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

body {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
header {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideDown 0.5s ease;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-icon {
    font-size: 32px;
    color: #667eea;
}

.logo-text {
    font-size: 24px;
    font-weight: bold;
    color: #4a5568;
}

.logo-subtext {
    font-size: 14px;
    color: #718096;
    margin-top: 2px;
}

nav {
    display: flex;
    gap: 15px;
}

.nav-btn {
    padding: 10px 20px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-btn:hover {
    background: #5a67d8;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.nav-btn i {
    font-size: 16px;
}

.hero {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
    text-align: center;
    animation: fadeIn 0.8s ease;
}

.hero h1 {
    color: #4a5568;
    font-size: 36px;
    margin-bottom: 15px;
}

.hero p {
    color: #718096;
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto 25px;
    line-height: 1.6;
}

.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.stat-card {
    background: #f7fafc;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    border-left: 4px solid #667eea;
}

.stat-number {
    font-size: 32px;
    font-weight: bold;
    color: #667eea;
    margin-bottom: 5px;
}

.stat-label {
    color: #718096;
    font-size: 14px;
}

.main-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
}

/* Announcements Section */
.announcements {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.section-title {
    color: #4a5568;
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 2px solid #667eea;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-title i {
    color: #667eea;
}

.announcements-list {
    max-height: 500px;
    overflow-y: auto;
    padding-right: 10px;
}

.announcement-card {
    background: #f7fafc;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    border-left: 4px solid #667eea;
    transition: transform 0.3s ease;
    cursor: pointer;
}

.announcement-card:hover {
    transform: translateX(5px);
}

.announcement-title {
    font-size: 18px;
    font-weight: 600;
    color: #2d3748;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.announcement-badge {
    background: #667eea;
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.announcement-content {
    color: #4a5568;
    line-height: 1.6;
    margin-bottom: 10px;
    max-height: 60px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
}

.announcement-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
    padding-top: 10px;
    border-top: 1px solid #e2e8f0;
}

.announcement-date {
    color: #718096;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.announcement-author {
    color: #4a5568;
    font-size: 14px;
    font-weight: 500;
}

/* Login Section */
.login-section {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 20px;
}

.form-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
    border-bottom: 1px solid #e2e8f0;
    padding-bottom: 15px;
}

.tab-btn {
    flex: 1;
    padding: 12px;
    background: #edf2f7;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    color: #4a5568;
    transition: all 0.3s ease;
}

.tab-btn.active {
    background: #667eea;
    color: white;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: #4a5568;
    margin-bottom: 8px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-group label i {
    color: #667eea;
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid #e2e8f0;
    border-radius: 5px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.password-wrapper {
    position: relative;
    width: 100%;
}

.password-wrapper .form-control {
    padding-right: 45px;
}

.toggle-password {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #4a556880;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 10;
    font-size: 16px;
    padding: 5px;
    user-select: none;
}

.toggle-password:hover {
    color: #667eea;
}

.btn {
    width: 100%;
    padding: 14px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn:hover {
    background: #5a67d8;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: #718096;
}

.btn-secondary:hover {
    background: #4a5568;
}

.alert {
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    display: none;
    animation: slideIn 0.3s ease;
}

.alert.success {
    background: #c6f6d5;
    color: #22543d;
    border: 1px solid #9ae6b4;
}

.alert.error {
    background: #fed7d7;
    color: #742a2a;
    border: 1px solid #fc8181;
}

.alert.info {
    background: #bee3f8;
    color: #2c5282;
    border: 1px solid #90cdf4;
}

.form-footer {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #e2e8f0;
    color: #718096;
    font-size: 14px;
}

.form-footer a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
}

.form-footer a:hover {
    text-decoration: underline;
}

/* Footer */
footer {
    margin-top: 50px;
    background: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    color: #718096;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
}

.footer-links a {
    color: #4a5568;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #667eea;
}

.copyright {
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .login-section {
        position: static;
    }
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    nav {
        flex-wrap: wrap;
        justify-content: center;
    }

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

    .hero {
        padding: 20px;
    }

    .hero h1 {
        font-size: 28px;
    }

    .hero p {
        font-size: 16px;
    }
}

/* Animations */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }

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

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: white;
    padding: 30px;
    border-radius: 10px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideDown 0.3s ease;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e2e8f0;
}

.modal-title {
    font-size: 20px;
    color: #4a5568;
}

.close-btn {
    background: none;
    border: none;
    font-size: 24px;
    color: #718096;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close-btn:hover {
    color: #4a5568;
}

.hidden {
    display: none;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #718096;
}

.loading-spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* UI Utilities */
.hidden {
    display: none !important;
}

.expandable-row i {
    transition: transform 0.2s;
}

.expandable-row.active i {
    transform: rotate(90deg);
}