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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background-color: #f8f9fa;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* Header Improvements */
        .header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            padding: 15px 20px;
            box-shadow: 0 2px 20px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 100;
            display: flex;
            flex-direction: column;
            
        }

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

        .logo {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }

        .logo-icon {
            width: 35px;
            height: 35px;
            background: rgba(255,255,255,0.2);
            backdrop-filter: blur(10px);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 10px;
            font-weight: bold;
            color: white;
            font-size: 18px;
            border: 1px solid rgba(255,255,255,0.3);
        }

        .logo-text {
            font-size: 24px;
            font-weight: 700;
            color: white;
        }

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

        .search-bar {
            position: relative;
            width: 300px;
        }

        .search-input {
            width: 100%;
            padding: 10px 15px 10px 40px;
            border: none;
            border-radius: 20px;
            font-size: 14px;
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(10px);
            color: white;
            border: 1px solid rgba(255,255,255,0.2);
        }

        .search-input::placeholder {
            color: rgba(255,255,255,0.7);
        }

        .search-icon {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255,255,255,0.7);
            font-size: 16px;
        }

        .notification-bell {
            position: relative;
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255,255,255,0.2);
            border-radius: 50%;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .notification-bell:hover {
            background: rgba(255,255,255,0.25);
        }

        .notification-dot {
            position: absolute;
            top: 8px;
            right: 8px;
            width: 8px;
            height: 8px;
            background: #ff4757;
            border-radius: 50%;
            border: 2px solid white;
        }

        /* Enhanced Post Cards */
        .tab-content {
            display: none;
            flex: 1;
            padding: 20px;
        }

        .tab-content.active {
            display: block;
        }

        .home-content {
            max-width: 600px;
            margin: 0 auto;
        }

        .post {
            background: white;
            border-radius: 16px;
            padding: 20px;
            margin-bottom: 20px;
            box-shadow: 0 2px 15px rgba(0,0,0,0.08);
            border: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .post:hover {
            box-shadow: 0 4px 25px rgba(0,0,0,0.12);
            transform: translateY(-2px);
        }

        .post-header {
            display: flex;
            align-items: center;
            margin-bottom: 16px;
        }

        .profile-pic {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            margin-right: 12px;
            object-fit: cover;
            border: 2px solid #f0f0f0;
        }

        .post-author {
            font-size: 16px;
            font-weight: 600;
            color: #2c3e50;
        }

        .post-time {
            font-size: 12px;
            color: #6c757d;
            margin-top: 2px;
        }

        .post-options {
            margin-left: auto;
            background: none;
            border: none;
            font-size: 18px;
            color: #6c757d;
            cursor: pointer;
            padding: 8px;
            border-radius: 50%;
            transition: background-color 0.3s ease;
        }

        .post-options:hover {
            background-color: #f8f9fa;
        }

        .post-content {
            font-size: 15px;
            color: #2c3e50;
            margin-bottom: 16px;
            line-height: 1.6;
        }

        .post-actions {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 12px;
            border-top: 1px solid #f0f0f0;
        }

        .action-group {
            display: flex;
            gap: 20px;
        }

        .action-btn {
            background: none;
            border: none;
            cursor: pointer;
            font-size: 16px;
            padding: 8px 12px;
            border-radius: 8px;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: #6c757d;
        }

        .action-btn:hover {
            background-color: #f8f9fa;
            color: #2c3e50;
        }

        .action-btn.liked {
            color: #e74c3c;
        }

        .apply-btn {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 20px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
        }

        .apply-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
        }

        /* Improved Career Tips */
        .career-tip {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 16px;
            padding: 25px;
            margin-bottom: 20px;
            color: white;
            position: relative;
            overflow: hidden;
        }

        .career-tip::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 100px;
            height: 100px;
            background: rgba(255,255,255,0.1);
            border-radius: 50%;
        }

        .tip-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            position: relative;
            z-index: 1;
        }

        .tip-description {
            font-size: 14px;
            opacity: 0.9;
            margin-bottom: 15px;
            position: relative;
            z-index: 1;
        }

        /* Enhanced Notifications */
        .notifications-content {
            max-width: 600px;
            margin: 0 auto;
        }

        .notification-item {
            background: white;
            border-radius: 16px;
            padding: 20px;
            margin-bottom: 16px;
            box-shadow: 0 2px 15px rgba(0,0,0,0.08);
            display: flex;
            align-items: center;
            transition: all 0.3s ease;
            cursor: pointer;
            border-left: 4px solid transparent;
            position: relative;
        }

        .notification-item:hover {
            transform: translateX(4px);
            box-shadow: 0 4px 20px rgba(0,0,0,0.12);
        }

        .notification-item.unread {
            border-left-color: #667eea;
            background: linear-gradient(135deg, #f8fbff, #ffffff);
        }

