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

:root {
    --primary-color: #7868E6;
    --secondary-color: #B8B5FF;
    --accent-color: #EDEEF7;
    --light-blue: #E4FBFF;
    --coral: #FFB4B4;
    --white: #ffffff;
    --dark-text: #2c2c2c;
    --gray-text: #666666;
    --success: #4CAF50;
    --warning: #FF9800;
    --error: #f44336;
    --border-radius: 12px;
    --shadow: 0 4px 15px rgba(120, 104, 230, 0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--light-blue) 100%);
    color: var(--dark-text);
    line-height: 1.6;
    min-height: 100vh;
    padding-bottom: 80px;
}

/* Header Styles */
.app-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 1rem;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

#app-title {
    font-size: 1.5rem;
    font-weight: 700;
}

.language-toggle {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.language-toggle:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Main Content */
.app-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

.app-section {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.app-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Section Headers */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.section-header h2 {
    font-size: 1.8rem;
    color: var(--primary-color);
    font-weight: 700;
}

.add-button, .cta-button {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.add-button:hover, .cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(120, 104, 230, 0.2);
}

/* Welcome Card */
.welcome-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    margin-bottom: 2rem;
}

.welcome-card h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.welcome-card p {
    font-size: 1.1rem;
    color: var(--gray-text);
    margin-bottom: 2rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: linear-gradient(135deg, var(--light-blue) 0%, rgba(232, 245, 255, 0.5) 100%);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    border: 2px solid rgba(120, 104, 230, 0.1);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--secondary-color);
}

.stat-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--gray-text);
}

/* Events Grid */
.events-grid, .tasks-container, .vendors-container, .guests-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.event-card, .task-card, .vendor-card, .guest-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
}

.event-card:hover, .task-card:hover, .vendor-card:hover, .guest-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(120, 104, 230, 0.15);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.card-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.card-actions {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
    color: var(--gray-text);
}

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

.edit-btn:hover {
    background: rgba(255, 193, 7, 0.1);
    color: var(--warning);
}

.delete-btn:hover {
    background: rgba(244, 67, 54, 0.1);
    color: var(--error);
}

.card-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--gray-text);
}

.info-item i {
    width: 16px;
    color: var(--primary-color);
}

/* Task Specific Styles */
.task-priority {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.priority-low {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success);
}

.priority-medium {
    background: rgba(255, 152, 0, 0.1);
    color: var(--warning);
}

.priority-high {
    background: rgba(244, 67, 54, 0.1);
    color: var(--error);
}

.task-status {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.status-pending {
    background: rgba(255, 152, 0, 0.1);
    color: var(--warning);
}

.status-in-progress {
    background: rgba(33, 150, 243, 0.1);
    color: #2196F3;
}

.status-completed {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success);
}

/* RSVP Status */
.rsvp-status {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.rsvp-yes {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success);
}

.rsvp-no {
    background: rgba(244, 67, 54, 0.1);
    color: var(--error);
}

.rsvp-pending {
    background: rgba(255, 152, 0, 0.1);
    color: var(--warning);
}

/* Filters */
.tasks-filters, .guests-filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-select {
    padding: 0.75rem;
    border: 2px solid var(--accent-color);
    border-radius: var(--border-radius);
    background: var(--white);
    color: var(--dark-text);
    cursor: pointer;
    transition: var(--transition);
    min-width: 200px;
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--gray-text);
    grid-column: 1 / -1;
}

.empty-state i {
    font-size: 4rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.empty-state p {
    font-size: 1.1rem;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease-in-out;
}

.modal-content {
    background: var(--white);
    padding: 0;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--accent-color);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.modal-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Form Styles */
.event-form, .task-form, .vendor-form, .guest-form {
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--accent-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(120, 104, 230, 0.1);
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    padding-top: 1rem;
    border-top: 1px solid var(--accent-color);
}

.cancel-btn, .save-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.cancel-btn {
    background: var(--accent-color);
    color: var(--gray-text);
}

.cancel-btn:hover {
    background: #d0d0d0;
}

.save-btn {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
}

.save-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(120, 104, 230, 0.3);
}

/* FAQ Styles */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    margin-bottom: 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--accent-color);
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: bold;
    transition: var(--transition);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.5rem 1.5rem;
    color: var(--gray-text);
    line-height: 1.6;
    animation: slideDown 0.3s ease-in-out;
}

.faq-answer[hidden] {
    display: none;
}

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

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 0.5rem;
    box-shadow: 0 -4px 15px rgba(120, 104, 230, 0.1);
    z-index: 100;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--gray-text);
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    min-width: 60px;
}

.nav-item i {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.nav-item span {
    font-size: 0.7rem;
    font-weight: 600;
}

.nav-item:hover,
.nav-item.active {
    color: var(--primary-color);
    background: rgba(120, 104, 230, 0.1);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--gray-text);
    font-size: 0.9rem;
    background: var(--white);
    margin-top: 3rem;
    border-top: 1px solid var(--accent-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-main {
        padding: 0.5rem;
    }
    
    .header-content {
        padding: 0 0.5rem;
    }
    
    #app-title {
        font-size: 1.2rem;
    }
    
    .section-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .section-header h2 {
        font-size: 1.5rem;
        text-align: center;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .events-grid, .tasks-container, .vendors-container, .guests-container {
        grid-template-columns: 1fr;
    }
    
    .tasks-filters, .guests-filters {
        flex-direction: column;
    }
    
    .filter-select {
        min-width: auto;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .modal-content {
        width: 95%;
        margin: 1rem;
    }
    
    .nav-item span {
        font-size: 0.6rem;
    }
    
    .welcome-card {
        padding: 1.5rem;
    }
    
    .welcome-card h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .card-header {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .card-actions {
        align-self: flex-end;
    }
    
    .nav-item {
        min-width: 50px;
    }
    
    .nav-item i {
        font-size: 1rem;
    }
    
    .nav-item span {
        font-size: 0.55rem;
    }
}

/* Print Styles */
@media print {
    .bottom-nav,
    .app-header,
    .add-button,
    .action-btn,
    .modal {
        display: none !important;
    }
    
    .app-main {
        padding: 0;
    }
    
    .app-section {
        display: block !important;
        page-break-inside: avoid;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #5a4fcf;
        --secondary-color: #9c97ff;
        --dark-text: #000000;
        --gray-text: #333333;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}