: 0 8px 16px -4px rgba(0, 114, 255, 0.3);
    transition: var(--transition-smooth);
}

.btn-primary-gradient:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px -4px rgba(0, 114, 255, 0.45);
    color: #ffffff;
}

.btn-neon-glow {
    background: transparent;
    color: var(--neon-green);
    border: 2px solid var(--neon-green);
    font-weight: 600;
    border-radius: 10px;
    padding: 0.6rem 1.5rem;
    transition: var(--transition-smooth);
}

.btn-neon-glow:hover {
    background: var(--neon-green);
    color: #000000;
    box-shadow: 0 0 20px var(--neon-green-glow);
    transform: translateY(-2px);
}

/* Premium QR Preview Mockup - Compact */
.qr-preview-device {
    background: radial-gradient(circle at 50% 0%, rgba(255,255,255,0.05) 0%, transparent 70%), rgba(255, 255, 255, 0.02);
    border: 1px solid var(--dark-border);
    border-radius: 20px;
    padding: 1rem;
    width: 100%;
    max-width: 250px;
    box-shadow: 0 15px 30px -10px rgba(0,0,0,0.5);
    position: relative;
    overflow: hidden;
}

[data-bs-theme="light"] .qr-preview-device {
    background: radial-gradient(circle at 50% 0%, rgba(0,0,0,0.02) 0%, transparent 70%), rgba(255, 255, 255, 0.8);
    border: 1px solid var(--light-border);
    box-shadow: 0 15px 30px -10px rgba(0,0,0,0.08);
}

.qr-preview-screen {
    background: #ffffff;
    border-radius: 12px;
    padding: 0.75rem;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 180px;
    box-shadow: inset 0 0 15px rgba(0,0,0,0.05);
    position: relative;
}

.qr-result-img {
    max-width: 100%;
    max-height: 160px;
    height: auto;
    border-radius: 6px;
}

/* Feature & Stat Cards */
.feature-card {
    transition: var(--transition-smooth);
    border: 1px solid var(--dark-border);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: #00c6ff;
    box-shadow: 0 15px 30px -10px rgba(0, 198, 255, 0.15);
}

/* FAQ Accordion */
.accordion-item {
    background: transparent !important;
    border: 1px solid var(--dark-border) !important;
    border-radius: 14px !important;
    margin-bottom: 0.75rem;
    overflow: hidden;
}

[data-bs-theme="light"] .accordion-item {
    border: 1px solid var(--light-border) !important;
}

.accordion-button {
    background: transparent !important;
    color: inherit !important;
    font-weight: 600;
    padding: 1.2rem;
    box-shadow: none !important;
}

.accordion-button:not(.collapsed) {
    color: #00c6ff !important;
    border-bottom: 1px solid var(--dark-border);
}

[data-bs-theme="light"] .accordion-button:not(.collapsed) {
    border-bottom: 1px solid var(--light-border);
}

/* Loading Overlay inside Screen */
.qr-loader-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.92);
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 20px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    z-index: 10;
}

.qr-loader-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Toast Customization */
.glass-toast {
    backdrop-filter: blur(10px);
    background: rgba(17, 24, 39, 0.9) !important;
    border: 1px solid var(--neon-green) !important;
    color: #ffffff;
    border-radius: 12px;
}

/* Footer Section */
.glass-footer {
    border-top: 1px solid var(--dark-border);
    background: rgba(11, 15, 25, 0.4);
}

[data-bs-theme="light"] .glass-footer {
    border-top: 1px solid var(--light-border);
    background: rgba(255, 255, 255, 0.4);
}