        .notification-item.unread::after {
            content: '';
            position: absolute;
            top: 20px;
            right: 20px;
            width: 8px;
            height: 8px;
            background: #667eea;
            border-radius: 50%;
        }

        .notification-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 16px;
            font-size: 20px;
            color: white;
        }

        .notification-icon.like {
            background: linear-gradient(45deg, #e74c3c, #c0392b);
        }

        .notification-icon.comment {
            background: linear-gradient(45deg, #f39c12, #e67e22);
        }

        .notification-icon.follow {
            background: linear-gradient(45deg, #667eea, #764ba2);
        }

        .notification-icon.achievement {
            background: linear-gradient(45deg, #f1c40f, #f39c12);
        }

        .notification-icon.job {
            background: linear-gradient(45deg, #9b59b6, #8e44ad);
        }

        .notification-content {
            flex: 1;
        }

        .notification-text {
            font-size: 15px;
            color: #2c3e50;
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .notification-time {
            font-size: 13px;
            color: #6c757d;
        }

        /* Enhanced Profile */
         .profile-content {
            max-width: 400px;
            margin: 0 auto;
            padding: 20px;
            text-align: center;
        }

        .profile-header {
            background: white;
            border-radius: 20px;
            padding: 40px 30px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
            margin-top: 20px;
            position: relative;
            overflow: hidden;
        }

        .profile-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(135deg, #667eea, #764ba2);
        }

        .profile-title {
            font-size: 28px;
            font-weight: 700;
            color: #2c3e50;
            margin-bottom: 30px;
            position: relative;
            z-index: 1;
        }

        .profile-avatar {
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
        }

        .avatar-img {
            width: 120px;
            height: 120px;
            border-radius: 50%;
            border: 4px solid white;
            object-fit: cover;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
        }
        .profile-name {
            font-size: 24px;
            font-weight: 700;
            color: #2c3e50;
            margin-bottom: 8px;
        }

        .profile-job {
            font-size: 18px;
            color: #6c757d;
            margin-bottom: 4px;
        }

        .profile-experience {
            font-size: 16px;
            color: #6c757d;
            margin-bottom: 30px;
        }
        .skill-score-section {
            margin: 30px 0;
            padding: 20px;
            background: #f8f9fa;
            border-radius: 12px;
        }

        .skill-score-title {
            font-size: 18px;
            font-weight: 700;
            color: #2c3e50;
            margin-bottom: 16px;
        }

        .progress-bar {
            width: 100%;
            height: 8px;
            background-color: #e9ecef;
            border-radius: 4px;
            overflow: hidden;
            position: relative;
        }

        .progress-fill {
            width: 75%;
            height: 100%;
            background: linear-gradient(90deg, #667eea, #764ba2);
            border-radius: 4px;
            transition: width 0.3s ease;
            position: relative;
        }

        .progress-fill::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
            animation: shimmer 2s infinite;
        }

        @keyframes shimmer {
            0% { transform: translateX(-100%); }
            100% { transform: translateX(100%); }
        } 
        .stats-container {
            display: flex;
            justify-content: space-around;
            margin-bottom: 30px;
        }

        .stat {
            text-align: center;
        }

        .stat-number {
            font-size: 28px;
            font-weight: 700;
            color: #2c3e50;
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: 16px;
            color: #6c757d;
        }

        .follow-btn {
            width: 100%;
            background: linear-gradient(135deg, #3498db, #2980b9);
            color: white;
            border: none;
            padding: 16px 32px;
            border-radius: 25px;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
        }

        .follow-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
        }

        .follow-btn.following {
            background: linear-gradient(135deg, #27ae60, #2ecc71);
        }
        /* Enhanced Career Grid */
        .career-content {
            max-width: 800px;
            margin: 0 auto;
            padding-top: 10px;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 20px;
        }

        .feature-card {
            background: white;
            border-radius: 16px;
            padding: 25px 20px;
            text-align: center;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
            cursor: pointer;
            border: 2px solid transparent;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(45deg, transparent, rgba(102, 126, 234, 0.1), transparent);
            transform: rotate(45deg);
            transition: all 0.3s ease;
            opacity: 0;
        }

        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 40px rgba(0,0,0,0.15);
            border-color: #667eea;
        }

        .feature-card:hover::before {
            opacity: 1;
            animation: sweep 0.6s ease;
        }

        @keyframes sweep {
            0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
            100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
        }

        .feature-icon {
            width: 60px;
            height: 60px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #2c3e50;
            background: linear-gradient(135deg, #f8f9fa, #e9ecef);
            border-radius: 50%;
            position: relative;
            z-index: 1;
        }

        .feature-title {
            font-size: 16px;
            font-weight: 600;
            color: #2c3e50;
            line-height: 1.3;
            position: relative;
            z-index: 1;
        }

        /* Enhanced Bottom Navigation */
        .bottom-nav {
            background: white;
            border-top: 1px solid #e9ecef;
            padding: 8px 0;
            display: flex;
            justify-content: space-around;
            align-items: center;
            position: sticky;
            bottom: 0;
            backdrop-filter: blur(10px);
            background: rgba(255, 255, 255, 0.95);
        }

        .nav-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-decoration: none;
            color: #6c757d;
            transition: all 0.3s ease;
            padding: 8px;
            border-radius: 12px;
            min-width: 60px;
            cursor: pointer;
            position: relative;
        }

        .nav-item.active {
            color: #667eea;
            background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
        }

        .nav-item.active::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 30px;
            height: 3px;
            background: linear-gradient(135deg, #667eea, #764ba2);
            border-radius: 2px;
        }

        .nav-icon {
            font-size: 22px;
            margin-bottom: 4px;
            transition: transform 0.3s ease;
        }

        .nav-item:hover .nav-icon {
            transform: scale(1.1);
        }

        .add-button {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, #667eea, #764ba2);
            border: none;
            border-radius: 50%;
            color: white;
            font-size: 24px;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .add-button::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            transform: translate(-50%, -50%);
            transition: all 0.3s ease;
        }

        .add-button:hover {
            transform: scale(1.1) rotate(90deg);
            box-shadow: 0 6px 25px rgba(102, 126, 234, 0.4);
        }

        .add-button:hover::before {
            width: 100%;
            height: 100%;
        }

        .add-button:active {
            transform: scale(0.95) rotate(90deg);
        }

        /* Loading States */
        .loading {
            opacity: 0.6;
            pointer-events: none;
        }

        .loading::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 20px;
            height: 20px;
            border: 2px solid #f3f3f3;
            border-top: 2px solid #667eea;
            border-radius: 50%;
            animation: spin 1s linear infinite;
            transform: translate(-50%, -50%);
        }

        @keyframes spin {
            0% { transform: translate(-50%, -50%) rotate(0deg); }
            100% { transform: translate(-50%, -50%) rotate(360deg); }
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 15px;
            }
            
            .search-bar {
                width: 100%;
                max-width: 300px;
            }
            
            .features-grid {
                grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
                gap: 16px;
            }
            
            .career-content, .home-content, .notifications-content {
                padding: 0 4px;
            }
        }

        @media (max-width: 480px) {
            .post {
                padding: 16px;
                margin-bottom: 16px;
            }
            
            .feature-card {
                padding: 20px 16px;
            }
            
            .feature-icon {
                width: 50px;
                height: 50px;
                font-size: 20px;
            }
            
            .nav-icon {
                font-size: 20px;
            }
        }

        /* Success states */
        .success-message {
            background: linear-gradient(135deg, #27ae60, #2ecc71);
            color: white;
            padding: 15px 20px;
            border-radius: 12px;
            margin: 20px 0;
            text-align: center;
            font-weight: 600;
            box-shadow: 0 4px 20px rgba(39, 174, 96, 0.3);
        }
/* Add Post Tab Styles */
.add-post-content {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
}

.create-post-container {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    margin-top: 20px;
}

.create-post-title {
    font-size: 24px;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 30px;
    text-align: center;
}

.post-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 16px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e9ecef;
}

.user-avatar .avatar-img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 2px solid #7cc7e8;
}

.user-details {
    flex: 1;
}

.user-name {
    font-size: 18px;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 4px;
}

.post-visibility {
    display: flex;
    align-items: center;
}

.visibility-select {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 6px 12px;
    font-size: 14px;
    color: #6c757d;
    cursor: pointer;
    outline: none;
}

.visibility-select:focus {
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.post-input-container {
    position: relative;
}

.post-textarea {
    width: 100%;
    min-height: 120px;
    padding: 20px;
    border: 2px solid #e9ecef;
    border-radius: 16px;
    font-size: 16px;
    font-family: inherit;
    resize: vertical;
    outline: none;
    transition: all 0.3s ease;
    background-color: #fafbfc;
}

.post-textarea:focus {
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
    background-color: white;
}

.post-textarea::placeholder {
    color: #9ca3af;
}

.char-count {
    position: absolute;
    bottom: 12px;
    right: 16px;
    font-size: 12px;
    color: #6c757d;
    background: white;
    padding: 4px 8px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.char-count.warning {
    color: #e67e22;
}

.char-count.danger {
    color: #e74c3c;
}

.post-options {
    padding: 16px 0;
    border-bottom: 1px solid #e9ecef;
}

.media-options {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.media-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 12px;
    font-size: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    outline: none;
}

.media-btn:hover {
    background: #e9ecef;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

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

.post-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding-top: 20px;
}

.cancel-btn {
    background: transparent;
    border: 2px solid #e9ecef;
    color: #6c757d;
    padding: 12px 24px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    flex: 1;
}

.cancel-btn:hover {
    border-color: #6c757d;
    color: #495057;
}

.post-btn {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    flex: 1;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.post-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

.post-btn:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.post-btn:active:not(:disabled) {
    transform: translateY(0);
}