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

:root {
    /* Colors */
    --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, #1a1a2e 0%, #16213e 100%);

    --bg-primary: #0f0f1e;
    --bg-secondary: #1a1a2e;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.05);

    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.5);

    --border-color: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);

    --accent-purple: #667eea;
    --accent-pink: #f093fb;
    --accent-cyan: #4facfe;
    --accent-green: #5eead4;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(102, 126, 234, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Hero Section */


/* Generator Section */
.generator-section {
    padding: var(--spacing-xl) 0;
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.generator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
    animation: fadeIn 0.8s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.card-header {
    margin-bottom: var(--spacing-lg);
}

.card-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.card-header p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* Form Styles */
.event-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 500;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.form-group label svg {
    opacity: 0.7;
}

.form-group input,
.form-group textarea {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.875rem var(--spacing-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9375rem;
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-purple);
    background: rgba(102, 126, 234, 0.1);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-tertiary);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.checkbox-group {
    margin-top: var(--spacing-xs);
}

.checkbox-label {
    display: flex !important;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.checkbox-label input[type="checkbox"]:checked+.checkbox-custom {
    background: var(--primary-gradient);
    border-color: var(--accent-purple);
}

.checkbox-label input[type="checkbox"]:checked+.checkbox-custom::after {
    content: '';
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 1rem var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
}

.btn:hover::before {
    transform: translateX(100%);
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(102, 126, 234, 0.5);
}

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

/* Results */
.results-empty {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

.empty-state {
    text-align: center;
    color: var(--text-tertiary);
}

.empty-state svg {
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.empty-state p {
    font-size: 0.9375rem;
    max-width: 300px;
    margin: 0 auto;
}

.results-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.calendar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.calendar-link:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--border-hover);
    transform: translateX(4px);
}

.calendar-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 1.5rem;
}

.calendar-link[data-provider="google"] .calendar-icon {
    background: linear-gradient(135deg, #4285f4 0%, #34a853 100%);
}

.calendar-link[data-provider="outlook"] .calendar-icon {
    background: linear-gradient(135deg, #0078d4 0%, #00bcf2 100%);
}

.calendar-link[data-provider="office365"] .calendar-icon {
    background: linear-gradient(135deg, #d83b01 0%, #ea4300 100%);
}

.calendar-link[data-provider="yahoo"] .calendar-icon {
    background: linear-gradient(135deg, #6001d2 0%, #720fe1 100%);
}

.calendar-link[data-provider="apple"] .calendar-icon {
    background: linear-gradient(135deg, #fc3d39 0%, #fe5f55 100%);
}

.calendar-info {
    flex: 1;
}

.calendar-name {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 2px;
}

.calendar-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.copy-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

/* Features Section */


/* Footer */


/* Toast Notification */
.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    transform: translateY(150%);
    transition: transform var(--transition-base);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.toast.show {
    transform: translateY(0);
}

.toast svg {
    color: var(--accent-green);
}

/* Responsive Design */
@media (max-width: 768px) {
    .generator-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .hero-stats {
        gap: var(--spacing-lg);
    }

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

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .card {
        padding: var(--spacing-lg);
    }

    .hero {
        padding: var(--spacing-xl) 0;
        min-height: 500px;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection */
::selection {
    background: var(--accent-purple);
    color: white;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}

/* Select Dropdown Styles */
.form-group select {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.875rem var(--spacing-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9375rem;
    transition: all var(--transition-base);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ffffff' fill-opacity='0.5' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 3rem;
}

.form-group select:focus {
    outline: none;
    border-color: var(--accent-purple);
    background: rgba(102, 126, 234, 0.1);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.5rem;
}

/* Share Buttons */
.share-section {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.share-header {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.share-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.share-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
}

.share-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.share-btn.email {
    color: #ea4335;
    border-color: rgba(234, 67, 53, 0.3);
}

.share-btn.whatsapp {
    color: #25d366;
    border-color: rgba(37, 211, 102, 0.3);
}

.share-btn.twitter {
    color: #1da1f2;
    border-color: rgba(29, 161, 242, 0.3);
}

.share-btn.linkedin {
    color: #0077b5;
    border-color: rgba(0, 119, 181, 0.3);
}

/* Action Buttons Container */
.action-buttons {
    display: flex;
    gap: var(--spacing-xs);
    flex-shrink: 0;
}

.action-btn {
    padding: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.action-btn svg {
    width: 16px;
    height: 16px;
}

/* QR Code Modal */
.qr-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(10px);
}

.qr-modal.show {
    display: flex;
}

.qr-modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 400px;
    width: 90%;
    position: relative;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.qr-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.qr-modal-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.qr-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.qr-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.qr-code-container {
    display: flex;
    justify-content: center;
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.qr-code-container canvas {
    max-width: 100%;
    height: auto !important;
}

.qr-download-btn {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--primary-gradient);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.qr-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(102, 126, 234, 0.5);
}