@import url(./theme.css);
@import url(./responsive.css);

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--light-color);
    color: var(--text-dark);
    line-height: 1.6;
}

/* Preloader Styles */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

#preloader.fade-out {
    opacity: 0;
    pointer-events: none;
}

.preloader-content {
    text-align: center;
    color: white;
}

.preloader-logo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    animation: breathing 2s infinite;
}

@keyframes breathing {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
    100% { transform: scale(1); opacity: 1; }
}

.gradient-text {
    background: linear-gradient(45deg, #ffffff, #e0e7ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.8rem;
    font-weight: 700;
    margin-top: 1rem;
}

.preloader-status {
    margin-top: 1rem;
    font-size: 1rem;
    opacity: 0.9;
}

/* Login Section */
.login-section {
    min-height: 100vh;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.login-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><polygon fill="%23ffffff08" points="0,1000 1000,0 1000,1000"/></svg>');
    background-size: cover;
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: var(--shadow-large);
    position: relative;
    z-index: 2;
}

.login-logo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
}

.login-header h2 {
    color: var(--text-dark);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.form-control {
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.15);
}

.input-group-text {
    background: var(--primary-color);
    color: white;
    border: 2px solid var(--primary-color);
    font-weight: 600;
}

.btn-primary {
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--border-radius);
    padding: 0.75rem 2rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    background: var(--gradient-primary);
}

/* Dashboard Navigation */
.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: white;
    border-bottom: 1px solid #e2e8f0;
    box-shadow: var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 100;
}

.left-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo img {
    width: 50px;
    height: 50px;
    border-radius: 12px;
}

.conference-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.dark-mode-toggle {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-dark);
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0.5rem;
    border-radius: 8px;
}

.dark-mode-toggle:hover {
    color: var(--primary-color);
    background: rgba(102, 126, 234, 0.1);
    transform: scale(1.1);
}

.signout {
    background: linear-gradient(135deg, #f56565, #e53e3e);
    border: none;
    color: white;
    font-weight: 600;
}

.signout:hover {
    background: linear-gradient(135deg, #e53e3e, #c53030);
    transform: translateY(-1px);
}

/* Layout */
.layout {
    display: flex;
    min-height: calc(100vh - 80px);
}

.sidebar {
    width: 280px;
    background: white;
    padding: 2rem;
    border-right: 1px solid #e2e8f0;
    box-shadow: var(--shadow-light);
}

.sidebar h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sidebar ul {
    list-style: none;
}

.sidebar ul li {
    margin-bottom: 0.5rem;
}

.sidebar ul li a {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--text-light);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.sidebar ul li a:hover {
    background-color: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    transform: translateX(5px);
}

.sidebar ul li a.active-menu {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-medium);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem;
    background: var(--light-color);
}

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

.header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
}

/* Sections */
.section {
    display: none;
}

.section.active {
    display: block;
}

/* Info Cards */
.info-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-light);
    border: 1px solid rgba(102, 126, 234, 0.1);
    transition: all 0.3s ease;
    height: 100%;
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.info-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--light-color);
    display: flex;
    align-items: center;
}

.info-card h3 i {
    color: var(--primary-color);
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid #f7fafc;
}

.info-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.info-item label {
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 0;
}

.info-item span {
    color: var(--text-dark);
    font-weight: 500;
}

/* Quick Actions */
.quick-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.quick-actions .btn {
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: all 0.3s ease;
}

.quick-actions .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* Badges */
.badge {
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 20px;
}

.bg-warning {
    background: linear-gradient(135deg, #ed8936, #dd6b20) !important;
}

.bg-success {
    background: linear-gradient(135deg, #48bb78, #38a169) !important;
}

.bg-danger {
    background: linear-gradient(135deg, #f56565, #e53e3e) !important;
}

/* Download Links */
.download-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.download-link {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: var(--light-color);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--text-dark);
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.download-link:hover {
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    transform: translateX(5px);
    border-color: var(--primary-color);
}

.download-link i {
    color: var(--primary-color);
    font-size: 1.25rem;
}

/* Contact Info */
.contact-info p {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.contact-info i {
    color: var(--primary-color);
    width: 20px;
}

/* Form Switches */
.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Announcements */
.announcement {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-light);
    border-left: 4px solid var(--primary-color);
}

.announcement h4, .announcement h5 {
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.announcement p {
    color: var(--text-light);
    margin-bottom: 0;
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(102, 126, 234, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite