/* Modern Welcome Page Styles */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --dark-gradient: linear-gradient(135deg, #434343 0%, #000000 100%);
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.25);
}

/* Modern Background */
.modern-hero {
    min-height: 100vh;
    background: var(--primary-gradient);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    padding: 2rem 0;
}

.modern-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

/* Glass Morphism Card */
.glass-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-xl);
    padding: 2.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin: 1rem 0;
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

/* Modern Typography */
.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #6c757d;
    margin-bottom: 2rem;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    .hero-subtitle {
        font-size: 1.1rem;
    }
    .glass-card {
        padding: 1.5rem;
        border-radius: 16px;
    }
}

/* Modern Form Styles */
.modern-form-group {
    margin-bottom: 1.5rem;
}

.modern-label {
    font-weight: 600;
    color: #495057;
    margin-bottom: 0.5rem;
    display: block;
    font-size: 0.95rem;
}

.modern-label .optional {
    font-weight: 400;
    color: #6c757d;
    font-size: 0.85rem;
}

.modern-input,
.modern-select {
    width: 100%;
    padding: 0.875rem 1.25rem;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #fff;
}

.modern-input:focus,
.modern-select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

.modern-input::placeholder {
    color: #adb5bd;
}

/* Radio Button Toggle */
.input-toggle {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    background: #f8f9fa;
    padding: 0.5rem;
    border-radius: 12px;
}

.toggle-option {
    flex: 1;
    position: relative;
}

.toggle-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.toggle-option label {
    display: block;
    padding: 0.75rem 1rem;
    text-align: center;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    color: #6c757d;
    background: transparent;
    border: 2px solid transparent;
    font-size: 0.95rem;
}

.toggle-option input[type="radio"]:checked + label {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-md);
    transform: scale(1.02);
}

/* Modern Button */
.btn-modern {
    padding: 0.875rem 2rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-md);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-modern::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-modern:hover::before {
    width: 300px;
    height: 300px;
}

.btn-modern:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-modern:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-modern-secondary {
    background: #6c757d;
}

.btn-modern-secondary:hover {
    background: #5a6268;
}

/* Icon Styles */
.icon-wrapper {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: var(--primary-gradient);
    color: white;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
}

/* Feature Cards */
.feature-card {
    background: white;
    border-radius: 16px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
    box-shadow: var(--shadow-sm);
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: #667eea;
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Error Message */
.error-message {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.error-message::before {
    content: '⚠';
    font-size: 1rem;
}

/* Success Message */
.success-message {
    color: #28a745;
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Loading Spinner */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

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

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* File Input Styling */
.file-input-wrapper {
    position: relative;
    display: inline-block;
    width: 100%;
}

.file-input-wrapper input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.file-input-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.25rem;
    border: 2px dashed #dee2e6;
    border-radius: 12px;
    background: #f8f9fa;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #6c757d;
    min-height: 50px;
}

.file-input-label:hover {
    border-color: #667eea;
    background: #f0f4ff;
    color: #667eea;
}

.file-input-wrapper input[type="file"]:focus + .file-input-label {
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

/* Modern Modal Styles */
.modern-modal .modal-content {
    border-radius: 24px;
    border: none;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.modern-modal .modal-header {
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 1.5rem 2rem;
}

.modern-modal .modal-header .modal-title {
    font-weight: 700;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.modern-modal .modal-header .btn-close {
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.modern-modal .modal-header .btn-close:hover {
    opacity: 1;
}

.modern-modal .modal-body {
    padding: 2rem;
    background: #fff;
}

.modern-modal .modal-footer {
    border: none;
    padding: 1.5rem 2rem;
    background: #f8f9fa;
    gap: 0.75rem;
}

.modern-modal .modal-footer .btn {
    border-radius: 12px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.modern-modal .modal-footer .btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* QR Code Display */
.qr-code-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 16px;
    margin-bottom: 1.5rem;
}

.qr-code-container img {
    max-width: 280px;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    background: white;
    padding: 1rem;
}

/* Link Input Group */
.link-input-group {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.link-input-group .form-control {
    border-radius: 12px;
    border: 2px solid #e9ecef;
    padding: 0.875rem 1.25rem;
    transition: all 0.3s ease;
}

.link-input-group .form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.link-input-group .btn {
    border-radius: 12px;
    padding: 0.875rem 1.5rem;
    font-weight: 600;
    white-space: nowrap;
}

/* Guest Mode Toggle */
.guest-mode-toggle {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.guest-mode-toggle:hover {
    background: #e9ecef;
}

.guest-mode-toggle input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: #667eea;
}

.guest-mode-toggle label {
    margin: 0;
    cursor: pointer;
    font-weight: 500;
    color: #495057;
    flex: 1;
}

/* Responsive Design */
@media (max-width: 768px) {
    .input-toggle {
        flex-direction: column;
    }
    
    .link-input-group {
        flex-direction: column;
    }
    
    .modern-modal .modal-body {
        padding: 1.5rem;
    }
    
    .qr-code-container img {
        max-width: 200px;
    }
}

/* Badge */
.modern-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--success-gradient);
    color: white;
}

/* Spacing Utilities */
.mb-4 {
    margin-bottom: 1.5rem !important;
}

.mt-4 {
    margin-top: 1.5rem !important;
}

.p-4 {
    padding: 1.5rem !important;
}